Zoom lens system

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention pertains to a zoom lens system.
2. Description of the Related Art
Mainstream telephoto-type zoom lens systems that have been conventionally proposed have a four-component construction in which lens units are arranged such that their order in terms of refractive power is, from the object side, positive, negative, positive and positive, or positive, negative, positive and negative. However, a four-component zoom lens system generally has a large number of lenses, and when it is zoomed to the wide angle position, its total length becomes long.
SUMMARY OF THE INVENTION
The present invention was made in consideration of these points. Its object is to provide a compact zoom lens system which comprises a small number of lenses and has a short total system length.
Another object of the present invention is to provide a zoom lens system in which various aberrations are well compensated for despite its compact size.
These and other objects are attained by providing a lens system which comprises a master lens and a converter lens which is attachable at an object side of the master lens. The master lens and the converter lens have a plurality of lens unit which are movable on an optical axis during a zooming operation of the lens system.

BRIEF DESCRIPTION OF THE DRAWINGS
The above objects and features of the present invention are set forth with particularity in the appended claims. The present invention, both as to its organization and manner of operation, together with further objects and advantages thereof, may best be understood by reference to the following detailed description, taken in connection with the accompanying drawings.
FIG. 1 is a cross-sectional view of a first embodiment of the lens system.
FIG. 2a to 2i show aberration curves of the first embodiment of the lens system.
FIG. 3 is a cross-sectional view of a second embodiment of the lens system.
FIG. 4a to 4i show aberration curves of the second embodiment of the lens system.
FIG. 5 is a cross-sectional view of a third embodiment of the lens system.
FIG. 6a to 6i show aberration curves of the third embodiment of the lens system.
FIG. 7a to 7i show aberration curves of the third embodiment of the lens system at the closest focusing condition.
FIG. 8 is a cross-sectional view of a fourth embodiment of the lens system.
FIG. 9a to 9i show aberration curves of the fourth embodiment of the lens system.
FIG. 10 is a cross-sectional view of a fifth embodiment of the lens system.
FIG. 11a to 11i show aberration curves of the fifth embodiment of the lens system.
FIG. 12 is a cross-sectional view of a sixth embodiment of the lens system.
FIG. 13a to 13i show aberration curves of the sixth embodiment of the lens system.
FIG. 14 is a cross-sectional view of a seventh embodiment of the lens system.
FIG. 15a to 15i show aberration curves of the seventh embodiment of the lens system.
FIG. 16 is a cross-sectional view of a eighth embodiment of the lens system.
FIG. 17a to 17i show aberration curves of the eighth embodiment of the lens system.
FIG. 18 is a cross-sectional view of a ninth embodiment of the lens system.
FIG. 19a to 19i show aberration curves of the ninth embodiment of the lens system.
FIG. 20a to 20i show aberration curves of the ninth embodiment of the lens system at the closest focusing condition.
FIG. 21 is a cross-sectional view of a tenth embodiment of the lens system.
FIG. 22a to 22i show aberration curves of the tenth embodiment of the lens system.
FIG. 23 is a cross-sectional view of a eleventh embodiment of the lens system.
FIG. 24a to 24i show aberration curves of the eleventh embodiment of the lens system.
FIG. 25 is a cross-sectional view of a twelfth embodiment of the lens system.
FIG. 26a to 26i show aberration curves of the twelfth embodiment of the lens system.
FIG. 27a to 27i show aberration curves of the twelfth embodiment of the lens system at the closest focusing condition.
FIG. 28 is a cross-sectional view of a thirteenth embodiment of the lens system.
FIG. 29a to 29i show aberration curves of the thirteenth embodiment of the lens system.
FIG. 30 is a cross-sectional view of a fourteenth embodiment of the lens system.
FIG. 31a to 31i show aberration curves of the fourteenth embodiment of the lens system.
FIG. 32 is a cross-sectional view of a fifteenth embodiment of the lens system.
FIG. 33a to 33i show aberration curves of the fifteenth embodiment of the lens system.
FIG. 34 is a cross-sectional view of a sixteenth embodiment of the lens system.
FIG. 35a to 35i show aberration curves of the sixteenth embodiment of the lens system.
FIG. 36 is a cross-sectional view of a seventeenth embodiment of the lens system.
FIG. 37a to 37i show aberration curves of the seventeenth embodiment of the lens system.
FIG. 38 is a cross-sectional view of a eighteenth embodiment of the lens system.
FIG. 39a to 39i show aberration curves of the eighteenth embodiment of the lens system.
FIG. 40 is a cross-sectional view of a nineteenth embodiment of the lens system.
FIG. 41a to 41i show aberration curves of the nineteenth embodiment of the lens system.
FIG. 42a to 42i show aberration curves of the nineteenth embodiment of the lens system at the closest focusing condition.
FIG. 43 is a cross-sectional view of a twentieth embodiment of the lens system.
FIG. 44a to 44i show aberration curves of the twentieth embodiment of the lens system.
FIG. 45a to 45i show aberration curves of the twentieth embodiment of the lens system at the closest focusing condition.
FIG. 46 is a cross-sectional view of a twenty-first embodiment of the lens system.
FIG. 47a to 47i show aberration curves of the twenty-first embodiment of the lens system.
FIG. 48 is a cross-sectional view of a twenty-second embodiment of the lens system.
FIG. 49a to 49i show aberration curves of the twenty-second embodiment of the lens system.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Embodiments of the present invention are explained below.
The embodiments have a three-component construction: they basically comprise, from the object side, a first lens unit having a positive refractive power, a second lens unit having a positive refractive power and a third lens unit having a negative refractive power. During zooming, the sizes of the first area of empty space between the first lens unit and the second lens unit and the second area of empty space between the second lens unit and the third lens unit change.
The zoom lens systems of the embodiments meet the following conditions in addition to having the basic construction described above. It is not necessary, however, to meet all of the conditions simultaneously.
(1)BFL.sub.W <DL/2
E.sub.12W /E.sub.23T <20 (2)
0.5<f.sub.1 /f.sub.W <3.0 (3)
0.1<f.sub.1 /f.sub.2 <10 (4)
0.1<f.sub.12W /f.sub.W <5 (5)
1.6<.beta..sub.3W <3.0 (6)
0.1<.phi..sub.1-1 /.phi.W<5.0 (7)
-5.0<.phi..sub.2-1 /.phi..sub.W <-0.01 (8)
6<T.sub.1 <12 (9)
wherein:
BFL.sub.W : a back focal length of the zoom lens system in the shortest focal length condition,
DL : a diagonal length of an image frame,
E.sub.12W : a length of the first area of empty space in the shortest focal length condition,
E.sub.23T : a length of the second area of empty space in the longest focal length condition,
f.sub.1 : a focal length of the first lens unit,
f.sub.2 : a focal length of the second lens unit,
f.sub.W : a focal length of the zoom lens system in the shortest focal length condition,
f.sub.12W : a composite focal length with the first and second lens units in the shortest focal length condition,
.beta..sub.3W : a lateral magnification of the third lens unit in the shortest focal length condition,
.phi..sub.W : a refractive power of the zoom lens system in the shortest focal length condition,
.phi..sub.1-1 : a refractive power of a lens surface of the fist lens unit that is closest to the object side,
.phi..sub.2-1 : a refractive power of a lens surface of the second lens unit that is closest to the object side, and
T.sub.1 : an axial distance of the first lens unit.
Condition (1) governs the back focal length of the zoom lens system in the shortest focal length condition.
Most conventional zoom lens systems that have a refractive power arrangement of positive, positive and negative from the object side have a short back focal length. Their back focal length in the wide angle range is particularly short. A zoom lens system with a short back focal length is best suited for devices whose distance from the last lens surface to the image plane is short, such as compact cameras, but it is not suitable for devices in which a mirror is used between the last lens surface and the image plane, such as single lens reflex cameras.
With this in mind, in the embodiments pertaining to the present invention, an adequate back focal length in the wide angle range can be obtained by meeting condition (1), and they can therefore be used in devices that require a long back focal length, such as single lens reflex cameras.
Condition (2) governs the ratio of the length of the first area of empty space in the shortest focal length condition to the second area of empty space in the longest focal length condition. If the lower limit of condition (2) is exceeded with the first area of empty space in the wide angle range becoming small, the point in the second lens unit at which the light beam enters said lens unit rises relative to the center point of the lens. Consequently, it becomes difficult to compensate for the negative axial chromatic aberration that occurs in the second lens unit. If the lower limit of condition (2) is exceeded by the second area of empty space in the telephoto range becoming small, the point in the third lens unit at which the light beam enters said lens unit rises relative to the center point of the lens. Consequently, it becomes difficult to compensate for the positive axial chromatic aberration that occurs in the third lens unit, and at the same time the spherical aberration tends to worsen. On the other hand, if the upper limit of condition (2) is exceeded with the second area of empty space in the telephoto range becoming large or with the first area of empty space in the wide angle range becoming large, the total length of the zoom lens system increases, and at the same time the second area of empty space in the wide angle range also increases, which makes it difficult to obtain an adequate back focal length.
It is effective to set the lower limit of condition (2) at around 6 in order to better compensate for the axial chromatic aberration.
Condition (3) governs the ratio of the focal length of the first lens unit to the focal length of the zoom lens system in the shortest focal length condition. If the lower limit of condition (3) is exceeded, the refractive power of the first lens unit becomes too strong, and as a result it becomes difficult to obtain an adequate back focal length in the wide angle range, as well as to compensate for the positive lateral chromatic aberration in the telephoto range. On the other hand, if the upper limit of condition (3) is exceeded, the refractive power of the first lens unit becomes too weak, and as a result it becomes difficult to compensate for the negative axial chromatic aberration in the wide angle range and the positive axial chromatic aberration in the telephoto range. Further, since the amount of movement of the first lens unit during zooming increases, a lens system that exceeds the upper limit of condition (3) is unsuitable in achieving a compact lens mount.
Condition (4) governs the ratio of the focal length of the first lens unit to the focal length of the second lens unit. If the lower limit of condition (4) is exceeded, the refractive power of the first lens unit becomes too strong, and as a result it becomes difficult to compensate for the spherical aberration in the telephoto range. On the other hand, if the upper limit of condition (4) is exceeded, the refractive power of the second lens unit becomes too strong, and as a result it becomes difficult to compensate for the distortion and off-axial coma in the wide angle range. In addition, the refractive power of the first lens unit becomes too weak and the amount of movement of the first lens unit during zooming increases, and as a result it becomes difficult to achieve a compact lens mount.
It is effective to set the upper limit of condition (4) at around 2.2 in order to better compensate for the aberrations in the wide angle range and achieve a more compact lens mount.
Condition (5) governs the ratio of the composite focal length of the first and second lens units in the shortest focal length condition to the focal length of the zoom lens system in the shortest focal length condition. If the lower limit of condition (5) is exceeded, the refractive powers of the first and second lens units both become too strong, and as a result it becomes difficult to compensate for the spherical aberration in the telephoto range and the off-axial aberrations in the wide angle range. If the upper limit of condition (5) is exceeded, the refractive powers of the first and second lens units both become too weak, and as a result the compactness of the zoom lens system is lost.
Condition (6) governs the lateral magnification of the third lens unit in the shortest focal length condition. If the lower limit of condition (6) is exceeded, the refractive power of the third lens unit becomes too strong, and as a result it becomes difficult to compensate for aberrations--the curvature of field and coma, in particular--in the third lens unit. On the other hand, if the upper limit of condition (6) is exceeded, the refractive power of the third lens unit becomes too weak, and as a result the compactness of the zoom lens system is lost.
Condition (7) governs the ratio of the refractive power of the lens surface of the first lens unit that is closest to the object to the refractive power of the entire zoom lens system in the shortest focal length condition.
Generally, in a telephoto-type zoom lens system, the point in the first lens unit at which the beam of light passes through said lens unit becomes highest in the telephoto range. Where the light beam passes through a lens unit at a point that is high relative to the center of the lens unit, compensation for aberrations is difficult. Therefore, in order to obtain good performance in terms of compensation for aberrations in the telephoto range, it is preferred that the point in the first lens unit at which the light beam passes through said lens unit be as low as possible. This construction can be realized by having the lens surface of the first lens unit that is closest to the object (the first surface) be convex on the object side such that it has a positive refractive power. Condition (7) is a condition to set the refractive power of this first surface to an appropriate level.
If the lower limit of condition (7) is exceeded, the refractive power of the first surface becomes too weak, and as a result the first lens unit becomes large, making it difficult to achieve a compact zoom lens system. In addition, it becomes necessary to enhance the refractive powers of other positive surfaces in the first lens unit, which makes it difficult to compensate for spherical aberrations and comas in the telephoto range in particular. On the other hand, if the upper limit of condition (7) is exceeded, the refractive power of the first surface becomes too strong, which gives rise to the occurrence of large spherical and comas in the telephoto range, compensation for which is difficult.
Condition (8) governs the ratio of the refractive power of the lens surface of the second lens unit that is closest to the object to the refractive power of the entire zoom lens system in the shortest focal length condition.
Where the first lens unit has a positive refractive power and the third lens unit has a negative refractive power, a positive distortion easily occurs. It is preferred to give the surface of the second lens unit that is closest to the object (the second surface) a strong refractive power in order to compensate for said distortion. However, if the second surface is made to have a strong positive refractive power, a large coma easily occurs from the second surface. This phenomenon occurs because the light beam projected from the first lens unit enters the second lens unit from a wide angle when a relatively strong refractive power is given to the first lens unit in order to achieve a compact zoom lens system. Therefore, it is preferred to give a negative refractive power to the second surface. By giving a strong negative refractive power to the second surface, the rear principal point of the second lens unit becomes positioned on the image side. Therefore, it becomes possible to reduce the first area of empty space, which also contributes to making the zoom lens system compact. Condition (8) is a condition to set the refractive power of this second surface to an appropriate level.
If the lower limit of condition (8) is exceeded, the refractive power of the second surface becomes too strong, and as a result overcompensation of the distortion in the minus direction easily takes place. In addition, it becomes necessary to use a surface having a strong positive refractive power within the second lens unit in order to have the second lens unit have a positive refractive power, which allows for easy occurrence of a coma. On the other hand, if the upper limit of condition (8) is exceeded, the refractive power of the first surface becomes too weak, which makes it difficult to compensate for distortion, in addition to making it difficult to achieve a compact zoom lens system.
It is effective to set the lower limit of condition (8) at around -3.0 in order to better compensate for said distortion.
Condition (9) governs the axial distance of the first lens unit. If the lower limit of condition (9) is exceeded, it becomes difficult to obtain a proper edge surface for the lens(es) of the first lens unit having a positive refractive power. If the upper limit of condition (9) is exceeded, the length of the first lens unit becomes too long, which makes it difficult to achieve a compact zoom lens system.
In addition, it is preferred to use aspherical surfaces in the zoom lens systems of the embodiments. Naturally, however, aspherical surfaces need not necessarily be used.
Where an aspherical surface is used in the first lens unit, the following effect is achieved. In other words, in order to make the zoom lens system compact and reduce the amount of movement of the first lens unit during zooming from the position in the shortest focal length condition to the position in the longest focal length condition, it is necessary to make the refractive power of the first lens unit strong. Where the refractive power of the first lens unit is made strong, however, a spherical aberration (spherical aberration in the telephoto range, in particular) easily occurs. The aspherical surface in the first lens unit is effective in compensating for this spherical aberration.
Furthermore, where the surface of the first lens unit that is closest to the object is given a negative refractive power so that an adequate back focal length may be obtained in the wide angle range, if the negative refractive power given to this surface is strong, a positive spherical aberration and a positive axial chromatic aberration easily occur. Therefore, if this surface is made aspherical, which weakens the negative refractive power, these aberrations are kept small while an adequate back focal length in the wide angle range can be effectively obtained.
Where an aspherical surface is used in the second lens unit, the following effect is achieved. In other words, in order to make the zoom lens system compact, it is necessary to make the refractive power of the second lens unit strong. Where the refractive power of the second lens unit is made strong, however, an off-axial coma easily occurs in the wide angle range. The aspherical surface in the second lens unit is effective to compensate for this off-axial coma.
Furthermore, if it is attempted to construct the second lens unit using a small number of lenses, it becomes necessary to give the surface of the second lens unit that is closest to the image a strong positive refractive power, and as a result the spherical aberration coefficient easily becomes a large positive value. Therefore, if a negative surface having a relatively weak refractive power is made aspherical, a large negative value can be obtained using this aspherical surface, which is effective in offsetting said spherical aberration in the second lens unit.
Where an aspherical surface is used in the third lens unit, the following effect is achieved. In other words, if the refractive powers of the first and second lens units are made strong in order to make the zoom lens system compact, it inevitably also becomes necessary to increase the refractive power of the third lens unit. If the refractive power of the third lens unit is increased, however, the refractive powers of negative surfaces become strong, which easily gives rise to a negative curvature of field. This inclination is particularly marked in zoom lens systems having a long back focal length. The aspherical surface in the third lens unit is effective in compensating for this curvature of field.
Furthermore, if it is attempted to construct the third lens unit using a small number of lenses, it becomes necessary to use a surface having a strong negative refractive power in the third lens unit, and as a result the spherical aberration coefficient easily becomes a large negative value. Therefore, a large positive spherical aberration coefficient can be obtained by using an aspherical surface in the third lens unit, which effectively offsets the spherical aberration in the third lens unit.
By using three or more aspherical surfaces in the entire zoom lens system, it becomes possible to significantly reduce the number of lenses that comprise each lens unit. For example, it is possible to construct each lens unit with two lenses. In this case, it is effective to use an aspherical surface in the second and third lens units.
In addition, it is preferred that the first and third lens units be moved together during zooming. By moving the first and third lens units together during zooming, the lens mount construction--the cam construction for zooming, in particular--can be simplified.
The aperture is preferably positioned between the first lens unit and the second lens unit, or between the second lens unit and the third lens unit. Where the aperture is positioned between the first lens unit and the second lens unit, it becomes possible to cut off-axial lower light rays in the wide angle range in particular, so that the performance is improved, and at the same time it becomes possible to reduce the lens diameter of the first lens unit. Where the aperture is positioned between the second lens unit and the third lens unit, the matching between the aperture and off-axial light rays improves so that it becomes possible to secure a good illumination curve with regard to the image height even when the aperture is made small. The aperture may be moved together with the second lens unit or independently of the second lens unit during zooming.
Focusing is preferably performed using the second lens unit. The effect of focusing using the second lens unit is explained below using aberration coefficients. Table 1 shows the aberration coefficients in Embodiment 3, which is described below, where focusing is performed using the first lens unit, the second lens unit and the third lens unit.
TABLE 1______________________________________ Infinity Nearest Focusing Focusing Unit 1 Unit 2 Unit 3______________________________________Spherical Wide 3.1 6.5 3.6 3.3Aberration Tele 81 130 85 32Coma Wide 0.7 -1.3 0.5 0.2 Tele 0.1 -13 -0.7 -0.5Astigmatism Wide 0.4 0.1 0.1 0.1 Tele 0.1 3.0 -0.2 0.1______________________________________
The following can be seen from Table 1. First, where focusing is performed using the first lens unit, compensation for the spherical aberration, coma and astigmatism tends to be insufficient. Where focusing is performed using the third lens unit, the fluctuation in spherical aberration tends to be large between infinity focusing and closest range focusing. Where focusing is performed using the second lens unit, all aberrations are well compensated for and no significant fluctuation in any aberration is seen between infinity focusing and closest range focusing.
Further, since the refractive power of the first lens unit is not very strong, where focusing is performed using the first lens unit, the lens unit must be moved over a great distance to perform focusing. Where focusing is performed using the third lens unit, the third lens unit moves toward the image during focusing, which shortens the back focal length. This is therefore not suited for devices such as single reflex cameras, in particular, which require a long back focal length. Where focusing is performed using the second lens unit, there is little disadvantage arising in connection with the lens unit's movement for focusing. Therefore, it is preferred that focusing be performed using the second lens unit.
Specific numerical data for each embodiment is shown below. The specific construction of each embodiment is as shown in FIGS. 1 through 22 and Tables 2 through 23. In each table, ri (i=1, 2, 3, . . . ) represents the radius of curvature of the ith lens surface from the object side; di (i=1, 2, 3, . . . ) represents the ith axial distance from the object side; and Ni (i=1, 2, 3, . . . ) and .nu.vi (i=1, 2, 3, . . . ) represent the refractive index (.nu.d) and the Abbe number (.nu.d) with regard to the d-line of the ith lens from the object side, respectively. Values of focal length f and f-number fNo of the zoom lens system in the shortest focal length condition, the middle focal length condition and the longest focal length condition are also shown in the tables.
In the embodiments, the surfaces marked with asterisks in the radius of curvature column are aspherical. The configuration of an aspherical surface is defined by the following equation. ##EQU1## wherein: X : an amount of displacement from the reference surface along the optical axis,
Y : a height in a direction perpendicular to the optical axis,
C : a paraxial curvature,
.epsilon.: a conic constant, and
Ai : an ith aspherical coefficient.
TABLE 2A__________________________________________________________________________Lens Construction of First Embodimentf = 102.0 .about. 140.0 .about. 195.0fNo. = 4.6 .about. 5.8 .about. 5.8Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________ r1 -169.365 d1 2.000 N1 1.74000 .nu.1 28.26 r2 -1306.472 d2 0.971 r3 45.676 d3 5.000 N2 1.48749 .nu.2 70.44 r4 -1437.442 d4 14.039 .about. 24.553 .about. 33.196* r5 28.504 d5 5.000 N3 1.71736 .nu.3 29.42* r6 21.194 d6 4.934 r7 -113.038 d7 9.798 N4 1.48749 .nu.4 70.44 r8 -22.848 d8 1.000 .about. 1.000 .about. 1.000 r9 Stop d9 22.688 .about. 12.138 .about. 3.200* r10 -32.993 d10 3.000 N5 1.75520 .nu.5 27.51* r11 -24.878 d11 2.500 r12 -23.411 d12 1.000 N6 1.72000 .nu.6 50.31 r13 -131.625__________________________________________________________________________ .SIGMA.d = 71.930 .about. 71.894 .about. 71.599
TABLE 2B______________________________________Aspherical Coefficient of First Embodiment______________________________________r5: r10:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.26445 .times. 10.sup.-4 A3 = -0.81495 .times. 10.sup.-4A6 = -0.10097 .times. 10.sup.-6 A4 = 0.27205 .times. 10.sup.-4A8 = 0.35240 .times. 10.sup.-9 A5 = -0.28129 .times. 10.sup.-5A10 = -0.41137 .times. 10.sup.-11 A6 = 0.13213 .times. 10.sup.-6A12 = 0.12761 .times. 10.sup.-13 A7 = -0.62289 .times. 10.sup.-10r6: A8 = -0.62048 .times. 10.sup.-9.epsilon. = 0.10000 .times. 10 A9 = -0.16606 .times. 10.sup.-11A4 = -0.27677 .times. 10.sup.-4 A10 = -0.15232 .times. 10.sup.-11A6 = -0.12567 .times. 10.sup.-6 A11 = 0.77273 .times. 10.sup.-14A8 = 0.28046 .times. 10.sup.-9 A12 = 0.98806 .times. 10.sup.-14A10 = -0.48853 .times. 10.sup.-11 A13 = 0.14722 .times. 10.sup.-18A12 = 0.22406 .times. 10.sup.-13 A14 = 0.78203 .times. 10.sup.-19A14 = 0.80357 .times. 10.sup.-19 A15 = 0.61697 .times. 10.sup.-20A16 = 0.17989 .times. 10.sup.-20 A16 = 0.35458 .times. 10.sup.-21 r11: .epsilon. = 0.100 .times. 10 A3 = -0.732 .times. 10.sup.-4 A4 = 0.167 .times. 10.sup.-4 A5 = -0.990 .times. 10.sup.-6 A6 = -0.153 .times. 10.sup.-7 A7 = 0.481 .times. 10.sup.-9 A8 = -0.233 .times. 10.sup.-9 A9 = -0.173 .times. 10.sup.-10 A10 = 0.743 .times. 10.sup.-12 A11 = 0.299 .times. 10.sup.-13 A12 = -0.586 .times. 10.sup.-16 A13 = -0.383 .times. 10.sup.-18______________________________________
TABLE 3A__________________________________________________________________________Lens Construction of Second Embodimentf = 102.0 .about. 140.0 .about. 195.0fNo. = 4.6 .about. 5.8 .about. 5.8Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________* r1 -34.837 d1 2.000 N1 1.74000 .nu.1 28.26 r2 -43.462 d2 0.971 r3 54.296 d3 5.000 N2 1.48749 .nu.2 70.44 r4 -263.350 d4 13.910 .about. 26.089 .about. 35.789* r5 27.536 d5 5.000 N3 1.71736 .nu.3 29.42* r6 20.556 d6 4.934 r7 -494.824 d7 9.798 N4 1.48749 .nu.4 70.44 r8 -26.145 d8 1.000 .about. 1.000 .about. 1.000 r9 Stop d9 22.457 .about. 12.083 .about. 3.200* r10 -26.328 d10 3.000 N5 1.84666 .nu.5 23.82* r11 -25.666 d11 2.500 r12 -28.697 d12 1.000 N6 1.61800 .nu.6 63.39 r13 -220.191__________________________________________________________________________ .SIGMA.d = 71.570 .about. 73.375 .about. 74.192
TABLE 3B______________________________________Aspherical Coefficient of Second Embodiment______________________________________r1: r10:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = 0.13697 .times. 10.sup.-5 A3 = -0.86906 .times. 10.sup.-4A6 = -0.83104 .times. 10.sup.-10 A4 = 0.25404 .times. 10.sup.-4A8 = 0.15066 .times. 10.sup.-11 A5 = -0.28828 .times. 10.sup.-5r5: A6 = 0.13116 .times. 10.sup.-6.epsilon. = 0.10000 .times. 10 A7 = 0.11429 .times. 10.sup.-8A4 = -0.27994 .times. 10.sup.-4 A8 = -0.43197 .times. 10.sup.-9A6 = -0.96492 .times. 10.sup.-7 A9 = -0.16606 .times. 10.sup.-11A8 = 0.43136 .times. 10.sup.-9 A10 = 0.32991 .times. 10.sup.-12A10 = -0.30280 .times. 10.sup.-11 A11 = 0.77273 .times. 10.sup.-14A12 = 0.70736 .times. 10.sup.-14 A12 = 0.45988 .times. 10.sup.-14r6: A13 = 0.14722 .times. 10.sup.-18.epsilon. = 0.10000 .times. 10 A14 = 0.78203 .times. 10.sup.-19A4 = -0.33938 .times. 10.sup.-4 A15 = 0.61697 .times. 10.sup.-20A6 = -0.12393 .times. 10.sup.-6 A16 = 0.35458 .times. 10.sup.-21A8 = 0.43751 .times. 10.sup.-9 r11:A10 = -0.36780 .times. 10.sup.-11 .epsilon. = 0.10000 .times. 10A12 = 0.11085 .times. 10.sup.-13 A3 = -0.65190 .times. 10.sup.-4A14 = 0.80357 .times. 10.sup.-19 A4 = 0.13693 .times. 10.sup.-4A16 = 0.17989 .times. 10.sup.-20 A5 = -0.10867 .times. 10.sup.-5 A6 = -0.12995 .times. 10.sup.-7 A7 = 0.77090 .times. 10.sup.-9 A8 = 0.15613 .times. 10.sup.-9 A9 = -0.82346 .times. 10.sup.-11 A10 = -0.16902 .times. 10.sup.-12 A11 = 0.29893 .times. 10.sup.-13 A12 = 0.35220 .times. 10.sup.-15 A13 = -0.38277 .times. 10.sup.-18______________________________________
TABLF 4A__________________________________________________________________________Lens Construction of Third Embodimentf = 102.0 .about. 140.0 .about. 195.0fNo. =4.6 .about. 5.8 .about. 5.8Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________ r1 -180.196 d1 2.000 N1 1.74000 .nu.1 28.26 r2 -2424.653 d2 0.971 r3 45.563 d3 5.000 N2 1.48749 .nu.2 70.44 r4 -1544.616 d4 14.038 .about. 24.559 .about. 33.206* r5 28.165 d5 5.000 N3 1.71736 .nu.3 29.42* r6 20.971 d6 4.934 r7 -111.559 d7 9.779 N4 1.48749 .nu.4 70.44 r8 -22.776 d8 1.000 .about. 1.000 .about. 1.000 r9 Stop d9 22.685 .about. 12.137 .about. 3.200* r10 -32.151 d10 3.000 N5 1.75520 .nu.5 27.51* r11 -24.537 d11 2.500 r12 -23.781 d12 1.000 N6 1.72000 .nu.6 50.31 r13 -139.601__________________________________________________________________________.SIGMA.d = 71.907 .about. 71.88 .about. 71.59 Closest Focusing (D = 1.5 m) d4 10.556 .about. 20.502 .about. 28.512 d8 4.482 .about. 5.057 .about. 5.694 d9 22.685 .about. 12.137 .about. 3.200
TABLE 4B______________________________________Aspherical Coefficient of Third Embodiment______________________________________r5: r10:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.26619 .times. 10.sup.-4 A3 = -0.80386 .times. 10.sup.-4A6 = -0.10232 .times. 10.sup.-6 A4 = 0.26488 .times. 10.sup.-4A8 = 0.33201 .times. 10.sup.-9 A5 = -0.28564 .times. 10.sup.-5A10 = -0.39994 .times. 10.sup.-11 A6 = 0.13032 .times. 10.sup.-6A12 = 0.12569 .times. 10.sup.-13 A7 = -0.15229 .times. 10.sup.-9r6: A8 = -0.63617 .times. 10.sup.-9.epsilon. = 0.10000 .times. 10 A9 = -0.16606 .times. 10.sup.-11A4 = -0.27935 .times. 10.sup.-4 A10 = -0.18394 .times. 10.sup.-11A6 = -0.13216 .times. 10.sup.-6 A11 = 0.77273 .times. 10.sup.-14A8 = 0.29134 .times. 10.sup.-9 A12 = 0.11590 .times. 10.sup.-13A10 = -0.49551 .times. 10.sup.-11 A13 = 0.14722 .times. 10.sup.-18A12 = 0.22885 .times. 10.sup.-13 A14 = 0.78203 .times. 10.sup.-19A14 = 0.80357 .times. 10.sup.-19 A15 = 0.61697 .times. 10.sup.-20A16 = 0.17989 .times. 10.sup.-20 A16 = 0.35458 .times. 10.sup.-21 r11: .epsilon. = 0.10000 .times. 10 A3 = -0.72161 .times. 10.sup.-4 A4 = 0.16403 .times. 10.sup.-4 A5 = -0.10134 .times. 10.sup.-5 A6 = -0.16807 .times. 10.sup.-7 A7 = 0.42257 .times. 10.sup.-9 A8 = -0.32178 .times. 10.sup.-9 A9 = -0.81465 .times. 10.sup.-12 A10 = -0.45572 .times. 10.sup.-12 A11 = 0.29893 .times. 10.sup.-13 A12 = 0.22254 .times. 10.sup.-14 A13 = -0.38277 .times. 10.sup.-18______________________________________
TABLE 5A__________________________________________________________________________Lens Construction of Fourth Embodimentf = 102.0 .about. 140.0 .about. 195.0fNo. = 4.6 .about. 5.8 .about. 5.8Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________ r1 -169.365 d1 2.000 N1 1.74000 .nu.1 28.26 r2 -1306.472 d2 0.971 r3 45.676 d3 5.000 N2 1.48749 .nu.2 70.44 r4 -1437.442 d4 13.039 .about. 23.553 .about. 32.196 r5 Stop d5 1.000* r6 28.504 d6 5.000 N3 1.71736 .nu.3 29.42* r7 21.194 d7 4.934 r8 -113.038 d8 9.798 N4 1.48749 .nu.4 70.44 r9 -22.848 d9 23.688 .about. 13.138 .about. 4.200* r10 -32.993 d10 3.000 N5 1.75520 .nu.5 27.51* r11 -24.878 d11 2.500 r12 -23.411 d12 1.000 N6 1.72000 .nu.6 50.31 r13 -131.625__________________________________________________________________________ .SIGMA.d = 71.930 .about. 71.894 .about. 71.599
TABLE 5B______________________________________Aspherical Coefficient of Fourth Embodiment______________________________________r6: r10:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.26445 .times. 10.sup.-4 A3 = -0.81495 .times. 10.sup.-4A6 = -0.10097 .times. 10.sup.-6 A4 = 0.27205 .times. 10.sup.-4A8 = 0.35240 .times. 10.sup.-9 A5 = -0.28129 .times. 10.sup.-5A10 = -0.41137 .times. 10.sup.-11 A6 = 0.13213 .times. 10.sup.-6A12 = 0.12761 .times. 10.sup.-13 A7 = -0.62289 .times. 10.sup.-10r7: A8 = -0.62048 .times. 10.sup.-9.epsilon. = 0.10000 .times. 10 A9 = -0.16606 .times. 10.sup.-11A4 = -0.27677 .times. 10.sup.-4 A10 = -0.15232 .times. 10.sup.-11A6 = -0.12567 .times. 10.sup.-6 A11 = 0.77273 .times. 10.sup.-14A8 = 0.28046 .times. 10.sup.-9 A12 = 0.98806 .times. 10.sup.-14A10 = -0.48853 .times. 10.sup.-11 A13 = 0.14722 .times. 10.sup.-18A12 = 0.22406 .times. 10.sup.-13 A14 = 0.78203 .times. 10.sup.-19A14 = 0.80357 .times. 10.sup.-19 A15 = 0.61697 .times. 10.sup.-20A16 = 0.17989 .times. 10.sup.-20 A16 = 0.35458 .times. 10.sup.-21 r11: .epsilon. = 0.10000 .times. 10 A3 = -0.73220 .times. 10.sup.-4 A4 = 0.16653 .times. 10.sup.-4 A5 = -0.98986 .times. 10.sup.-6 A6 = -0.15299 .times. 10.sup.-7 A7 = 0.48059 .times. 10.sup.-9 A8 = -0.23320 .times. 10.sup.-9 A9 = -0.17321 .times. 10.sup.-10 A10 = 0.74297 .times. 10.sup.-12 A11 = 0.29893 .times. 10.sup.-13 A12 = -0.58614 .times. 10.sup.-16 A13 = -0.38277 .times. 10.sup.-18______________________________________
TABLE 6A__________________________________________________________________________Lens Construction of Fifth Embodimentf = 102.0 .about. 140.0 .about. 195.0fNo. = 4.6 .about. 5.8 .about. 5.8Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________ r1 -399.243 d1 2.000 N1 1.74000 .nu.1 28.26 r2 380.981 d2 0.830 r3 44.781 d3 5.000 N2 1.48749 .nu.2 70.44 r4 -3060.443 d4 13.990 .about. 24.891 .about. 33.709* r5 29.970 d5 5.000 N3 1.71736 .nu.3 29.42* r6 20.178 d6 4.934 r7 -122.681 d7 10.345 N4 1.48749 .nu.4 70.44 r8 -22.846 d8 1.000 .about. 1.000 .about. 1.000 r9 Stop d9 22.508 .about. 12.074 .about. 3.200 r10 -32.592 d10 3.000 N5 1.75520 .nu.5 27.51 r11 -24.059 d11 1.571 r12 -25.050 d12 1.000 N6 1.72000 .nu.6 50.31 r13 -249.468__________________________________________________________________________ .SIGMA.d = 71.178 .about. 71.645 .about. 71.589
TABLE 6B______________________________________Aspherical Coefficient of Fifth Embodiment______________________________________r5: r6:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.26718 .times. 10.sup.-4 A4 = -0.28960 .times. 10.sup.-4A6 = -0.10520 .times. 10.sup.-6 A6 = -0.17707 .times. 10.sup.-6A8 = -0.36923 .times. 10.sup.-11 A8 = 0.47075 .times. 10.sup.-9A10 = -0.23644 .times. 10.sup.-12 A10 = -0.30757 .times. 10.sup.-11A12 = 0.16385 .times. 10.sup.-14 A12 = 0.12678 .times. 10.sup.-13 A14 = 0.80357 .times. 10.sup.-19 A16 = 0.17989 .times. 10.sup.-20______________________________________
TABLE 7A__________________________________________________________________________Lens Construction of Sixth Embodimentf = 82.0 .about. 120.0 .about. 158.0fNo. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________ r1 24.096 d1 5.520 N1 1.71300 .nu.1 53.93 r2 -163.557 d2 0.980 r3 -145.873 d3 1.920 N2 1.80741 .nu.2 31.59 r4 47.389 d4 8.695 .about. 15.630 .about. 19.294 r5 Stop d5 0.800* r6 -58.697 d6 1.000 N3 1.85000 .nu.3 40.04 r7 190.384 d7 5.320 r8 1027.485 d8 3.020 N4 1.51680 .nu.4 64.20 r9 -16.363 d9 12.665 .about. 5.328 .about. 1.000* r10 -52.240 d10 1.840 N5 1.79850 .nu.5 22.60 r11 -18.355 d11 0.450 r12 -14.891 d12 0.750 N6 1.80500 .nu.6 40.97* r13 160.189__________________________________________________________________________ .SIGMA.d = 42.960 .about. 42.558 .about. 41.894
TABLE 7B______________________________________Aspherical Coefficient of Sixth Embodiment______________________________________r6: r13:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.44116 .times. 10.sup.-4 A4 = -0.44116 .times. 10.sup.-4A6 = 0.23475 .times. 10.sup.-6 A6 = 0.23475 .times. 10.sup.-6A8 = -0.10883 .times. 10.sup.-7 A8 = -0.10883 .times. 10.sup.-7A10 = 0.15315 .times. 10.sup.-9 A10 = 0.15315 .times. 10.sup.-9A12 = -0.85233 .times. 10.sup.-12 A12 = -0.85233 .times. 10.sup.-11A14 = 0.78185 .times. 10.sup.-17 A14 = 0.78185 .times. 10.sup.-15A16 = 0.11566 .times. 10.sup.-18 A16 = 0.11566 .times. 10.sup.-17r10:.epsilon. = 0.10000 .times. 10A4 = -0.32730 .times. 10.sup.-4A6 = 0.28940 .times. 10.sup.-6A8 = 0.45843 .times. 10.sup.-8A10 = -0.71081 .times. 10.sup.-10A12 = 0.86070 .times. 10.sup.-12A14 = 0.12445 .times. 10.sup.-15A16 = 0.22007 .times. 10.sup.-17______________________________________
TABLE 8A__________________________________________________________________________Lens Construction of Seventh Embodimentf = 82.0 .about. 120.0 .about. 158.0fNo. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________ r1 24.101 d1 5.520 N1 1.71300 .nu.1 53.93 r2 -164.342 d2 0.980 r3 -146.567 d3 1.920 N2 1.80741 .nu.2 31.59 r4 47.397 d4 8.254 .about. 15.381 .about. 19.231 r5 Stop d5 0.800* r6 -58.620 d6 1.000 N3 1.85000 .nu.3 40.04* r7 170.198 d7 5.320 r8 1741.917 d8 3.020 N4 1.51680 .nu.4 64.20 r9 -16.363 d9 13.283 .about. 5.579 .about. 1.000* r10 -52.846 d10 1.840 N5 1.79850 .nu.5 22.60 r11 -18.357 d11 0.450 r12 -14.861 d12 0.750 N6 1.80500 .nu.6 40.97* r13 193.602__________________________________________________________________________ .SIGMA.d = 43.137 .about. 42.56 .about. 41.831
TABLE 8B______________________________________Aspherical Coefficient of Seventh Embodiment______________________________________r6: r10:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.43351 .times. 10.sup.-4 A4 = -0.33110 .times. 10.sup.-4A6 = 0.23167 .times. 10.sup.-6 A6 = 0.29430 .times. 10.sup.-6A8 = -0.10817 .times. 10.sup.-7 A8 = 0.46163 .times. 10.sup.-8A10 = 0.15377 .times. 10.sup.-9 A10 = -0.70917 .times. 10.sup.-10A12 = -0.84872 .times. 10.sup.-12 A12 = 0.86252 .times. 10.sup.-12A14 = 0.78185 .times. 10.sup.-17 A14 = 0.12445 .times. 10.sup.-15A16 = 0.11566 .times. 10.sup.-18 A16 = 0.22007 .times. 10.sup.-17r7: r13:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.36494 .times. 10.sup.-6 A4 = -0.60404 .times. 10.sup.-4A6 = 0.10444 .times. 10.sup.-7 A6 = 0.78833 .times. 10.sup.-6A8 = 0.46241 .times. 10.sup.-11 A8 = -0.15752 .times. 10.sup.-7A10 = -0.10907 .times. 10.sup.-12 A10 = 0.26799 .times. 10.sup.-9A12 = -0.25801 .times. 10.sup.-15 A12 = -0.15938 .times. 10.sup.-11 A14 = -0.12835 .times. 10.sup.-15 A16 = -0.23419 .times. 10.sup.-17______________________________________
TABLE 9A__________________________________________________________________________Lens Construction of Eighth Embodimentf = 82.0 .about. 120.0 .about. 158.0fNo. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________ r1 24.753 d1 7.000 N1 1.69100 .nu.1 54.75 r2 -170.668 d2 1.180 r3 -151.154 d3 1.980 N2 1.80741 .nu.2 31.59 r4 45.704 d4 5.025 .about. 13.271 .about. 18.355 r5 Flare Cutter d5 0.860* r6 -36.300 d6 1.000 N3 1.78831 .nu.3 47.32 r7 1509.958 d7 0.820 r8 Stop d8 3.230 r9 265.691 d9 3.350 N4 1.48749 .nu.4 70.44 r10 -16.318 d10 0.500 r11 Flare Cutter d11 17.495 .about. 5.328 .about. 1.000* r12 -82.136 d12 1.790 N5 1.79850 .nu.5 22.60 r13 -24.995 d13 0.940 r14 -17.066 d14 0.800 N6 1.80500 .nu.6 40.97* r15 -742.341__________________________________________________________________________ .SIGMA.d = 45.970 .about. 43.96 .about. 42.805
TABLE 9B______________________________________Aspherical Coefficient of Eighth Embodiment______________________________________r6: r15:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.39419 .times. 10.sup.-4 A4 = -0.33714 .times. 10.sup.-4A6 = 0.81732 .times. 10.sup.-7 A6 = 0.35844 .times. 10.sup.-6A8 = -0.50904 .times. 10.sup.-8 A8 = -0.80989 .times. 10.sup.-8A10 = 0.63079 .times. 10.sup.-10 A10 = 0.13636 .times. 10.sup.-9A12 = -0.32886 .times. 10.sup.-12 A12 = -0.78402 .times. 10.sup.-12r12:.epsilon. = 0.10000 .times. 10A4 = 0.10528 .times. 10.sup.-4A6 = 0.96880 .times. 10.sup.-7A8 = 0.20231 .times. 10.sup.-8A10 = -0.26508 .times. 10.sup.-10A12 = 0.26108 .times. 10.sup.-12______________________________________
TABLE 10A__________________________________________________________________________Lens Construction of Ninth Embodimentf = 82.0 .about. 120.0 .about. 158.0fNo. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________ r1 32.591 d1 5.877 N1 1.69100 .nu.1 54.75 r2 -161.851 d2 2.548 r3 -116.617 d3 1.000 N2 1.80741 .nu.2 31.59 r4 77.552 d4 15.396 .about. 31.343 .about. 37.054* r5 -25.895 d5 1.000 N3 1.83400 .nu.3 37.05* r6 -98.414 d6 0.568 r7 Stop d7 3.000 r8 -441.560 d8 3.192 N4 1.56873 .nu.4 63.10 r9 -14.775 d9 15.129 .about. 6.361 .about. 1.000* r10 -1940.843 d10 2.212 N5 1.75450 .nu.5 32.17 r11 -20.511 d11 0.565 r12 -15.522 d12 0.700 N6 1.80500 .nu.6 51.57* r13 71.145__________________________________________________________________________.SIGMA.d = 51.187 .about. 58.366 .about. 58.716 Closest Focusing (D = 1.0 m) d4 12.392 .about. 26.837 .about. 31.669 d9 18.133 .about. 10.867 .about. 6.385
TABLE 10B______________________________________Aspherical Coefficient of Ninth Embodiment______________________________________r5: r10:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.50264 .times. 10.sup.-4 A4 = -0.72467 .times. 10.sup.-5A6 = -0.88171 .times. 10.sup.-8 A6 = 0.66828 .times. 10.sup.-6A8 = -0.11756 .times. 10.sup.-7 A8 = -0.13765 .times. 10.sup.-7A10 = 0.27112 .times. 10.sup.-9 A10 = 0.35385 .times. 10.sup.-9A12 = -0.25465 .times. 10.sup.-11 A12 = -0.21767 .times. 10.sup.-11r6: r13:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.37396 .times. 10.sup.-6 A4 = -0.37474 .times. 10.sup.-4A6 = 0.64781 .times. 10.sup.-8 A6 = 0.52227 .times. 10.sup.-6A8 = -0.44828 .times. 10.sup.-11 A8 = -0.12204 .times. 10.sup.-7A10 = -0.30118 .times. 10.sup.-12 A10 = 0.31183 .times. 10.sup.-9A12 = -0.28385 .times. 10.sup.-14 A12 = -0.22332 .times. 10.sup.-11______________________________________
TABLE 11A__________________________________________________________________________Lens Construction of Tenth Embodimentf = 82.0 .about. 120.0 .about. 158.0fNo. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________* r1 32.410 d1 10.000 N1 1.62230 .nu.1 53.11 r2 -361.920 d2 6.700 r3 -113.705 d3 1.440 N2 1.84666 .nu.2 23.82 r4 107.861 d4 4.544 .about. 22.677 .about. 28.662* r5 -30.717 d5 1.200 N3 1.80741 .nu.3 31.59 r6 -271.463 d6 4.900 r7 -181.809 d7 2.670 N4 1.62280 .nu.4 56.88 r8 -15.642 d8 0.500 r9 Stop d9 15.937 .about. 6.779 .about. 1.000* r10 176.488 d10 1.970 N5 1.75000 .nu.5 25.14 r11 -22.454 d11 0.530 r12 -17.238 d12 0.850 N6 1.85000 .nu.6 40.04* r13 62.248__________________________________________________________________________ .SIGMA.d = 51.241 .about. 60.216 .about. 60.422
TABLE 11B______________________________________Aspherical Coefficient of Tenth Embodiment______________________________________r1: r10:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = 0.69127 .times. 10.sup.-8 A4 = -0.20483 .times. 10.sup.-4A6 = -0.56365 .times. 10.sup.-9 A6 = 0.96091 .times. 10.sup.-7A8 = 0.11704 .times. 10.sup.-11 A8 = 0.11560 .times. 10.sup.-7A10 = 0.19276 .times. 10.sup.-13 A10 = -0.21519 .times. 10.sup.-9A12 = -0.68161 .times. 10.sup.-16 A12 = 0.21269 .times. 10.sup.-11r5: r13:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.52915 .times. 10.sup.-4 A4 = -0.53625 .times. 10.sup.-4A6 = 0.21093 .times. 10.sup.-6 A6 = 0.67444 .times. 10.sup.-6A8 = -0.16873 .times. 10.sup.-7 A8 = -0.16134 .times. 10.sup.-7A10 = 0.31014 .times. 10.sup.-9 A10 = 0.36475 .times. 10.sup.-9A12 = -0.23164 .times. 10.sup.-11 A12 = -0.26644 .times. 10.sup.-11______________________________________
TABLE 12A__________________________________________________________________________Lens Construction of Eleventh Embodiment f = 82.0 .about. 120.0 .about. 158.0 f No. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 33.480 d1 4.300 N1 1.74250 .nu.1 52.47r2 -115.645 d2 0.900r3 -121.066 d3 1.000 N2 1.67741 .nu.2 28.50r4 62.780 d4 5.454 .about. 15.322 .about. 19.941r5 -28.888 d5 1.000 N3 1.51009 .nu.3 63.43r6 -116.093 d6 9.300r7 -91.771 d7 2.000 N4 1.64769 .nu.4 31.23r8 -33.543 d8 0.500r9 Stop d9 4.000r10 212.542 d10 2.630 N5 1.60881 .nu.5 58.86r11 -18.976 d11 0.180r12 -18.425 d12 0.800 N6 1.79504 .nu.6 28.39r13 -39.416 d13 16.747 .about. 6.819 .about. 1.000r14 -30.648 d14 1.300 N7 1.79850 .nu.7 22.60r15 -19.102 d15 0.100r16 -19.603 d16 0.800 N8 1.75450 .nu.8 51.57r17 355.100.SIGMA.d = 51.011 .about. 50.951 .about. 49.751__________________________________________________________________________
TABLE 13A__________________________________________________________________________Lens Construction of Twelfth Embodiment__________________________________________________________________________ f = 82.0 .about. 120.0 .about. 158.0 f No. = 4.6 .about. 5.2 .about. 5.8Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 36.656 d1 5.130 N1 1.70800 .nu.1 53.23r2 -120.408 d2 0.860r3 -132.510 d3 1.000 N2 1.74000 .nu.2 31.72r4 75.976 d4 5.429 .about. 18.174 .about. 23.493r5 -34.220 d5 1.000 N3 1.48749 .nu.3 70.44r6 -73.401 d6 12.900r7 Stop d7 5.680r8 159.548 d8 2.580 N4 1.77000 .nu.4 48.92r9 -24.967 d9 0.900r10 -21.289 d10 0.950 N5 1.84666 .nu.5 24.51r11 -34.151 d11 17.230 .about. 7.079 .about. 1.000r12 -29.184 d12 1.480 N6 1.79850 .nu.6 22.60r13 -20.039 d13 0.100r14 -21.828 d14 0.950 N7 1.75450 .nu.7 51.57r15 2732.017 .SIGMA.d = 56.189 .about. 58.783 .about. 58.023__________________________________________________________________________ Closest Focusing (D = 1.0 m) d4 1.988 .about. 13.405 .about. 17.865 d11 20.671 .about. 11.848 .about. 6.628__________________________________________________________________________
TABLE 14A__________________________________________________________________________Lens Construction of Thirteenth Embodiment__________________________________________________________________________ f = 82.0 .about. 138.0 .about. 234.0 f No. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 43.926 d1 12.000 N1 1.63980 .nu.1 34.55r2 246.738 d2 2.000r3 31.080 d3 8.850 N2 1.48749 .nu.2 70.44r4 278.824 d4 1.300 N3 1.78472 .nu.3 25.70* r5 29.662 d5 9.737 .about. 32.164 .about. 37.729r6 -27.530 d6 3.000 N4 1.85000 .nu.4 40.04r7 99.569 d7 0.850r8 Stop d8 0.850r9 -98.291 d9 5.500 N5 1.51728 .nu.5 69.43r10 -17.029 d10 0.100r11 41.613 d11 4.000 N6 1.48749 .nu.6 70.44r12 -21.925 d12 11.538 .about. 5.884 .about. 1.000* r13 -108.562 d13 0.750 N7 1.80500 .nu.7 40.97r14 23.084 d14 1.950r15 -144.723 d15 0.750 N8 1.85000 .nu.8 40.04* r16 34.666 d16 0.230r17 86.655 d17 2.600 N9 1.79850 .nu.9 22.60r18 -30.346.SIGMA.d = 66.005 .about. 82.778 .about. 83.459__________________________________________________________________________
TABLE 14B______________________________________Aspherical Coefficient of Thirteenth Embodiment______________________________________r6: r16:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.50885 .times. 10.sup.-4 A4 = -0.12509 .times. 10.sup.-3A6 = -0.33844 .times. 10.sup.-6 A6 = 0.74056 .times. 10.sup.-6A8 = 0.59822 .times. 10.sup.-8 A8 = -0.83283 .times. 10.sup.-8A10 = -0.69159 .times. 10.sup.-10 A10 = 0.68124 .times. 10.sup.-10A12 = 0.31293 .times. 10.sup.-12 A12 = -0.30883 .times. 10.sup.-12r13:.epsilon. = 0.10000 .times. 10A4 = -0.11983 .times. 10-3A6 = 0.83127 .times. 10.sup.-6A8 = -0.84355 .times. 10.sup.-8A10 = 0.70463 .times. 10.sup.-10A12 = -0.31428 .times. 10.sup.-12______________________________________
TABLE 15A__________________________________________________________________________Lens Construction of Fourteenth Embodiment f = 82.0 .about. 138.0 .about. 234.0 f No. = 4.6 .about. 5.5 .about. 5.8Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 41.589 d1 6.120 N1 1.83400 .nu.1 37.05r2 139.887 d2 1.500r3 32.987 d3 8.630 N2 1.48749 .nu.2 70.44r4 144.800 d4 1.300 N3 1.84666 .nu.3 23.82r5 31.525 d5 6.334 .about. 29.731 .about. 33.915r6 Stop d6 1.700* r7 -25.236 d7 0.900 N4 1.80500 .nu.4 40.97r8 84.973 d8 0.840r9 Flare Cutter d9 3.240r10 -408.893 d10 3.200 N5 1.48749 .nu.5 70.44r11 -16.423 d11 0.100r12 68.284 d12 3.330 N6 1.48749 .nu.6 70.44r13 -20.411 d13 0.100r14 Stop d14 11.827 .about. 5.615 .about. 1.000* r15 -472.567 d15 0.800 N7 1.77250 .nu.7 49.77r16 20.582 d16 1.720r17 -146.639 d17 0.800 N8 1.75450 .nu.8 51.57* r18 32.460 d18 0.100r19 57.832 d19 2.000 N9 1.79850 .nu.9 22.60r20 -59.876.SIGMA.d = 54.541 .about. 71.726 .about. 71.295__________________________________________________________________________
TABLE 15B______________________________________Aspherical Coefficient of Fourteenth Embodiment______________________________________r7: r18:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.60523 .times. 10.sup.-4 A4 = -0.14838 .times. 10.sup.-3A6 = -0.39512 .times. 10.sup.-6 A6 = 0.70475 .times. 10.sup.-6A8 = 0.59832 .times. 10.sup.-8 A8 = -0.76810 .times. 10.sup.-8A10 = -0.44617 .times. 10.sup.-10 A10 = 0.59949 .times. 10.sup.-10A12 = 0.44350 .times. 10.sup.-13 A12 = -0.39824 .times. 10.sup.-12r15:.epsilon. = 0.10000 .times. 10A4 = -0.13498 .times. 10-3A6 = 0.79659 .times. 10.sup.-6A8 = -0.91736 .times. 10.sup.-8A10 = 0.89663 .times. 10.sup.-10A12 = -0.51932 .times. 10.sup.-12______________________________________
TABLE 16A__________________________________________________________________________Lens Construction of Fifteenth Embodiment f = 82.0 .about. 138.0 .about. 234.0 f No. = 4.6 .about. 5.6 .about. 5.8Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 36.993 d1 5.480 N1 1.80500 .nu.1 40.97r2 100.363 d2 6.400r3 24.493 d3 7.000 N2 1.48749 .nu.2 70.44r4 192.356 d4 0.100 N3 1.70055 .nu.3 30.11r5 177.167 d5 1.300 .about. 23.685 .about. 28.473r6 20.018 d6 5.535* r7 -31.209 d7 0.900 N4 1.85000 .nu.4 40.04r8 101.241 d8 3.030r9 -328.159 d9 4.060 N5 1.48749 .nu.5 70.44r10 -15.566 d10 1.950r11 44.887 d11 3.760 N6 1.48749 .nu.6 70.44r12 -22.013 d12 0.100r13 Stop d13 9.080 .about. 4.579 .about. 1.000* r14 -34.985 d14 0.750 N7 1.85000 .nu.7 40.04r15 27.438 d15 2.000r16 -40.087 d16 0.750 N8 1.80500 .nu.8 40.97* r17 103.884 d17 0.100r18 95.499 d18 2.570 N9 1.79850 .nu.9 22.60r19 -26.962.SIGMA.d = 54.865 .about. 68.514 .about. 69.723__________________________________________________________________________
TABLE 16B______________________________________Aspherical Coefficient of Fifteenth Embodiment______________________________________r7: r17:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.61722 .times. 10.sup.-4 A4 = -0.48594 .times. 10.sup.-4A6 = -0.16007 .times. 10.sup.-6 A6 = 0.57978 .times. 10.sup.-6A8 = 0.80476 .times. 10.sup.-9 A8 = -0.14360 .times. 10.sup.-7A10 = -0.56202 .times. 10.sup.-11 A10 = 0.17839 .times. 10.sup.-9A12 = 0.47071 .times. 10.sup.-14 A12 = -0.85458 .times. 10.sup.-12r14:.epsilon. = 0.10000 .times. 10A4 = -0.32203 .times. 10.sup.-4A6 = 0.63012 .times. 10.sup.-6A8 = -0.15013 .times. 10-7A10 = 0.18658 .times. 10-9A12 = -0.90240 .times. 10.sup.-12______________________________________
TABLE 17A__________________________________________________________________________Lens Construction of Sixteenth Embodiment f = 82.0 .about. 138.0 .about. 234.0 f No. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 40.564 d1 8.850 N1 1.67339 .nu.1 29.25r2 421.058 d2 0.100r3 34.256 d3 8.480 N2 1.48749 .nu.2 70.44r4 -488.749 d4 1.300 N3 1.80518 .nu.3 25.43r5 29.724 d5 11.762 .about. 36.109 .about. 42.55* r6 .-38.801 d6 2.450 N4 1.77551 .nu.4 37.90r7 42.307 d7 1.320r8 Stop d8 1.480r9 -274.307 d9 5.250 N5 1.51680 .nu.5 64.20r10 -16.525 d10 0.900r11 48.360 d11 5.130 N6 1.48749 .nu.6 70.44r12 -20.656 d12 9.447 .about. 5.615 .about. 1.000* r13 -820.647 d13 0.800 N7 1.83400 .nu.7 37.05r14 19.756 d14 2.550r15 -55.324 d15 0.800 N8 1.85000 .nu.8 40.04* r16 35.028 d16 0.230r17 105.734 d17 2.930 N9 1.79850 .nu.9 22.60r18 -24.386.SIGMA.d = 63.779 .about. 83.791 .about. 86.21__________________________________________________________________________
TABLE 17B______________________________________Aspherical Coefficient of Sixteenth Embodiment______________________________________r6: r16:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.65731 .times. 10.sup.-4 A4 = -0.13246 .times. 10.sup.-3A6 = -0.31441 .times. 10.sup.-6 A6 = 0.73791 .times. 10.sup.-6A8 = 0.49324 .times. 10.sup.-8 A8 = -0.94943 .times. 10.sup.-8A10 = -0.60268 .times. 10.sup.-10 A10 = 0.86587 .times. 10.sup.-10A12 = 0.27929 .times. 10.sup.-12 A12 = -0.44144 .times. 10.sup.-12r13:.epsilon. = 0.1000 .times. 10A4 = -0.12079 .times. 10.sup.-3A6 = 0.66521 .times. 10.sup.-6A8 = -0.78435 .times. 10.sup.-8A10 = 0.84146 .times. 10.sup.-10A12 = -0.44119 .times. 10.sup.-12______________________________________
TABLE 18A__________________________________________________________________________Lens Construction of Seventeenth Embodiment f = 82.0 .about. 120.0 .about. 158.0 f No. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 24.719 d1 7.000 N1 1.69350 .nu.1 51.83r2 -146.346 d2 1.180r3 -117.052 d3 1.980 N2 1.80741 .nu.2 31.59r4 45.312 d4 5.292 .about. 15.167 .about. 21.378r5 Stop d5 0.860* r6 -36.255 d6 1.000 N3 1.78831 .nu.3 47.32r7 -561.520 d7 0.820r8 Flare Cutter d8 3.230r9 347.472 d9 3.350 N4 1.48749 .nu.4 70.44r10 -16.332 d10 0.500r11 Stop d11 17.086 .about. 7.211 .about. 1.000* r12 -85.730 d12 1.790 N5 1.79850 .nu.5 22.60r13 -27.436 d13 0.940r14 -17.016 d14 0.800 N6 1.80500 .nu.6 40.97* r15 -259.281.SIGMA.d = 45.828 .about. 45.828 .about. 45.828__________________________________________________________________________
TABLE 18B______________________________________Aspherical Coefficient of Seventeenth Embodiment______________________________________r6: r15:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.38332 .times. 10.sup.-4 A4 = -0.34091 .times. 10.sup.-4A6 = 0.78074 .times. 10.sup.-7 A6 = 0.35339 .times. 10.sup.-6A8 = -0.50818 .times. 10.sup.-8 A8 = -0.81651 .times. 10.sup.-8A10 = 0.63173 .times. 10.sup.-10 A10 = 0.13540 .times. 10.sup.-9A12 = -0.32902 .times. 10.sup.-12 A12 = -0.80298 .times. 10.sup.-12r12:.epsilon. = 0.10000 .times. 10A4 = -0.97551 .times. 10-5A6 = 0.10049 .times. 10.sup.-6A8 = 0.20604 .times. 10.sup.-8A10 = -0.26332 .times. 10.sup.-10A12 = 0.25959 .times. 10.sup.-12______________________________________
TABLE 19A__________________________________________________________________________Lens Construction of Eighteenth Embodiment f = 82.0 .about. 120.0 .about. 158.0 f No. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 39.782 d1 4.900 N1 1.69680 .nu.1 56.47r2 -126.443 d2 0.900r3 -198.873 d3 1.000 N2 1.75000 .nu.2 25.14r4 110.252 d4 7.759 .about. 17.235 .about. 21.169r5 Stop d5 2.000r6 -21.416 d6 1.000 N3 1.51680 .nu.3 64.20r7 -99.032 d7 6.500r8 -49.900 d8 2.400 N4 1.67339 .nu.4 29.25r9 -22.506 d9 5.952r10 90.180 d10 4.100 N5 1.60881 .nu.5 58.86r11 -16.198 d11 0.810 N6 1.75520 .nu.6 27.51r12 -52.137 d12 16.591 .about. 6.647 .about. 1.000r13 -42.194 d13 1.800 N7 1.79850 .nu.7 22.60r14 -22.114 d14 0.210r15 -22.305 d15 0.800 N8 1.75450 .nu.8 51.57r16 93.408.SIGMA.d = 56.722 .about. 56.254 .about. 54.541__________________________________________________________________________
TABLE 20A__________________________________________________________________________Lens Construction of Nineteenth Embodiment__________________________________________________________________________ f = 82.0 .about. 120.0 .about. 158.0 f No. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 29.774 d1 4.900 N1 1.69100 .nu.1 54.75r2 -734.214 d2 0.900r3 1135.048 d3 1.000 N2 1.80518 .nu.2 25.43r4 61.587 d4 5.128 .about. 16.319 .about. 21.887r5 Stop d5 2.000r6 -19.512 d6 1.000 N3 1.48749 .nu.3 70.44r7 -99.455 d7 2.500r8 -26.840 d8 2.400 N4 1.67339 .nu.4 29.25r9 -18.643 d9 4.500r10 67.466 d10 4.100 N5 1.51728 .nu.5 69.43r11 -20.737 d11 0.810 N6 1.75000 .nu.6 25.14* r12 -36.181 d12 18.936 .about. 7.745 .about. 1.000* r13 -28.411 d13 1.800 N7 1.83350 .nu.7 21.00r14 -20.858 d14 0.400r15 -19.368 d15 0.800 N8 1.75450 .nu.8 51.57* r16 -136.490.SIGMA.d = 51.174 .about. 51.174 .about. 49.997__________________________________________________________________________ Closest Focusing (D = 1.0 m) d4 1.215 .about. 10.872 .about. 15.247 d12 22.849 .about. 13.192 .about. 7.640__________________________________________________________________________
TABLE 20B______________________________________Aspherical Coefficient of Nineteenth Embodiment______________________________________r12: r16:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = 0.41519 .times. 10-5 A4 = -0.32367 .times. 10.sup.-5A6 = -0.19986 .times. 10.sup.-8 A6 = -0.19044 .times. 10.sup.-7A8 = -0.27913 .times. 10.sup.-10 A8 = 0.14468 .times. 10.sup.-9A10 = -0.11359 .times. 10.sup.-12 A10 = 0.45260 .times. 10.sup.-11A12 = 0.14355 .times. 10.sup.-14 A12 = -0.42698 .times. 10.sup.-13r13:.epsilon. = 0.10000 .times. 10A4 = 0.22402 .times. 10.sup.-5A6 = 0.14821 .times. 10.sup.-7A8 = 0.12811 .times. 10.sup.-10A10 = -0.26781 .times. 10.sup.-13A12 = -0.20030 .times. 10.sup.-14______________________________________
TABLE 21A__________________________________________________________________________Lens Construction of Twentieth Embodiment__________________________________________________________________________ f = 82.0 .about. 120.0 .about. 158.0 f No. = 4.4 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 27.016 d1 6.000 N1 1.69350 .nu.1 50.29r2 -162.243 d2 1.000r3 -161.398 d3 1.500 N2 1.80518 .nu.2 25.43r4 64.048 d4 5.210 .about. 13.997 .about. 18.310r5 Stop d5 1.500* r6 -111.894 d6 0.956 N3 1.51728 .nu.3 69.43r7 27.712 d7 0.481r8 26.428 d8 0.999 N4 1.67339 .nu.4 29.25r9 36.197 d9 4.600r10 112.883 d10 0.664 N5 1.75000 .nu.5 25.14r11 43.862 d11 4.500 N6 1.51728 .nu.6 69.43r12 -18.004 d12 0.000r13 Flare Cutter d13 12.899 .about. 5.428 .about. 1.000r14 -103.181 d14 1.000 N7 1.75450 .nu.7 51.57r15 44.391 d15 1.699* r16 272.257 d16 2.100 N8 1.67339 .nu.8 29.25r17 -19.223 d17 0.520r18 -15.051 d18 0.900 N9 1.78831 .nu.9 47.32* r19 -99.766.SIGMA.d = 46.528 .about. 47.844 .about. 47.729__________________________________________________________________________ Closest Focusing (D = 1.0 m) d4 1.432 .about. 8.923 .about. 12.275 d13 16.677 .about. 10.501 .about. 7.035__________________________________________________________________________
TABLE 21B______________________________________Aspherical Coefficient of Nineteenth Embodiment______________________________________r6: r19:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.51682 .times. 10.sup.-4 A4 = -0.49756 .times. 10.sup.-4A6 = 0.21032 .times. 10.sup.-6 A6 = 0.64250 .times. 10.sup.-6A8 = -0.95868 .times. 10.sup.-8 A8 = -0 16276 .times. 10.sup.-7Ai0 = 0.14680 .times. 10.sup.-9 A10 = 0.26982 .times. 10.sup.-9A12 = 0.16682 .times. 10.sup.-12 A12 = -0.15553 .times. 10.sup.-11A14 = -0.95748 .times. 10.sup.-15 A14 = 0.17043 .times. 10.sup.-15A16 = 0.13103 .times. 10.sup.-16 A16 = -0.31331 .times. 10.sup.-17r16:.epsilon. = 0.10000 .times. 10A4 = -0.32114 .times. 10.sup.-4A6 = 0.19507 .times. 10.sup.-6A8 = 0.41842 .times. 10.sup.-8A10 = -0.75382 .times. 10.sup.-10A12 = 0.79392 .times. 10.sup.-12A14 = -0.58510 .times. 10.sup.-15A16 = 0.20482 .times. 10.sup.-17______________________________________
TABLE 22A__________________________________________________________________________Lens Construction of Twenty-first Embodiment f = 82.0 .about. 120.0 .about. 195.0 f No. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 37.487 cl1 5.865 N1 1.69350 .nu.1 50.29r2176.281 d2 0.892r3 -195.347 d3 1.500 N2 1.80518 .nu.2 25.43d4 102.078 d4 4.305 .about. 18.609 .about. 27.073r5 Stop d5 1.500* r6 -213.618 d6 0.956 N3 1.48749 .nu.3 70.44r7 33.905 d7 0.458r8 22.311 d8 1.300 N4 1.67339 .nu.4 29.25r9 27.186 d9 4.406r10 126.750 d10 0.664 N5 1.68300 .nu.5 31.52r11 30.344 d11 5.794 N6 1.51728 .nu.6 69.43r12 -19.071 d12 0.000r13 Flare Cutter d13 15.081 .about. 7.865 .about. 1.000r14 124.678 d14 0.966 N7 1.80750 .nu.7 35.43r15 19.012 d15 1.979* r16 34.987 d16 2.700 N8 1.75690 .nu.8 29.69r17 -21.241 d17 0.959r18 -15.594 d18 0.900 N9 1.78831 .nu.9 47.32* r19 212.741.SIGMA.d = 50.225 .about. 57.313 .about. 58.912__________________________________________________________________________
TABLE 22B______________________________________Aspherical Coefficient of Twenty-first Embodiment______________________________________r6: r19:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.46993 .times. 10.sup.-4 A4 = -0.69557 .times. 10.sup.-4A6 = 0.26232 .times. 10.sup.-6 A =6 0.53709 .times. 10.sup.-6A8 = -0.10280 .times. 10.sup.-7 A8 = -0.16549 .times. 10.sup.-7A10 = 0.14261 .times. 10.sup.-9 A10 = 0.27094 .times. 10.sup.-9A12 = -0.88700 .times. 10.sup.-12 A12 = -0.15055 .times. 10.sup.-11A14 = 0.10842 .times. 10.sup.-14 A14 = 0.52740 .times. 10.sup.-15A16 = 0.65934 .times. 10.sup.-17 A16 = -0.23824 .times. 10.sup.-16r16:.epsilon. = 0.10000 .times. 10A4 = -0.26837 .times. 10-4A6 = 0.81262 .times. 10.sup.-7A8 = 0.33315 .times. 10.sup.-8A10 = -0.79489 .times. 10.sup.-10A12 = 0.77630 .times. 10.sup.-12A14 = -0.74657 .times. 10.sup.-15A16 = -0.97514 .times. 10.sup.-18______________________________________
TABLE 23A__________________________________________________________________________Lens Construction of Twenty-second Embodiment__________________________________________________________________________ f = 153.7 .about. 225.0 .about. 296.2 f No. = 4.6 .about. 5.2 .about. 5.7Radius of Axial Refractive AbbeCurvature Distance Index (Nd) Number__________________________________________________________________________r1 46.686 d1 11.100 N1 1.75450 .nu.1 51.57r2 -345.999 d2 3.200r3 -233.734 d3 2.500 N2 1.84666 .nu.2 23.82r4 130.104 d4 16.776 .about. 22.304 .about. 25.867r5 Stop d5 2.810* r6 -3000.030 d6 1.500 N3 1.48749 .nu.3 70.44r7 74.051 d7 0.100r8 33.273 d8 3.790 N4 1.59270 .nu.4 35.45r9 36.365 d9 4.360r10 -4379.242 d10 1.650 N5 1.84666 .nu.5 23.82r11 71.395 d11 9.900 N6 1.58144 .nu.6 40.89r12 -35.758 d12 4.994r13 Flare Cutter d13 14.403 .about. 6.548 .about. 1.875r14 -72.870 d14 1.500 N7 1.87800 .nu.7 38.14r15 20.034 d15 0.130* r16 20.584 d16 10.600 N8 1.67339 .nu.8 29.25r17 -17.570 d17 0.260r18 -16.447 d18 1.500 N9 1.87800 .nu.9 38.14* r19 -100.155.SIGMA.d = 91.073 .about. 88.746 .about. 87.636__________________________________________________________________________
TABLE 23B______________________________________Aspherical Coefficient of Twenty-second Embodiment______________________________________r6: r19:.epsilon. = 0.10000 .times. 10 .epsilon. = 0.10000 .times. 10A4 = -0.88605 .times. 10.sup.-5 A4 = -0.99933 .times. 10.sup.-5A6 = 0.59406 .times. 10.sup.-8 A6 = 0.12268 .times. 10.sup.-7A8 = -0.10728 .times. 10.sup.-9 A8 = -0.27224 .times. 10.sup.-9A10 = 0.52575 .times. 10.sup.-12 A10 = 0.34258 .times. 10.sup.-11A12 = -0.90447 .times. 10.sup.-15 A12 = 0.13922 .times. 10.sup.-13A14 = -0.28885 .times. 10.sup.-18 A14 = -0.18280 .times. 10.sup.-15A16 = 0.53635 .times. 10 .sup.-21 A16 = -0.28732 .times. 10.sup.-17r16:.epsilon. = 0.10000 .times. 10A4 = -0.84751 .times. 10.sup.-6A6 = -0.10095 .times. 10.sup.-7A8 = 0.80736 .times. 10.sup.-9A10 = -0.15887 .times. 10.sup.-12A12 = -0.65737 .times. 10.sup.-13A14 = -0.39966 .times. 10.sup.-15A16 = 0.98706 .times. 10.sup.-17______________________________________
In Embodiments 1 through 4, the first lens unit comprises a negative meniscus lens having a concave surface on the object side and a positive lens having convex surfaces on both sides, the second lens unit comprises a negative meniscus lens having a concave surface on the image side and a positive meniscus lens having a convex surface on the image side, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative meniscus lens having a concave surface on the object side.
In Embodiment 5, the first lens unit comprises a negative lens having concave surfaces on both sides and a positive lens having convex surfaces on both sides, the second lens unit comprises a negative meniscus lens having a concave surface on the image side and a positive meniscus lens having a convex surface on the image side, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative meniscus lens having a concave surface on the object side.
In Embodiments 6 and 7, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative lens having concave surfaces on both sides and a positive lens having convex surfaces on both sides, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative lens having concave surfaces on both sides.
In Embodiment 8, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative lens having concave surfaces on both sides and a positive lens having convex surfaces on both sides, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative meniscus lens having a concave surface on the object side.
In Embodiments 9 and 10, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative meniscus lens having a concave surface on the object side and a positive meniscus lens having a convex surface on the image side, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative lens having concave surfaces on both sides. Focusing is performed using the second lens unit.
In Embodiment 11, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative meniscus lens having a concave surface on the object side, a positive meniscus lens having a convex surface on the image side, a positive lens having convex surfaces on both sides and a negative meniscus lens having a concave surface on the object side, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative lens having concave surfaces on both sides.
In Embodiment 12, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative meniscus lens having a concave surface on the object side, a positive lens having convex surfaces on both sides and a negative meniscus lens having a concave surface on the object side, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative lens having concave surfaces on both sides. Focusing is performed using the second lens unit.
In Embodiment 13, the first lens unit comprises a positive meniscus lens having a convex surface on the object side and a combination lens comprising a positive meniscus lens having a convex surface on the object side and a negative meniscus lens having a concave surface on the image side, the second lens unit comprises a negative lens having concave surfaces on both sides, a positive meniscus lens having a convex surface on the image side and a positive lens having convex surfaces on both sides, and the third lens unit comprises a negative lens having concave surfaces on both sides, a negative lens having concave surfaces on both sides and a positive lens having convex surfaces on both sides.
In Embodiment 14, the first lens unit comprises a positive meniscus lens having a convex surface on the object side and a combination lens comprising a positive meniscus lens having a convex surface on the object side and a negative meniscus lens having a concave surface on the image side, the second lens unit comprises a negative lens having concave surfaces on both sides, a positive meniscus lens having a convex surface on the image side and a positive lens having convex surfaces on both sides, and the third lens unit comprises a negative lens having concave surfaces on both sides, a negative lens having concave surfaces on both sides and a positive lens having convex surfaces on both sides.
In Embodiment 15, the first lens unit comprises a positive meniscus lens having a convex surface on the object side, a positive meniscus lens having a convex surface on the object side and a negative meniscus lens having a concave surface on the image side, the second lens unit comprises a negative lens having concave surfaces on both sides, a positive meniscus lens having a convex surface on the image side and a positive lens having convex surfaces on both sides, and the third lens unit comprises a negative lens having concave surfaces on both sides, a negative lens having concave surfaces on both sides and a positive lens having convex surfaces on both sides.
In Embodiment 16, the first lens unit comprises a positive meniscus lens having a convex surface on the object side and a combination lens comprising a positive meniscus lens having a convex surface on the object side and a negative meniscus lens having a concave surface on the image side, the second lens unit comprises a negative lens having concave surfaces on both sides, a positive meniscus lens having a convex surface on the image side and a positive lens having convex surfaces on both sides, and the third lens unit comprises a negative lens having concave surfaces on both sides, a negative lens having concave surfaces on both sides and a positive lens having convex surfaces on both sides.
In Embodiment 17, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative meniscus lens having a concave surface on the image side and a positive lens having convex surfaces on both sides, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a positive lens having a convex surface on the object side. During zooming, the first and third lens units move together.
In Embodiment 18, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative meniscus lens having a concave surface on the object side, a positive meniscus lens having a convex surface on the image side and a combination lens comprising a positive lens having convex surfaces on both sides and a negative meniscus lens having a concave surface on the object side, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative lens having concave surfaces on both sides.
In Embodiment 19, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative meniscus lens having concave surface on the image side, the second lens unit comprises a negative meniscus lens having a concave surface on the object side, a positive meniscus lens having a convex surface on the image side and a combination lens comprising a positive lens having convex surfaces on both sides and a negative meniscus lens having a concave surface on the object side, and the third lens unit comprises a positive meniscus lens having a convex surface on the image side and a negative meniscus lens having a concave surface on the object side.
In Embodiment 20, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative lens having concave surfaces on both sides, a positive meniscus lens having a convex surface on the object side and a combination lens comprising a negative meniscus lens having a concave surface on the image side and a positive lens having convex surfaces on both sides, and the third lens unit comprises a negative lens having concave surfaces on both sides, a positive lens having convex surfaces on both sides and a negative meniscus lens having a concave surface on the object side.
In Embodiment 21, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative lens having concave surfaces on both sides, a positive meniscus lens having a convex surface on the object side and a combination lens comprising a negative meniscus lens having a concave surface on the image side and a positive lens having convex surfaces on both sides, and the third lens unit comprises a negative meniscus lens having a concave surface on the image side, a positive lens having convex surfaces on both sides and a negative meniscus lens having a concave surface on the object side.
In Embodiment 22, the first lens unit comprises a positive lens having convex surfaces on both sides and a negative lens having concave surfaces on both sides, the second lens unit comprises a negative lens having concave surfaces on both sides, a positive meniscus lens having a convex surface on the object side and a combination lens comprising a negative lens having concave surfaces on both sides and a negative lens having concave surfaces on both sides, and the third lens unit comprises a negative lens having concave surfaces on both sides, a positive lens having convex surfaces on both sides and a negative meniscus lens having a concave surface on the object side.
In all of the embodiments, the aperture is positioned on the object side or the image side of the second lens unit, or within the second lens unit. It moves together with the second lens unit or independently of the second lens unit during zooming. Focusing is performed using the second lens unit.
The relationships between the embodiments and the conditions are shown in the tables 24 and 25 below.
TABLE 24______________________________________Condition (1) (2) (3) (4) (5)______________________________________Lower Limit 21.6 1.5 0.5 0.1 0.1Upper Limit -- 20 30 10 5.0Emb. 1 35.5 3.34 1.34 1.58 0.76Emb. 2 36.5 3.31 1.34 1.58 0.74Emb. 3 35.4 3.34 1.34 1.58 0.76Emb. 4 35.5 3.34 1.34 1.58 0.76Emb. 5 36.0 3.33 1.34 1.62 0.75Emb. 6 29.6 9.49 0.85 1.24 0.52Emb. 7 29.6 9.05 0.85 1.19 0.53Emb. 8 29.0 3.92 0.97 1.12 0.60Emb. 9 29.5 15.40 1.18 1.88 0.57Emb. 10 29.0 30.3 1.29 2.08 0.60Emb. 11 29.1 5.45 0.92 1.14 0.57Emb. 12 29.3 5.43 1.12 1.56 0.59Emb. 13 29.1 9.74 1.48 4.41 0.46Emb. 14 28.7 7.30 1.19 3.35 0.44Emb. 15 29.0 5.03 1.42 4.70 0.41Emb. 16 31.1 11.67 1.56 5.26 0.41Emb. 17 29.0 4.10 1.03 1.28 0.59Emb. 18 27.6 9.76 0.94 1.20 0.59Emb. 19 29.8 7.13 0.94 1.09 0.59Emb. 20 28.1 6.71 0.85 1.23 0.51Emb. 21 27.6 5.80 1.08 1.64 0.51Emb. 22 28.8 2.85 0.67 0.87 0.49______________________________________
TABLE 25______________________________________ (6) (7) (8) (9)______________________________________Lower Limit 1.6 0.1 -5.0 6Upper Limit 3.0 5.0 -0.01 12Emb. 1 1.633 -0.45 2.57 7.971Emb. 2 1.678 -2.17 2.66 7.971Emb. 3 1.634 -0.42 2.60 7.971Emb. 4 1.634 -0.45 2.57 7.971Emb. 5 1.649 -0.19 2.44 7.830Emb. 6 1.912 2.43 -1.19 8.420Emb. 7 1.885 2.43 -1.19 8.420Emb. 8 1.667 2.29 -2.00 10.160Emb. 9 1.747 1.74 -2.64 9.425Emb. 10 1.676 1.57 -2.15 18.140Emb. 11 1.748 1.82 -1.45 6.200Emb. 42 1.683 1.58 -1.17 6.990Emb. 13 2.193 1.19 -2.53 24.150Emb. 14 2.291 1.64 -2.62 17.550Emb. 15 2.423 1.78 -2.23 20.280Emb. 16 2.440 1.36 -1.64 18.730Emb. 17 1.690 2.30 -1.78 10.160Emb. 18 1.705 1.44 -1.98 6.800Emb. 19 1.705 1.90 -2.05 6.800Emb. 20 1.966 2.10 -0.38 8.500Emb. 21 1.952 1.52 -0.19 8.257Emb. 22 2.048 2.48 -0.02 16.800______________________________________
The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Number	Name	Date
4185893	Ogawa et al.	Jan 1980
5216547	Ogata	Jun 1993
5260833	Ito et al.	Nov 1993
5325235	Takashima et al.	Jun 1994
5343329	Ito	Aug 1994
5353159	Morooka	Oct 1994

Number	Date	Country
2135312	May 1990	JPX
5173069	Jul 1993	JPX

Zoom lens system

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