Wide angle lens

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a wide angle photogrphic lens, and more particularly to a compact lens whose telephoto ratio is 0.96 and a half angle of view is above about 35.degree..
2. Description of the Prior Art
For use with so-called compact cameras, an attempt has been made for development of lenses of the type in which a retrofocus type used as a wide angle lens is inverted so as to provide a photographic lens in the form of a wide angle and of a small telephoto ratio.
Of lenses of this kind, there are many lenses composed of four groups or five groups having, as a rear unit, a negative meniscus lens with a convex surface thereof greatly curved toward an image. Among these lenses, a wide angle lens of small telephoto ratio, which is simple in construction and which consists of a front unit comprising a convex, a concave and a convex and a rear unit with a surface greatly curved toward an image, has an angle of view smaller than 32.degree., and if this wide angle lens is used, for example, for a 35 mm lens shutter camera, focal length was more or less 35 mm. This wide angle lens has a telephoto ratio of about 1, and even if an aspherical surface is introduced therein, the telephoto ratio is above 0.95. Where a 35 mm camera is used, it has been difficult to make a length from the front end of the lens to a film surface less than 30 mm.
For example, the lens disclosed in Japanese Patent Application Laid-Open No. 73014/80 has a telephoto ratio of about 1 and an angle of view of about 31.5.degree., and the lens disclosed in Japanese Patent Application Laid-Open No. 94317/81 has an angle of view of about 30.degree.. Japanese Patent Application Laid-Open No. 85410/83 disclose a compact construction but has F number of 4.5-5.6 which is dark and an angle of view of 30.7.degree.. Japanese Patent Application Laid-Open No. 59217/81 discloses one in which an aspherical surface is introduced into a post-group lens, which has an angle of view of 31.5.degree. and a telephoto ratio is above 0.95.
Japanese Patent Application Laid-Open Nos. 133711/81, 95207/81, 1117/83, 62608/83, 44016/84, etc. have been known which provide a five-group construction. Any of these patent applications have an angle of view smaller than 64.degree.. The lens disclosed in Japanese Patent Application Laid-Open No. 219509/83 has an angle of view of 39.degree. but a telephoto ratio is great, i.e., 1.1, which is not sufficient to form the lens into compactness.
Japanese Patent Application Laid-Open Nos. 75612/81, 94317/81 and 57106/83 have been known which provide a four-group construction and in which a negative meniscus lens gratly curved in the post-group is made of resin. However, an easily processed resin lens has a disadvantage that a change in refractive index due to a change in temperature is great therby posing a problem that backfocus is varied. This disadvantage becomes remarkable if a power of a negative lens is increased to reduce the overall length of lens. As an example, there is disclosed Japanese Patent Application Laid-Open No. 44016/84 in which a resin lens having no power if formed into an aspherical surface in order to eliminate the aforesaid disadvantage. However, this proposal has a limitation in the design of lens.
SUMMARY OF THE INVENTION
It is an object of this invention to provide, in a so-called inverted retrofocus type lens, a wide angle lens in which aspherical surfaces are introduced into a front unit and a rear unit to thereby obtain a half angle of view of 35.degree. and a telephoto ratio of 0.96 or less.
It is another object of the invention to provide a lens in which a lens into which an aspherical surface is introduced comprises an easily processed resin lens while minimizing the influence by change in temperature.
In accordance with the present invention, there is provided a wide angle lens comprising a lens system which is composed of, from an object side, a front unit comprising a positive lens L.sub.1, a negative lens L.sub.2 and a positive lens L.sub.3 and a rear unit comprising a negative meniscus L.sub.4 with a convex surface thereof greatly curved toward an image, wherein at least one of refractive surfaces of the lens L.sub.3 and at least one surface of the fourth lens are formed into an aspherical surface, and wherein the following conditions are satisfied:
0.45<f/.vertline.f.sub.4 .vertline.<2.5 f.sub.4 <0 (1)
1.7<N.sub.2 ( 2)
where
f.sub.4 : focal length of the fourth lens L.sub.4
N.sub.2 : refractive index of a glass material of the second lens L.sub.2.
It will be noted that the aforesaid third positive lens L.sub.3 can be of a single lens or a cemented lens composed of a positive lens and a negative lens, and or can be composed of two positive lenses L.sub.31 and L.sub.32.
If an aspherical shape is expressed by ##EQU1## the amount of displacement due to the aspherical surface is given by the following with respect to the j surface: ##EQU2## C*=C+2A.sub.2 (paraxial curvature) .phi.: height from an optical axis
Preferably, the following conditions are satisfied: Where an aspherical surface is introduced into each lens surface, in the surface of the first lens on the object side,
-0.5.times.10.sup.-2 <.DELTA.X(0.13f)/f<-0.1.times.10.sup.-4 ( 3)
where it is introduced into an image side of the first lens,
0.1.times.10.sup.-4 <.DELTA.X(0.13f)/f<0.1.times.10.sup.-1 ( 4),
in case of the object side of the second lens,
-0.5.times.10.sup.-2 <.DELTA.X(0.1f)/f<-0.1.times.10.sup.-4 ( 5),
in case of the image side of the second lens,
0.1.times.10.sup.-4 <.DELTA.X(0.1f)/f<0.5.times.10.sup.-2 ( 6),
in case of the object side of the third lens,
-0.5.times.10.sup.-2 <.DELTA.X(0.1f)/f<-0.1.times.10.sup.-4 ( 7),
in case of the image side of the third lens,
0.1.times.10.sup.-4 <.DELTA.X(0.1f)/f<0.5.times.10.sup.-2 ( 8),
in case of the concave surface on the object side of the fourth lens,
0.5.times.10.sup.-3 <.DELTA.X(0.13f)/f<0.3 (9),
in case of the convex surface on the image side of the fourth lens,
-0.5.times.10.sup.-1 <.DELTA.X(0.14f)/f<-0.1.times.10.sup.-4 ( 10),
and where both surfaces of the fourth lens are formed into an aspherical surface, the object side is
0.1.times.10.sup.-1 <.DELTA.X(0.13f)/f<0.3 (11)
and the image side is
0.3.times.10.sup.-3 <.DELTA.X(0.14f)/f<0.3.times.10.sup.-1 ( 12)
It will be of course noted that the aspherical surface is not limited to a respective one surface of the front unit and rear unit but it can be introduced into surfaces more than three in total. In this case, a problem is present in respect of a total of an amount of displacement of the front unit and rear unit from the respective spherical surfaces.
Where the third positive lens L.sub.3 is a single lens or a cemented lens, the following conditions are satisfied: for the first to the third lenses,
-0.5.times.10.sup.-2 f<.DELTA.X.sub.1 (0.13f)+.DELTA.X.sub.3 (0.1f)+.DELTA.X.sub.5 (0.1f)-.DELTA.X.sub.2 (0.13f)-.DELTA.X.sub.4 (0.1f)-.DELTA.X.sub.6 (0.1f)<-0.1.times.10.sup.-4 f (13)
and for the fourth group,
0.1.times.10.sup.-3 f<.DELTA.X.sub.7 (0.13f)-.DELTA.X.sub.8 (0.14f)<0.3f (14)
More favorably, there is satisfied with the following condition:
1.15<f/f.sub.1.2.3 <2.0 (15)
f.sub.1.2.3 : combined focal length of the front unit.
Where the third lens L.sub.3 is composed of two positive lenses L.sub.31 and L.sub.32, there is satisfied with the following conditions, with resepct to these lenses L.sub.31 and L.sub.32, ##EQU3## and with respect to the rear unit ##EQU4##
Where either of the positive lenses L.sub.31 and L.sub.32 and the negative meniscus lens L.sub.4 are made to comprise resin lenses, the following condition is satisfied:
0.5<f.sub.Lp /.vertline.f.sub.4 .vertline.<5.0 (18)
where f.sub.Lp is the focal length of L.sub.31 or L.sub.32 formed of resin.
In the wide angle lens wherein the front unit comprises a construction composed of positive, negative, positive and the rear unit comprises a negative meniscus lens greatly curved toward the image, the positive refracting power of the front unit and the negative refracting power of the rear unit need be increased if the telephoto ratio is desired to be further reduced. However, if the refracting power of the front unit is increased, spherical aberration is short in compensation to generate an outwardly directed comatic flare, and an image surface curve is short in compensation and a distortion aberration becomes a bobbin shape. Further, if the refracting power of the rear unit is increased, an outwardly directed comatic flare is generated to increase the distortion aberration of the bobbin type.
The condition (1) is concerned with the negative refracting power of the fourth lens L.sub.4 which belongs to the rear unit. When the value exceed the lower limit, movement of a main point on the image side forwardly of the lens reduces and the telephoto ratio increases. Conversely, when the value exceeds the upper limit, the image surface curve becomes excessively compensated as described above, and occurrence of the outwardly directed coma and bobbin type distortion aberration is remarkable.
The condition (2) is provided to keep Petzval's sum adequate. In general, it has a tendency in the compact lens that the Petzval's sum becomes excessively small. Because of this, the refractive index of the second lens L.sub.2 which is a negative lens is taken within the range of this condition whereby the image surface curve may be restrained within a suitable range.
The refracting powers of the front unit and rear unit are increased, as described above, and the aspherical shapes are introduced to compensate various aberrations generated accordingly because the refracting power of the lens composed of positive, negative and positive in the front unit is too great to compensate the concave lens of the rear unit. Therefore, a surface having a convex power preferably comprises a modified ashperical surface in the shape whose curvature becomes gentler than a parent spherical surface due to the paraxial curvature as it moves away from an optical axis whereas a surface having a concave power preferably comprises a modified aspherical surface in the shape whose curvature becomes sharper than a parent spherical surface due to the paraxial curvature as it moves away from an optical axis.
The conditions (3) to (8) are concerned with such modified spherical surfaces as described above.
The condition (3) is provided to compensate a spherical aberration short in compensation, to compensate distortion aberrations of the outwardly directed coma and the bobbin type, and to compensate the image surface curve toward the over side.
The condition (4) is provided to show that outside the optical axis, a refracting surface is deformed from a parent spherical surface toward an image to compensate the spherical aberration and the short in compensation of the image surface curve.
The condition (5) is provided to show that outside the optical axis, a refracting surface is deformed toward an object, similarly to the condition (3), to thereby reduce the outwardly directed coma generated in the front unit and to minimize also the spherical aberration and bobbin type distortion aberration.
The condition (6) is provided for deformation similar to that of the condition (4), which is effective mainly for compensation of spherical aberration and image surface curve.
The condition (7) is similar in deforming direction and effect of an aspherical surface to those of the condition (5).
The condition (8) is provided to show that outside that optical axis, a refracting surface is deformed toward an image relative to a paraxial parent spherical surface to reduce the outwardly directed coma, and also reduce a spherical aberration and a bobbin type distortion aberration.
Of threshold values of the above-described conditions, the lower limit for positives and the upper limit for negatives are the limits at which effects of formation of aspherical surface are produced, and the upper limit for positives and the lower limit for negatives are the limits at which aspherical deformation is not excessively great, resulting in surplus compensation.
As clearly shown in a light path of FIG. 1, a portion A of edge light fluxes is incident upon external portions of convex, concave and convex lenses with formation of lens into wider angle, and occurrence of aberrations at said portions is remarkable. This can be compensated by the introduction of aspherical surfaces in the aforementioned conditions (3) to (8). On the other hand, a portion B of light fluxes passes through a high position outside the fourth lens, and occurrence of aberrations at sid portion is remarkable. The conditions of formation into aspherical surface to cope with the just-mentioned state are as in the conditions (9) to (12).
The condition (9) is provided to show that the curvature of the refracting surface is made gentle relative to the parent spherical surface outside the axis whereby the aforesaid outwardly directed coma and bobbin type distortion aberration may be reduced.
The condition (10) is provided to show that movement of an aspherical surface from the parent spherical surface outside the axis is made so as to make a curvature sharp whereby an inwardly directed coma is greatly produced as compared with the parent spherical surface, and as a consequence, an outwardly directed coma in the entire lens system is reduced. Also in the distortion aberration, a great barrel type aberration is produced at said surface, as a consequence of which a bobbin type distortion aberration in the entire system is reduced.
In these conditions (9) and (10), the lower limit of the condition (9) and the upper limit of the condition (10) are the limits at which compensation effect due to the ashperical surface is obtained, and the upper limit of the condition (9) and the lower limit of the condition (10) are the limits at which surplus compensation is not effected.
While the aforesaid limits are provided in case where one surface in the front unit and one surface in the rear unit are formed into ashperical surfaces, it should be noted that the aforesaid limits are not limited thereto but more than three surfaces in both front unit and rear unit can be formed into aspherical surfaces. In such a case, it will suffice that the above-described effects are brought forth by the total of effects obtained by the formation of ashperical surfaces, and therefore, directions of displacement of ashperical surfaces of individual surfaces are sometimes different from those of the conditions (3) to (10).
The condition (18) is provided to control the total of displacement of aspherical surfaces in the front unit in the case as described above, and the condition (14) is provided to control the total of displacement in the rear unit. The upper limit of the condition (13) and the lower limit of the condition (14) are the limits at which compensation effect can be expected, and conversely, the lower limit and the upper limit are the limits at which displacement becomes excessively large to produce no excessive aspherical effect.
Where both surfaces of the fourth group lens are formed into aspherical surfaces under the condition (14), the conditions (11) and (12) are preferably satisfied. The condition (12) is concerned with, along with the condition (11), the displacement in a direction at which both the surfaces of the fourth group lens are gentler in curvature outside the axis than that of the parent spherical surface, which is a displacement in a direction opposite to that of the condition (10). This arrangement is provided to make a comatic aberratin flat at an angle of view above 28.degree.. A large displacement of an aspherical surface of a surface on the object side is employed under the condition (11), and this enables a comatic aberration flat but in this case, an image surface curve is short in compensation and a bobbin type distortion aberration increases. However, the image side surface can be formed into an aspherical surface as in the condition (12 to thereby compensate the image surface curve and bobbin type distortion aberration.
The condition (15) is provided to increase the refracting power of the front unit to reduce the telephoto ratio. If the value exceeds the lower limit, the aforesaid effect is not obtained, and if the value exceed the upper limit, short in compensation of spherical aberration, bobbin type distortion aberration and great outwardly directed coma occur, leading to a difficulty in compensation even by the formation of aspherical surfaces.
The condition (16) is provided so that where the third positive lens L.sub.3 is composed of two positive lenses L.sub.31 and L.sub.32, the positive lenses L.sub.31 and L.sub.32 are formed into aspherical surfaces to compensate the aforementioned various aberrations. In surfaces of these lenses on the object side, an aspherical shape is employed which is displaced toward the object than a surface of a paraxial radius of curvature as it moves from a center of an optical axis toward an edge whereby a tendency occurs which compensates various aberrations produced in the front unit. In a surface on the image side, the provision of an aspherical shape displaced toward an image than a surface of a paraxial radius of curvature compensates various aberrations.
The condition (17) is concerned with an aspherical shape of a negative meniscus lens L.sub.5 in the rear unit. In the object side, an aspherical shape displaced toward an image from a surface of a paraxial radius of curvature as it moves from a center of an optical axis to an edge reduces an outwardly directed coma to minimize a bobbin type distortion aberration. Similarly, in an image side, displacement toward an object than a surface of a paraxial radius of curvature compensates the aforesaid aberration.
The aforementioned effects are not required independently with respect to individual surfaces as will be apparent from the conditions (16) and (17). Where a single aspherical surface is present, the aforementioned description is applied, but where a plurality of surfaces are formed into aspherical surfaces, a surface which principally contributes to compensation of aberrations is displaced as described above but a surface which auxiliarily contributes to compensation of aberrations is often displaced reversely thereto. However, the arrangement within the range of the conditions (16) and (17) as a whole will suffice.
The upper limit of the condition (16) and the lower limit of the condition (17) are the limits at which aberration compensation by deformation of an aspherical surface is effectively effected, and the lower limit of the condition (16) and the upper limit of the condition (17) are the conditions under which surplus compensation is avoided.
In a lens system in which the third lens L.sub.3 is composed of two positive lenses L.sub.31 and L.sub.32, either one of the positive lenses L.sub.31, L.sub.32 in the ante-group and the negative lens L.sub.4 in the rear unit can be of the resin lenses. As previously mentioned, in the resin lenses, backfocus changes by the change in refractive index resulting from the change in temperature, which poses a problem when they are used for a camera.
On the other hand, if both positive and negative lenses are formed of resins, the influence by the change in temperature can be mutually offset. This invention provides an arrangement wherein the positive lens L.sub.31 or L.sub.32 and the negative lens L.sub.4 are formed of resins but the positive lens L.sub.31 or L.sub.32 is smaller in power than that of the negative lens L.sub.4 but is positioned frontwardly of the negative lens L.sub.4, whereby variation of backfocus resulting from the change in temperature by the negative lens L.sub.4 can be restrained.
The condition (18) is provided to show the range in which such variation of backfocus can be offset.

BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a view showing a light path of lenses according to the present invention;
FIGS. 2 to 22 illustrate embodiments 1 to 21 in which a third positive lens L.sub.3 comprises a single lens or a cemented lens; and
FIGS. 23 to 33 illustrate embodiments 22 to 32 in whcih a third positive lens L.sub.3 comprises two positive lenses L.sub.31 and L.sub.32. In these drawings, (A) denotes a sectional view of a lens and (B) denotes various aberrations thereof.

DETAILED DESCRIPTION OF EMBODIMENTS
Embodiments of a lens system according to the present invention will be described hereinafter.
Embodiments 1 to 21 illustrate examples wherein a third lens L.sub.3 comprises a single lens or a cemented lens. Embodiments 1 to 8 and embodiments 9 to 10 illustrate examples which use two aspherical surfaces and three aspherical surfaces, respectively. Among them, in the embodiment 8, a third lens comprises a cemented lens for achromatism.
Embodiments 13, 15 and 18 to 21 includes some examples in which the displacement direction of the surface is not in accordance with the conditions (6) to (13) since aspherical surfaces are introduced into three surfaces. Among them, embodiments 18 to 21 are in accordance with the conditions (14) and (15).
In tables, R designates the radius of curvature; D, the spacing between refracting surfaces; N, the refractive index, .nu., the Abbe number; W, the angle of view; f.sub.B, the back-focus; K, the conical constant; A, the coefficient of an aspherical surface; and .SIGMA.D, the overall length of lens.
Embodiment 1
______________________________________f = 100 W = 35.6.degree. F 4.0______________________________________ R D N .nu.______________________________________1 26.826 9.33 1.62280 57.02 111.880 3.333 -95.275 2.67 1.84666 23.94 45.833 3.005 54.366 5.67 1.59270 35.36 -50.903 22.747 -14.991 3.33 1.69680 55.58 -18.930______________________________________Aspherical surface: 1 .DELTA.X.sub.1 (0.13f)/f = -0.3847 .times. 10.sup.-3______________________________________K = 0.0A1 = 6.65277D-04 P1 = 2.0000A2 = -2.42299D-07 P2 = 4.0000A3 = 4.24465D-10 P3 = 5.0000A4 = -7.61811D-10 P4 = 6.0000A5 = -2.55577D-11 P5 = 7.0000A6 = -5.76347D-13 P6 = 8.0000A7 = -1.10042D-14 P7 = 9.0000A8 = -1.92674D-16 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14f)/f = -0.3082 .times. 10.sup.-2______________________________________K = 0.0A1 = 2.50649D-03 P1 = 2.0000A2 = -6.34509D-06 P2 = 4.0000A3 = 8.66364D-07 P3 = 5.0000A4 = -2.78035D-08 P4 = 6.0000A5 = -2.07165D-10 P5 = 7.0000A6 = 2.17422D-12 P6 = 8.0000A7 = 7.11934D-13 P7 = 9.0000A8 = 1.13497D-14 P8 = 10.0000______________________________________f.sub.1.2.3 = 65.67 .SIGMA.D = 50.07f.sub.4 = -98.79 Telephoto ratio = 0.9269f.sub.B = 42.62______________________________________
Embodiment 2
______________________________________f = 100 W = 35.6.degree. F 4.0______________________________________ R D N .nu.______________________________________1 25.387 9.33 1.62280 57.02 44.798 3.333 -118.415 2.67 1.84666 23.94 45.426 3.005 55.596 5.67 1.59270 35.36 -59.948 22.757 -14.933 3.33 1.69680 55.58 -18.723______________________________________Aspherical surface: 2 .DELTA.X.sub.2 (0.13f)/f = 0.7589 .times. 10.sup.-3______________________________________K = 0.0A1 = -5.57204D-03 P1 = 2.0000A2 = 1.98838D-06 P2 = 4.0000A3 = -6.33022D-08 P3 = 5.0000A4 = 5.57988D-10 P4 = 6.0000A5 = 3.93575D-11 P5 = 7.0000A6 = 9.57151D-13 P6 = 8.0000A7 = 1.75406D-14 P7 = 9.0000A8 = 2.80037D-16 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14f)/f = -0.3020 .times. 10.sup.-2______________________________________K = 0.0A1 = 2.39772D-03 .beta.; = 2.0000A2 = -6.27124D-06 P2 = 4.0000A3 = 8.70726D-07 P3 = 5.0000A4 = -2.75923D-08 P4 = 6.0000A5 = -2.01539D-10 P5 = 7.0000A6 = 2.29204D-12 P6 = 8.0000A7 = 7.14090D-13 P7 = 9.0000A8 = 1.13852D-14 P8 = 10.0000______________________________________f.sub.1.2.3 = 66.48 .SIGMA.D = 50.08f.sub.4 = -103.30 Telephoto ratio = 0.9270f.sub.B = 42.62______________________________________
Embodiment 3
______________________________________f = 100 W = 35.5.degree. F 4.0______________________________________ R D N .nu.______________________________________1 22.778 9.33 1.62280 57.02 48.590 3.333 30.540 2.67 1.84666 23.94 40.528 3.005 43.424 5.67 1.59270 35.36 -37.816 18.407 -17.458 3.33 1.69680 55.58 -23.851______________________________________Aspherical surface: 3 .DELTA.X.sub.3 (0.1f)/f = -0.6483 .times. 10.sup.-3______________________________________K = 0.0A1 = -2.12847D-02 P1 = 2.0000A2 = -1.30628D-05 P2 = 4.0000A3 = 2.36300D-07 P3 = 5.0000A4 = 1.68427D-08 P4 = 6.0000A5 = -2.87031D-09 P5 = 7.0000A6 = 1.92758D-11 P6 = 8.0000A7 = 3.38873D-12 P7 = 9.0000A8 = 1.11824D-13 P8 = 10.0000______________________________________Asphrical surface: 8 .DELTA.X.sub.9 (0.14f)/f = -0.1117 .times. 10.sup.-2______________________________________K = 0.0A1 = 2.91382D-03 P1 = 2.0000A2 = -3.21450D-06 P2 = 4.0000A3 = 6.97411D-07 P3 = 5.0000A4 = -3.00678D-08 P4 = 6.0000A5 = -6.84978D-11 P5 = 7.0000A6 = 1.08261D-11 P6 = 8.0000A7 = 1.00543D-12 P7 = 9.0000A8 = 1.90681D-14 P8 = 10.0000______________________________________f.sub.1.2.3 = 59.56 .SIGMA.D = 45.73f.sub.4 = -78.21 Telephoto ratio = 0.9270f.sub.B = 46.97______________________________________
Embodiment 4
______________________________________f = 100 W = 24.4.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.314 9.33 1.62280 57.02 66.942 3.333 -115.005 2.67 1.84666 23.94 36.535 3.005 56.237 5.67 1.59270 35.36 -49.885 18.627 -15.016 3.33 1.69680 55.58 -19.209______________________________________Aspherical surface: 4 .DELTA.X.sub.4 (0.1f)/f = 0.3594 .times. 10.sup.-3______________________________________K = 0.0A1 = -2.48961D-03 P1 = 2.0000A2 = 1.76988D-06 P2 = 4.0000A3 = 5.84745D-08 P3 = 5.0000A4 = 2.19216D-10 P4 = 6.0000A5 = -5.40366D-12 P5 = 7.0000A6 = -1.34142D-13 P6 = 8.0000A7 = -1.99220D-15 P7 = 9.0000A8 = -2.43082D-17 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14f)/f = -0.2343 .times. 10.sup.-2______________________________________K = 0.0A1 = 2.01914D-03 P1 = 2.0000A2 = -3.57968D- 06 P2 = 4.0000A3 = 7.32965D-07 P3 = 5.0000A4 = -3.33395D-08 P4 = 6.0000A5 = -2.11258D-10 P5 = 7.0000A6 = 7.11969D-12 P6 = 8.0000A7 = 9.29020D-13 P7 = 9.0000A8 = 1.77127D-14 P8 = 10.0000______________________________________f.sub.1.2.3 = 64.38 .SIGMA.D = 45.95f.sub.4 = -101.08 Telephoto ratio = 0.9265f.sub.B = 46.70______________________________________
Embodiment 5
______________________________________f = 100 W = 35.7.degree. F 40______________________________________ R D N .nu.______________________________________1 23.512 9.33 1.62280 57.02 69.610 3.333 -101.022 2.67 1.84666 23.94 48.977 3.005 57.321 5.67 1.59270 35.36 -47.562 18.917 -15.594 3.33 1.69680 55.58 -19.700______________________________________Aspherical surface: 5 .DELTA.X.sub.5 (0.1f)/f = -0.5234 .times. 10.sup.-3______________________________________K = 0.0A1 = -9.59778D-04 P1 = 2.0000A2 = -5.64421D-06 P2 = 4.0000A3 = 1.47998D-08 P3 = 5.0000A4 = 5.45863D-10 P4 = 6.0000A5 = 6.87770D-12 P5 = 7.0000A6 = 6.77105D-14 P6 = 8.0000A7 = 5.88262D-16 P7 = 9.0000A8 = 4.69128D-18 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14f)/f = -0.2169 .times. 10.sup.-2______________________________________K = 0.0A1 = 2.42989D-03 P1 = 2.0000A2 = -3.87979D-06 P2 = 4.0000A3 = 8.02987D-07 P3 = 5.0000A4 = -3.21202D-08 P4 = 6.0000A5 = -2.05100D-10 P5 = 7.0000A6 = 6.81212D-12 P6 = 8.0000A7 = 9.15937D-13 P7 = 9.0000A8 = 1.73678D-14 P8 = 10.0000______________________________________f.sub.1.2.3 = 64.63 .SIGMA.D = 46.24f.sub.4 = -101.10 Telephoto ratio = 0.9270f.sub.B = 46.46______________________________________
Embodiment 6
______________________________________f = 100 W = 35.6.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.529 9.33 1.62280 57.02 66.399 3.333 -96.597 2.67 1.84666 23.94 49.246 3.005 55.134 5.67 1.59270 35.36 -46.736 19.487 -16.149 3.33 1.69680 55.58 -20.838______________________________________Aspherical surface: 5 .DELTA.X.sub.5 (0.1f)/f = -0.5681 .times. 10.sup.-3______________________________________K = 0.0A1 = -7.21411D-04 P1 = 2.0000A2 = -6.09173D-06 P2 = 4.0000A3 = 1.72427D-08 P3 = 5.0000A4 = 6.12968D-10 P4 = 6.0000A5 = 7.88608D-12 P5 = 7.0000A6 = 8.14185D-14 P6 = 8.0000A7 = 7.64055D-16 P7 = 9.0000A8 6.83360D-18 P8 = 10.0000______________________________________Aspherical surface: 7 .DELTA.X.sub.7 (0.13f)/f = 0.5235 .times. 10.sup.-2______________________________________K = 0.0A1 = -2.56164D-03 P1 = 2.0000A2 = -1.71989D-06 P2 = 4.0000A3 = -6.88711D-08 P3 = 5.0000A4 = -7.55129D-10 P4 = 6.0000A5 = -6.79709D-12 P5 = 7.0000A6 = -6.32490D-14 P6 = 8.0000A7 = -7.17730D-16 P7 = 9.0000A8 = -1.24750D-17 P8 = 10.0000______________________________________f.sub.1.2.3 = 64.08 .SIGMA.D = 46.81f.sub.4 = -97.95 Telephoto ratio = 0.9272f.sub.B = 45.91______________________________________
Embodiment 7
______________________________________f = 100 W = 35.7.degree. F 4.0______________________________________ R D N .nu.______________________________________1 24.967 9.33 1.62280 57.02 73.358 3.333 -81.702 2.67 1.84666 23.94 52.896 3.005 51.170 5.67 1.59270 35.36 -36.000 22.207 -16.128 3.33 1.69680 55.58 -20.919______________________________________Aspherical surface: 6 .DELTA.X.sub.6 (0.1f)/f = 0.4116 .times. 10.sup.-3______________________________________K = 0.0A1 = 3.47895D-03 P1 = 2.0000A2 = 8.45750D-06 P2 = 4.0000A3 = -2.95562D-07 P3 = 5.0000A4 = 1.52616D-09 P4 = 6.0000A5 = 8.02617D-11 P5 = 7.0000A6 = 1.37894D-12 P6 = 8.0000A7 = 1.78975D-14 P7 = 9.0000A8 = 2.02767D-16 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14f)/f = -0.1997 .times. 10.sup.-2______________________________________K = 0.0A1 = 2.56464D-03 P1 = 2.0000A2 = -5.06717D-06 P2 = 4.0000A3 = 8.33672D-07 P3 = 5.0000A4 = -2.90143D-08 P4 = 6.0000A5 = -2.33228D-10 P5 = 7.0000A6 = 1.77498D-12 P6 = 8.0000A7 = 7.08209D-13 P7 = 9.0000A8 = 1.13688D-14 P8 = 10.0000______________________________________f.sub.1.2.3 = 64.21 .SIGMA.D = 49.53f.sub.4 = -91.38 Telephoto ratio: 0.9271f.sub.B = 43.18______________________________________
Embodiment 8
______________________________________f = 100 W = 35.7.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.422 9.33 1.62280 57.02 70.625 3.333 -93.604 2.67 1.84666 23.94 46.465 3.005 56.339 4.50 1.59270 35.36 -31.977 1.17 1.74950 35.37 -42.929 18.958 -15.685 3.33 1.69680 55.59 -20.130______________________________________Aspherical surface: 5 .DELTA.X.sub.5 (0.1f)/f = -0.4670 .times. 10.sup.-3______________________________________K = 0.0A1 = 4.94611D-05 P1 = 2.0000A2 = -4.87911D-06 P2 = 4.0000A3 = 1.71412D-08 P3 = 5.0000A4 = 4.46202D-10 P4 = 6.0000A5 = 4.61797D-12 P5 = 7.0000A6 = 3.48215D-14 P6 = 8.0000A7 = 1.86574D-16 P7 = 9.0000A8 = 2.30924D-19 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X.sub.9 (0.14f)/f = -0.1948 .times. 10.sup.-2______________________________________K = 0.0A1 = 2.35661D-03 P1 = 2.0000A2 = -3.60474D- 06 P2 = 4.0000A3 = 7.93398D-07 P3 = 5.0000A4 = -3.28026D-08 P4 = 6.0000A5 = -2.29990D-10 P5 = 7.0000A6 = 6.11902D-12 P6 = 8.0000A7 = 8.99651D-13 P7 = 9.0000A8 = 1.70282D-14 P8 = 10.0000______________________________________f.sub.1.2.3.4 = 63.77 .SIGMA.D = 46.28f.sub.5 = -96.52 Telephoto ratio = 0.9269f.sub.B = 46.41______________________________________
Embodiment 9
______________________________________f = 100 W = 35.8.degree. F 4.0______________________________________ R D N .nu.______________________________________1 24.634 6.47 1.56883 56.32 102.309 3.233 -76.314 1.62 1.80518 25.44 80.929 6.105 75.546 3.87 1.60717 40.36 -50.333 20.527 -17.200 2.50 1.63854 55.49 -24.098______________________________________Aspherical surface: 4 .DELTA.X.sub.4 (0.1f)/f = 0.1555 .times. 10.sup.-3______________________________________K = 0.0A1 = 8.69939D-04 P1 = 2.0000A2 = 1.38421D-06 P2 = 4.0000A3 = 2.85950D-09 P3 = 6.0000A4 = 4.72626D-14 P4 = 8.0000A5 = -3.15977D-17 P5 = 10.0000______________________________________Aspherical surface: 6 .DELTA.X.sub.6 (0.1f)/f = 0.3305 .times. 10.sup.-4______________________________________K = 0.0A1 = -3.97745D-04 P1 = 2.0000A2 = 4.86804D-07 P2 = 4.0000A3 = -2.78992D-09 P3 = 6.0000A4 = -4.10665D-13 P4 = 8.0000A5 = -4.31447D-17 P5 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.9 (0.14f)/f = -0.9116 .times. 10.sup.-3______________________________________K = 0.0A1 = 2.67076D-03 P1 = 2.0000A2 = 1.84476D-06 P2 = 4.0000A3 = -9.06308D-10 P3 = 6.0000A4 = 1.58951D-13 P4 = 8.0000A5 = -6.06220D-17 P5 = 10.0000______________________________________f.sub.1.2.3 = 59.79 .SIGMA.D = 44.30f.sub.4 = -78.56 Telephoto ratio = 0.9269f.sub.B = 48.39______________________________________
Embodiment 10
______________________________________f = 100 W = 36.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 24.574 6.47 1.56883 56.32 97.945 3.233 -73.212 1.62 1.80518 25.44 80.620 6.105 76.396 3.87 1.60717 40.36 -50.391 20.527 -17.153 2.50 1.63854 55.48 -23.722______________________________________Aspherical surface: 5 .DELTA.X.sub.5 (0.1f)/f = -0.1358 .times. 10.sup.-3______________________________________K = 0.0A1 = -2.54556D-04 P1 = 2.0000A2 = -1.39147D-06 P2 = 4.0000A3 = 1.17392D-11 P3 = 6.0000A4 = 7.41638D-15 P4 = 8.0000A5 = 7.47286D-19 P5 = 10.0000______________________________________Aspherical surface: 6 .DELTA..sub.6 (0.1f)/f = 0.6461 .times. 10.sup.-4______________________________________K = 0.0A1 = -1.07394D-04 P1 = 2.0000A2 = 5.94152D-07 P2 = 4.0000A3 = 1.85550D-10 P3 = 6.0000A4 = 1.85067D-14 P4 = 8.0000A5 = 1.92440D-18 P5 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.14 (0.14f)/f = -0.98884 .times. 10.sup.-3______________________________________K = 0.0A1 = 2.76633D-03 P1 = 2.00000A2 = 2.21084D-06 P2 = 4.0000A3 = -1.94200D-09 P3 = 6.0000A4 = -1.18246D-12 P4 = 8.0000______________________________________f.sub.1.2.3 = 60.20 .SIGMA.D = 44.30f.sub.4 = -79.91 Telephoto ratio = 0.9260f.sub.B = 48.30______________________________________
Embodiment 11
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 25.317 8.33 1.60311 60.72 54.926 3.243 -53.996 1.62 1.84666 23.94 93.997 3.645 72.903 6.33 1.62004 36.36 -48.558 21.797 -17.232 2.59 1.51633 64.18 -28.060______________________________________Aspherical surface: 1 .DELTA.X.sub.1 (0.13f)/f = -0.9740 .times. 10.sup.-4______________________________________K = -2.08874D-02A1 = 5.04143D-05 P1 = 2.0000A2 = -3.18772D-08 P2 = 4.0000A3 = -1.31991D-09 P3 = 5.0000A4 = -2.03248D-12 P4 = 6.0000A5 = 2.46655D-13 P5 = 7.0000A6 = 6.24844D-15 P6 = 8.0000A7 = 1.12941D-16 P7 = 9.0000A8 = 1.81086D-18 P8 = 10.0000______________________________________Aspherical surface: 3 .DELTA.X.sub.3 (0.1f)/f = -0.2425 .times. 10.sup.-3______________________________________K = -2.49709D-02A1 = 3.32366D-03 P1 = 2.0000A2 = -6.76348D-07 P2 = 4.0000A3 = -1.71935D-07 P3 = 5.0000A4 = 3.60669D-09 P4 = 6.0000A5 = 1.45611D-10 P5 = 7.0000A6 = 3.31067D-12 P6 = 8.0000A7 = 6.56682D-14 P7 = 9.0000A8 = 1.26619D-15 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14f)/f = -0.1090 .times. 10.sup.-2______________________________________K = -1.11373D+00A1 = 9.91453D-04 P; = 2.0000A2 = -5.21808D-06 P2 = 3.0000A3 = -5.26807D-06 P3 = 4.0000A4 = -2.10519D-07 P4 = 5.0000A5 = 7.66812D-10 P5 = 6.0000A6 = 4.91284D-11 P6 = 7.0000A7 = -1.09041D-11 P7 = 8.0000A8 = -1.40019D-13 P8 = 9.0000A9 = -7.26174D-15 P9 = 10.0000______________________________________ f.sub.1.2.3 = 62.98 f.sub.4 = -85.48 f.sub.B = 45.88 .SIGMA.D = 47.54 Telephoto ratio = 0.9342______________________________________
Embodiment 12
______________________________________f = 100 W = 35.1.degree. F 4.0______________________________________ R D N .nu.______________________________________1 25.319 8.33 1.60311 60.72 55.604 3.243 -54.142 1.62 1.84666 23.94 97.828 3.645 73.446 6.33 1.62004 36.36 -47.656 21.797 -17.234 2.59 1.51633 64.18 -28.121______________________________________Aspherical surface: 2 .DELTA.X.sub.2 (0.13 f)/f = 0.1027 .times. 10.sup.-3______________________________________K = 3.47226D-02A1 = 1.56933D-04 P1 = 2.0000A2 = 3.64147D-07 P2 = 4.0000A3 = 1.04115D-09 P3 = 5.0000A4 = -1.82768D-11 P4 = 6.0000A5 = -4.66723D-13 P5 = 7.0000A6 = -7.46477D-15 P6 = 8.0000A7 = -1.02910D-16 P7 = 9.0000A8 = -1.32340D-18 P8 = 10.0000______________________________________Ashperical surface: 3 .DELTA.X.sub.3 (0.1 f)f = -0.2519 .times. 10.sup.-3______________________________________K = -1.13649D-02A1 = 3.08014D-03 P1 = 2.0000A2 = -7.50059D-07 P2 = 4.0000A3 = -1.75167D-07 P3 = 5.0000A4 = 3.54366D-09 P4 = 6.0000A5 = 1.44689D-10 P5 = 7.0000A6 = 3.29891D-12 P6 = 8.0000A7 = 6.56684D-14 P7 = 9.0000A8 = 1.26464D-15 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = -0.1022 .times. 10.sup.-2______________________________________K = -1.14811D+00A1 = 1.00135D-03 P1 = 2.0000A2 = -5.21808D-06 P2 = 3.0000A3 = -5.21873D-06 P3 = 4.0000A4 = -2.10519D-07 P4 = 5.0000A5 = 7.28388D-10 P5 = 6.0000A6 = 4.91285D-11 P6 = 7.0000A7 = -1.08772D-11 P7 = 8.0000A8 = -1.40019D-13 P8 = 9.0000A9 = -7.24171D-15 P9 = 10.0000______________________________________ f.sub.1.2.3 = 62.82 f.sub.4 = -85.13 f.sub.B = 46.03 .SIGMA..sub.D = 47.54 Telephoto ratio = 0.9357______________________________________
Embodiment 13
______________________________________f = 100 W = 35.1.degree. F 4.0______________________________________ R D N .nu.______________________________________1 24.480 8.33 1.60311 60.72 54.317 3.243 -50.564 1.62 1.84666 23.94 74.154 3.645 70.278 6.33 1.62004 36.36 -51.826 21.777 -16.427 2.59 1.49200 55.08 -24.450______________________________________Aspherical surface: 3 .DELTA.X.sub.3 (0.1 f)/f = -0.2868 .times. 10.sup.-3______________________________________K = 2.97195D-02A1 = 4.98558D-03 P1 = 2.0000A2 = -1.11677D-03 P2 = 4.0000A3 = -1.45536D-07 P3 = 5.0000A4 = 4.08159D-09 P4 = 6.0000A5 = 1.51845D-10 P5 - 7.0000A6 = 3.38403D-12 P6 = 8.0000A7 = 6.67456D-14 P7 = 9.0000A8 = 1.27504D-15 P8 = 10.0000______________________________________Aspherical surface: 7 .DELTA.X.sub.7 (0.13 f)/f = 0.6270 .times. 10.sup.-2______________________________________K = -7.81760D-02A1 = -2.37403D-03 P1 = 2.0000A2 = -7.21552D-07 P2 = 4.0000A3 = -1.08063D-08 P3 = 5.0000A4 = -1.17586D-10 P4 = 6.0000A5 = -7.95713D-13 P5 = 7.0000A6 = 2.52428D-15 P6 = 8.0000A7 = 5.23919D-18 P7 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = 0.8709 .times. 10.sup.-3______________________________________K = -1.09095D+00A1 = -5.34482D-05 P1 = 2.0000A2 = -5.21884D-06 P2 = 3.0000A3 = -5.28634D-06 P3 = 4.0000A4 = -2.10520D-07 P4 = 5.0000A5 = 5.27104D-10 P5 = 6.0000A6 = 4.91287D-11 P6 = 7.0000A7 = -1.10169D-11 P7 = 8.0000A8 = -1.40020D-13 P8 = 9.0000A9 = -7.29674D-15 P9 = 10.0000______________________________________ f.sub.1.2.3 = 64.2 f.sub.4 = -91.06 f.sub.B = 45.67 .SIGMA..sub.D = 47.52 Telephoto ratio = 0.9319______________________________________
Embodiment 14
______________________________________f = 100 W = 35.1.degree. F 4.0______________________________________ R D N .nu.______________________________________1 21.433 7.39 1.51633 64.12 65.752 2.873 -60.623 1.43 1.75520 27.54 49.645 3.235 53.884 5.61 1.62004 36.36 -48.565 18.637 -15.629 2.30 1.51633 64.18 -27.375______________________________________Aspherical surface: 3 .DELTA.X.sub.3 (0.1 f)/f = -0.1034 .times. 10.sup.-3______________________________________K = -3.72924D-02A1 = 1.08233D-03 P1 = 2.0000A2 = -2.81942D-05 P2 = 3.0000A3 = 4.22689D-06 P3 = 4.0000A4 = -2.75472D-07 P4 = 5.0000A5 = 2.36734D-09 P5 = 6.0000A6 = 1.9-291D-10 P6 = 7.0000A7 = 5.02400D-12 P7 = 8.0000A8 = 1.02079D-13 P8 = 9.0000A9 = 1.85997D-15 P9 = 10.0000______________________________________Aspherical surface: 5 .DELTA.X.sub.5 (0.1 f)/f = -0.2291 .times. 10.sup.______________________________________ -3K = -1.95486D-01A1 = 6.71218D-04 P1 = 2.0000A2 = -1.57691D-06 P2 = 4.0000A3 = -3.10099D-08 P3 = 5.0000A4 = -4.47223D-10 P4 = 6.0000A5 = -5.43492D-12 P5 = 7.0000A6 = -5.85634D-14 P6 = 8.0000A7 = -4.99232D-18 P7 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = -0.1462 .times. 10.sup.-2______________________________________K = -8.22201D-02A1 = -1.61780D-03 P1 = 2.0000A2 = -3.21257D-05 P2 = 3.0000A3 = -2.63779D-07 P3 = 4.0000A5 = -1.57399D-09 P5 = 6.0000A6 = 7.99701D-11 P6 = 7.0000A7 = -2.07092D-11 P7 = 8.0000A8 = -5.72539D-14 P8 = 9.0000A9 = -8.36360D-15 P9 = 10.0000______________________________________ f.sub.1.2.3 = 60.91 f.sub.4 = -87.12 f.sub. B = 51.54 .SIGMA..sub.D = 41.46 Telephoto ratio = 0.93______________________________________
Embodiment 15
______________________________________f = 100 W = 35.6.degree. F 4.0______________________________________ R D N .nu.______________________________________1 30.501 5.71 1.51633 64.12 69.875 2.863 -72.993 1.43 1.80518 25.44 113.934 5.385 57.428 3.43 1.62004 36.36 -59.075 18.807 -15.114 2.28 1.69680 55.58 -31.924______________________________________Aspherical surface: 1 .DELTA.X.sub.1 (0.13 f)/f = -0.3860 .times. 10.sup.-3______________________________________K = 3.16046D-01A1 = 6.03290D-03 P1 = 2.0000A2 = -1.84034D-05 P2 = 3.0000A3 = 7.06936D-06 P3 = 4.0000A4 = -1.28109D-07 P4 = 5.0000A5 = 1.02274D-08 P5 = 6.0000A6 = 1.41472D-10 P6 = 7.0000A7 = -4.26684D-12 P7 = 8.0000A8 = -2.63690D-13 P8 = 9.0000A9 = -8.49444D-15 P9 = 10.0000______________________________________Aspherical surface: 3 .DELTA.X.sub.3 (0.1 f)/f = -0.8480 .times. 10.sup.-4______________________________________K = -2.19536D-01A1 = -9.30227D-04 P1 = 2.0000A2 = 5.16582D-07 P2 = 4.0000A3 = 6.96729D-11 P3 = 5.0000A4 = 7.65852D-10 P4 = 6.0000A5 = 2.47858D-11 P5 = 7.0000A6 = 5.05066D-13 P6 = 8.0000A7 = 1.25172D-16 P7 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = -0.1330 .times. 10.sup.-2______________________________________K = -2.80651D-01A1 = -6.32976D-03 P1 = 2.0000A2 = -2.44603D-05 P2 = 3.0000A3 = -8.09074D-06 P3 = 4.0000A4 = 7.85866D-09 P4 = 5.0000A5 = -7.82262D-09 P5 = 6.0000A6 = -3.42867D-10 P6 = 7.0000A7 = -3.40960D-11 P7 = 8.0000A8 = -3.57922D-13 P8 = 9.0000A9 = -1.26223D-14 P9 -10.0000______________________________________ f.sub.1.2.3 = 56.55 f.sub.4 = -73.79 f.sub.B = 52.12 .SIGMA..sub.D = 39.89 Telephoto ratio: = 0.9201______________________________________
Embodiment 16
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 25.320 9.33 1.60311 60.72 55.337 3.243 -54.130 1.62 1.84666 23.94 96.987 3.645 73.386 6.33 1.62004 36.36 -47.064 21.797 -17.232 2.59 1.51633 64.18 -27.933______________________________________Aspherical surface: 3 .DELTA.X.sub.3 (0.1 f)/f = -0.2542 .times. 10.sup.-3______________________________________K = -7.80476D-03A1 = 3.15832D-03 P1 = 2.0000A2 = -7.66356D-07 P2 = 4.0000A3 = -1.74668D-07 P3 = 5.0000A4 = 3.54579D-09 P4 = 6.0000A5 = 1.44634D-10 P5 = 7.0000A6 = 3.29743D-12 P6 = 8.0000A7 = 6.57642D-14 P7 = 9.0000A8 = 1.26429D-15 P8 = 10.0000______________________________________Aspherical surface: 6 .DELTA.X.sub.6 (0.1 f)/f = 0.8300 .times. 10.sup.-5______________________________________K = -2.47636D-02A1 = 3.30124D-04 P1 = 2.0000A2 = 1.17172D-07 P2 = 4.0000A3 = 3.92609D-09 P3 = 5.0000A4 = 7.15251D-11 P4 = 6.0000A5 = 1.02301D-12 P5 = 7.0000A6 = 1.29894D-14 P6 = 8.0000A7 = 1.75108D-18 P7 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = -0.9197 .times. 10.sup.-3______________________________________K = -1.16547D+00A1 = 1.00707D-03 P1 = 2.0000A2 = -5.21807D-06 P2 = 3.0000A3 = -5.18492D-06 P3 = 4.0000A4 = -2.10518D-07 P4 = 5.0000A5 = 7.36724D-10 P5 = 6.0000A6 = 4.91282D-11 P6 = 7.0000A7 = -1.08889D-11 P7 = 8.0000A8 = -1.40018D-13 P8 = 9.0000A9 = -7.25212D-15 P9 = 10.0000______________________________________ f.sub.1.2.3 = 63.06 f.sub.4 = -86.01 f.sub.B = 45.99 .SIGMA..sub.D = 47.54 Telephoto ratio = 0.9353______________________________________
Embodiment 17
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 25.480 8.33 1.60311 60.72 55.830 3.243 -54.325 1.62 1.84666 23.94 101.538 3.645 73.231 6.33 1.62004 36.36 -46.972 21.797 -17.212 2.59 1.51633 64.18 -28.395______________________________________Aspherical surface: 3 .DELTA.X.sub.3 (0.1 f)/f = -0.2620 .times. 10.sup.-3______________________________________K = 0.0A1 = 2.76615D-03 P1 = 2.0000A2 = -8.32861D-07 P2 = 4.0000A3 = -1.79476D-07 P3 = 5.0000A4 = 3.47366D-09 P4 = 6.0000A5 = 1.43781D-10 P5 = 7.0000A6 = 3.28820D-12 P6 = 8.0000A7 = 6.56684D-14 P7 = 9.0000A8 = 1.26333D-15 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = -0.9836 .times. 10.sup.-3______________________________________K = -1.19788D+00A1 = 1.01475D-03 P1 = 2.0000A2 = -5.21808D-06 P2 = 3.0000A3 = -5.16207D-06 P3 = 4.0000A4 = -2.10519D-07 P4 = 5.0000A5 = 7.04564D-10 P5 = 6.0000A6 = 4.91285D-11 P6 = 7.0000A7 = -1.08790D-11 P7 = 8.0000A8 = -1.40019D-13 P8 = 9.0000A9 = -7.23875D-15 P9 = 10.0000______________________________________f.sub.1.2.3 = 62.42 .SIGMA..sub.D = 47.54f.sub.4 = -83.44 Telephoto ratio = 0.9349f.sub.B = 45.95______________________________________
Embodiment 18
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 26.113 8.31 1.60311 60.72 52.142 3.393 -84.056 2.03 1.84666 23.94 53.858 3.055 46.093 7.46 1.63636 35.46 -54.212 27.387 -17.199 2.71 1.49200 55.08 -18.298______________________________________Aspherical surface: 4 .DELTA.X.sub.4 (0.10 f)/f = 0.3665 .times. 10.sup.-3______________________________________K = 7.25553D-01A1 = -1.89353D-03 P1 = 2.0000A2 = 1.63112D-06 P2 = 4.0000A3 = 1.28730D-07 P3 = 5.0000A4 = -1.17176D-09 P4 = 6.0000A5 = -8.02144D-11 P5 = 7.0000A6 = -1.69432D-12 P6 = 8.0000A7 = -2.66045D-14 P7 = 9.0000A8 = -3.69440D-16 P8 = 10.0000______________________________________Aspherical surface: 7 .DELTA.X.sub.7 (0.13 f)/f = 0.2888 .times. 10.sup.-1______________________________________K = -3.03103D-02A1 = -8.34305D-03 P1 = 2.0000A2 = 2.10702D-06 P2 = 4.0000A3 = 1.17386D-07 P3 = 5.0000A4 = -5.49590D-09 P4 = 6.0000A5 = -1.94141D-10 P5 = 7.0000A6 = -4.16296D-12 P6 = 8.0000A7 = -7.41826D-14 P7 = 9.0000A8 = -1.19214D-15 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = 0.5645 .times. 10.sup.-2______________________________________K = -1.31433D+00A1 = 3.75089D-03 P1 = 2.0000A2 = -5.87355D-06 P2 = 4.0000A3 = -9.92000D-08 P3 = 5.0000A4 = -2.54945D-09 P4 = 6.0000A5 = -2.21999D-11 P5 = 7.0000A6 = -7.18024D-12 P6 = 8.0000A7 = 6.55420D-14 P7 = 9.0000A8 = 9.02696D-16 P8 = 10.0000______________________________________ f.sub.1.2.3 = 64.63 f.sub.4 = -82.88 f.sub.B = 39.82 .SIGMA..sub.D = 54.33 Telephoto ratio: 0.9415______________________________________
Embodiment 19
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 25.548 8.19 1.60311 60.72 52.055 3.343 -84.113 2.00 1.84666 23.94 53.641 3.015 45.062 7.35 1.63636 35.46 -53.161 25.987 -16.964 2.67 1.49200 55.08 -19.364______________________________________Aspherical surface: 4 .DELTA.X.sub.4 (0.10 f)/f = 0.3764 .times. 10.sup.-3______________________________________K = 7.25325D-01A1 = -1.31967D-03 P1 = 2.0000A2 = 1.74110D-06 P2 = 4.0000A3 = 1.34599D-07 P3 = 5.0000A4 = -1.34157D-09 P4 = 6.0000A5 = -8.89012D-11 P5 = 7.0000A6 = -1.89352D-12 P6 = 8.0000A7 = -3.00895D-14 P7 = 9.0000A8 = -4.23323D-16 P8 = 10.0000______________________________________Aspherical surface: 7 .DELTA.X.sub.7 (0.13 f)/f = 0.1636 .times. 10.sup.-1______________________________________K = -4.66942D-02A1 = -5.79375D-03 P1 = 2.0000A2 = 2.65155D-06 P2 = 4.0000A3 = 1.40033D-07 P3 = 5.0000A4 = -5.61910D-09 P4 = 6.0000A5 = -2.07345D-10 P5 = 7.0000A6 = -4.54632D-12 P6 = 8.0000A7 = -8.25215D-14 P7 = 9.0000A8 = -1.34896D-15 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = 0.3809 .times. 10.sup.-2______________________________________K = -1.34941D+00A1 = 4.08619D-03 P1 = 2.0000A2 = -5.98342D-06 P2 = 4.0000A3 = -1.11390D-07 P3 = 5.0000A4 = -2.73571D-09 P4 = 6.0000A5 = -1.87242D-11 P5 = 7.0000A6 = -7.72103D-12 P6 = 8.0000A7 = 8.06903D-14 P7 = 9.0000A8 = 1.21083D-15 P8 = 10.0000______________________________________ f.sub.1.3. = 63.97 f.sub.4 = -83.42 f.sub.B = 41.49 .SIGMA..sub.D = 52.54 Telephoto ratio = 0.9403______________________________________
Embodiment 20
______________________________________f = 100 W = 35,0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 25.456 8.33 1.60311 60.72 51.919 3.173 -83.159 2.00 1.84666 23.94 53.357 3.005 44.786 7.33 1.63636 35.46 -52.854 25.917 -16.932 2.67 1.49200 55.08 -19.318______________________________________Aspherical surface: 4 .DELTA.X.sub.4 (0.10 f)/f = 0.3797 .times. 10.sup.-3______________________________________K = 7.27756D-01A1 = -1.32518D-03 P1 = 2.0000A2 = 1.80317D-06 P2 = 4.0000A3 = 1.29636D-07 P3 = 5.0000A4 = -1.31328D-09 P4 = 6.0000A5 = -8.80417D-11 P5 = 7.0000A6 = -1.88673D-12 P6 = 8.0000A7 = -3.01311D-14 P7 = 9.0000A8 = -4.25894D-16 P8 = 10.0000______________________________________Aspherical surface: 7 .DELTA.X.sub.7 (0.13 f)/f = 0.1915 .times. 10.sup.-1______________________________________K = -3.21404D-02A1 = -6.40550D-03 P1 = 2.0000A2 = 2.42588D-06 P2 = 4.0000A3 = 1.34860D-07 P3 = 5.0000A4 = -5.85913D-09 P4 = 6.0000A5 = -2.13561D-10 P5 = 7.0000A6 = -4.67139D-12 P6 = 8.0000A7 = -8.47291D-14 P7 = 9.0000A8 = -1.38483D-15 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = 0.4093 .times. 10.sup.-2______________________________________K = -1.33261D+00A1 = 3.68391D-03 P1 = 2.0000A2 = -5.94307D-06 P2 = 4.0000A3 = -1.12697D-07 P3 = 5.0000A4 = -2.86277D-09 P4 = 6.0000A5 = -2.51163D-11 P5 = 7.0000A6 = -8.08864D-12 P6 = 8.0000A7 = 7.50480D-14 P7 = 9.0000A8 = 1.04768D-15 P8 = 10.0000______________________________________ f.sub.1.2.3 = 63.86 f.sub.4 = -82.40 f.sub.B = 41.42 .SIGMA..sub.D = 52.41 Telephoto ratio = 0.9383______________________________________
Embodiment 21
______________________________________f = 100 W = 34.8.degree. F 4.0______________________________________ R D N .nu.______________________________________1 26.201 8.34 1.60311 60.72 52.395 3.403 -84.495 2.04 1.84666 23.94 54.121 3.065 46.243 7.49 1.63636 35.46 -54.233 27.487 -17.268 2.72 1.49200 55.08 -18.407______________________________________Aspherical surface: 4 .DELTA.X.sub.4 (0.10 f)/f = 0.3696 .times. 10.sup.-3______________________________________K = 7.25658D-01A1 = -1.83166D-03 P1 = 2.0000A2 = 1.65603D-06 P2 = 4.0000A3 = 1.26256D-07 P3 = 5.0000A4 = -1.16131D-09 P4 = 6.0000A5 = -7.85177D-11 P5 = 7.0000A6 = -1.65031D-12 P6 = 8.0000A7 = -2.58014D-14 P7 = 9.0000A8 = -3.56798D-16 P8 = 10.0000______________________________________Aspherical surface: 7 .DELTA.X.sub.7 (0.13 f)/f = 0.2822 .times. 10.sup.-1______________________________________K = -2.90324D-02A1 = -8.22825D-03 P1 = 2.0000A2 = 2.11074D-06 P2 = 4.0000A3 = 1.16238D-07 P3 = 5.0000A4 = -5.37651D-09 P4 = 6.0000A5 = -1.89416D-10 P5 = 7.0000A6 = -4.04697D-12 P6 = 8.0000A7 = -7.18433D-14 P7 = 9.0000A8 = -1.15012D-15 P8 = 10.0000______________________________________Aspherical surface: 8 .DELTA.X.sub.8 (0.14 f)/f = 0.5569 .times. 10.sup.-2______________________________________K = -1.31094D+00A1 = 3.70784D-03 P1 = 2.0000A2 = -5.84832D-06 P2 = 4.0000A3 = -9.85714D-18 P3 = 5.0000A4 = -2.50923D-09 P4 = 6.0000A5 = -2.16196D-11 P5 = 7.0000A6 = -6.97822D-12 P6 = 8.0000A7 = 6.37312D-14 P7 = 9.0000A8 = 8.77321D-16 P8 = 10.0000______________________________________ f.sub.1.2.3 = 63.48 f.sub.4 = -83.56 f.sub.B = 39.77 .SIGMA..sub.D = 54.55 Telephoto ratio = 0.9432______________________________________
Embodiments 22 to 32 show examples wherein the third positive lens L.sub.3 comprises two positive lenses L.sub.31 and L.sub.32.
In Embodiments 31 and 32, both surfaces of the fourth lens L.sub.4 have their curvature which is gentler outside the axis than the surface of paraxial radius of curvature. This design is made to make comatic aberration flat at an angle of view of 28.degree. or more. If the object side is greatly displaced, the comatic aberration can be restrained but the image surface curve is short in compensation. Therefore, if the image side is likewise displaced so as to make the curvature gentle outside the axis, the comatic aberration becomes also flat, and the image surface curve can be also compensated.
Embodiment 22
______________________________________f = 100 W = 35.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.338 8.33 1.58913 61.02 47.542 3.233 -63.764 1.67 1.84666 23.94 60.832 0.815 92.977 2.67 1.49200 55.0 (resin)6 1212.959 0.337 74.073 6.17 1.69895 30.18 -48.011 21.799 -15.396 2.67 1.49200 55.0 (resin)10 -22.856______________________________________Aspherical surface: 5 .DELTA.X(0.10 f) = -0.52375 .times. 10.sup.-3______________________________________K = -1.71074D-01A1 = 4.92612D-05 P1 = 2.0000A2 = -4.88022D-06 P2 = 4.0000A3 = -2.39993D-08 P3 = 5.0000A4 = -7.78213D-10 P4 = 6.0000A5 = -7.49195D-12 P5 = 7.0000A6 = -6.60661D-14 P6 = 8.0000A7 = -5.33783D-16 P7 = 9.0000A8 = -3.81073D-18 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f) = 0.64918 .times. 10.sup.-2______________________________________K = -2.25565D- 01A1 = -2.76275D-04 P1 = 2.0000A2 = 5.53218D-07 P2 = 4.0000A3 = -1.45347D-08 P3 = 5.0000A4 = -1.98010D-10 P4 = 6.0000A5 = -3.50886D-12 P5 = 7.0000A6 = -4.52550D-14 P6 = 8.0000A7 = -5.55003D-18 P7 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f) = 0.89980 .times. 10.sup.-3______________________________________K = -3.13835D-01A1 = 2.10215D-03 P1 = 2.0000A2 = 1.53184D-06 P2 = 4.0000A3 = -3.92676D-10 P3 = 6.0000A4 = -7.08901D-13 P4 = 8.0000A5 = -3.34634D-16 P5 = 10.0000______________________________________f.sub.123 = 62.49 f.sub.4 = -85.84f.sub.B = 46.58.SIGMA.D = 47.67 Telephoto ratio = 0.9425______________________________________
Embodiment 23
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 24.659 8.33 1.69680 55.52 42.578 3.233 -67.819 1.67 1.84666 23.94 52.381 0.815 76.727 2.67 1.49200 55.0 (resin)6 -575.910 0.337 111.667 6.17 1.72825 28.58 -55.350 21.799 -14.943 2.67 1.49200 55.0 (resin)10 -20.160______________________________________Aspherical surface: 5 .DELTA.X(0.10 f) = -0.34505 .times. 10.sup.-3______________________________________K = -1.30820D-01A1 = 3.39173D-03 P1 = 2.0000A2 = -2.73359D-06 P2 = 4.0000A3 = 6.23249D-09 P3 = 5.0000A4 = -2.92059D-10 P4 = 6.0000A5 = -3.70598D-13 P5 = 7.0000A6 = 2.94720D-14 P6 = 8.0000A7 = 6.71573D-16 P7 = 9.0000A8 = 1.07603D-17 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f) = 0.45674 .times. 10.sup.-2______________________________________K = -1.45031D-01A1 = 1.52471D-04 P1 = 2.0000A2 = 1.27500D-06 P2 = 4.0000A3 = -3.38225D-08 P3 = 5.0000A4 = -5.54289D-10 P4 = 6.0000A5 = -7.81470D-12 P5 = 7.0000A6 = -8.70558D-14 P6 = 8.0000A7 = -6.64214D-18 P7 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f) = -0.46241 .times. 10.sup.-3______________________________________K = -2.14717D-01A1 = 3.42646D-03 P1 = 2.0000A2 = 1.74579D-06 P2 = 4.0000A3 = 1.44675D-10 P3 = 6.0000A4 = -8.01771D-13 P4 = 8.0000A5 = -4.26004D-16 P5 = 10.0000______________________________________f.sub.123 = 64.58 f.sub.4 = -95.16f.sub.B = 46.62.SIGMA.D = 47.67 Telephoto ratio = 0.9429______________________________________
Embodiment 24
______________________________________f = 100 W = 35.1.degree. F 4.0______________________________________ R D N .nu.______________________________________1 24.161 8.33 1.62041 60.32 55.286 3.233 -72.620 1.67 1.84666 23.94 48.792 0.815 56.205 2.67 1.49200 55.0 (RESIN)6 102.794 0.337 60.098 6.17 1.69895 30.18 -50.252 21.849 -16.068 2.67 1.49200 55.0 (resin)10 -22.965______________________________________Aspherical surface: 6 .DELTA.X(0.10 f) = 0.40965 .times. 10.sup.-3______________________________________K = 4.66658D-02A1 = 9.94571D-04 P1 = 2.0000A2 = 3.90452D-06 P2 = 4.0000A3 = 2.85712D-08 P3 = 5.0000A4 = -1.57715D-10 P4 = 6.0000A5 = 2.47038D-12 P5 = 7.0000A6 = 8.06277D-14 P6 = 8.0000A7 = 1.45368D-15 P7 = 9.0000A8 = 2.14475D-17 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f) = -0.23332 .times. 10.sup.-4______________________________________K = 1.37436D-03A1 = -4.31652D-06 P1 = 2.0000A2 = 8.26933D-10 P2 = 4.0000A3 = 1.23673D-11 P3 = 5.0000A4 = 2.13704D-13 P4 = 6.0000A5 = 3.51398D-15 P5 = 7.0000A6 = 5.25111D-17 P6 = 8.0000A7 = 9.19426D-21 P7 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f) = -0.20773 .times. 10.sup.-2______________________________________K = 9.69262D-02A1 = 2.57038D-03 P1 = 2.0000A2 = 5.02112D-07 P2 = 4.0000A3 = 2.69935D-08 P3 = 5.0000A4 = -4.21703D-10 P4 = 6.0000A5 = -7.62587D-12 P5 = 7.0000A6 = -1.41752D-12 P6 = 8.0000A7 = -6.48079D-16 P7 = 10.0000______________________________________ f.sub.123 = 64.52 f.sub.4 = -93.50 f.sub.B = 46.3 .SIGMA.D = 47.72 Telephoto ratio = 0.9402______________________________________
Embodiment 25
______________________________________f = 100 W = 35.1.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.806 8.33 1.62041 60.32 45.147 3.233 -68.199 1.67 1.84666 23.94 49.314 0.815 80.124 2.67 1.49200 55.0 (resin)6 112.653 0.337 61.164 6.17 1.69895 30.18 -50.144 21.839 -15.946 2.67 1.49200 55.0 (resin)10 -21.943______________________________________Aspherical surface: 5 .DELTA.X(0.10 f) = -0.58351 .times. 10.sup.-3______________________________________K = -1.59018D-01A1 = 4.59004D-03 P1 = 2.0000A2 = -4.54418D-06 P2 = 4.0000A3 = -1.28609D-08 P3 = 5.0000A4 = -6.19631D-10 P4 = 6.0000A5 = -4.78023D-12 P5 = 7.0000A6 = -2.04508D-14 P6 = 8.0000A7 = 1.59913D-16 P7 = 9.0000A8 = 5.82337D-18 P8 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f) = -0.19630 .times. 10.sup.-2______________________________________K = -9.03393D-02A1 = 4.27902D-03 P1 = 2.0000A2 = 6.84180D-07 P2 = 4.0000A3 = 2.69934D-08 P3 = 5.0000A4 = -4.17368D-10 P4 = 6.0000A5 = -7.62582D-12 P5 = 7.0000A6 = -1.28071D-12 P6 = 8.0000A7 = -6.01368D-16 P7 = 10.0000______________________________________f.sub.123 = 62.81 Telephoto ratio = 0.9385f.sub.4 = -85.92f.sub.B = 46.14.SIGMA.D = 47.71______________________________________
Embodiment 26
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.558 8.50 1.62041 60.32 50.521 3.233 -86.490 1.67 1.84666 23.04 46.162 0.775 56.176 3.33 1.49200 55.0 (resin)6 93.231 0.337 61.338 5.83 1.69895 30.18 -54.756 21.969 -15.432 3.00 1.49200 55.0 (resin)10 -22.849______________________________________Aspherical surface: 5 .DELTA.X(0.10 f) = -0.50865 .times. 10.sup.-3______________________________________K = -4.13430D-01A1 = 3.07639D-04 P1 = 2.0000A2 = -4.38729D-06 P2 = 4.0000A3 = -3.04057D-08 P3 = 5.0000A4 = -2.37276D-10 P4 = 6.0000A5 = 4.02770D-12 P5 = 7.0000A6 = 1.18648D-13 P6 = 8.0000A7 = 2.04293D-15 P7 = 9.0000A8 = 2.92834D-17 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f) = 0.72242 .times. 10.sup.-2______________________________________K = -1.00301D-01A1 = -1.74270D- 03 P1 = 2.0000A2 = -9.05943D-07 P2 = 4.0000A3 = -4.68770D-08 P3 = 5.0000A4 = -5.32538D-10 P4 = 6.0000A5 = -2.94270D-12 P5 = 7.0000A6 = 2.18312D-14 P6 = 8.0000A7 = 1.86221D-17 P7 = 10.0000______________________________________f.sub.123 = 64.68 Telephoto ratio = 0.9372f.sub.4 = -94.27f.sub.B = 45.1.SIGMA.D = 48.62______________________________________
Embodiment 27
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.646 8.33 1.62041 60.32 48.411 3.233 -53.113 1.67 1.84666 23.94 43.749 0.815 52.291 6.17 1.72825 28.56 -48.136 0.337 -3793.085 2.67 1.49200 55.0 (resin)8 -88.287 21.799 -14.473 2.67 1.49200 55.0 (resin)10 -19.401______________________________________Aspherical surface: 7 .DELTA.X(0.10 f) = -0.16666 .times. 10.sup.-3______________________________________K = 4.38921D-06A1 = 4.69011D-04 P1 = 2.0000A2 = -1.53283D-06 P2 = 4.0000A3 = -8.96344D-09 P3 = 5.0000A4 = -4.15499D-10 P4 = 6.0000A5 = -2.50827D-12 P5 = 7.0000A6 = -4.36034D-15 P6 = 8.0000A7 = 1.85093D-16 P7 = 9.0000A8 = 4.27796D-18 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f) = 0.12269 .times. 10.sup.-1______________________________________K = -4.28431D-01A1 = 3.80170D-04 P1 = 2.0000A2 = 9.76514D-08 P2 = 4.0000A3 = -4.42657D-08 P3 = 5.0000A4 = -6.77506D-10 P4 = 6.0000A5 = -9.33013D-12 P5 = 7.0000A6 = -1.06698D-13 P6 = 8.0000A7 = -1.09735D-17 P7 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f) = 0.36386 .times. 10.sup.-2______________________________________K = -6.44648D-01A1 = 2.88343D-03 P1 = 2.0000A2 = 9.90432D-07 P2 = 4.0000A3 = -5.81352D-10 P3 = 6.0000A4 = -8.62134D-13 P4 = 8.0000A5 = -3.56286D-16 P5 = 10.0000______________________________________ f.sub.123 = 65.51 f.sub.4 = -102.63 f.sub.B = 47.88 .SIGMA.D = 47.67 Telephoto ratio = 0.9555______________________________________
Embodiment 28
______________________________________f = 100 W = 34.9.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.645 8.33 1.62041 60.32 46.865 3.233 -53.761 1.67 1.84666 23.94 45.425 0.815 50.615 6.17 1.72825 28.56 -49.001 0.337 -1752.554 2.67 1.49200 55.0 (resin)8 -81.430 21.799 -14.538 2.67 1.49200 55.0 (resin)10 -19.752______________________________________Aspherical surface: 8 .DELTA.X(0.10 f) = 0.30774 .times. 10.sup.-3______________________________________K = -1.06071D-01A1 = 4.95645D-04 P1 = 2.0000A2 = 2.94707D-06 P2 = 4.0000A3 = 1.98839D-08 P3 = 5.0000A4 = -3.83365D-10 P4 = 6.0000A5 = -2.69120D-12 P5 = 7.0000A6 = -1.06186D-14 P6 = 8.0000A7 = 8.33083D-17 P7 = 9.0000A8 = 2.91031D-18 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f) = 0.10694 .times. 10.sup.-1______________________________________K = -4.16566D-01A1 = 6.79564D-04 P1 = 2.0000A2 = 6.75223D-09 P2 = 4.0000A3 = -4.41548D-08 P3 = 5.0000A4 = -6.63263D-10 P4 = 6.0000A5 = -9.01936D-12 P5 = 7.0000A6 = -1.01266D-13 P6 = 8.0000A7 = -9.57618D-18 P7 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f) = 0.30538 .times. 10.sup.-2______________________________________K = -5.83710D-01A1 = 2.76906D-03 P1 = 2.0000A2 = 1.12684D-06 P2 = 4.0000A3 = -5.81019D-10 P3 = 6.0000A4 = -8.58020D-13 P4 = 8.0000A5 = -3.54324D-16 P5 = 10.0000______________________________________ f.sub.123 = 65.72 f.sub.4 = -103.36 f.sub.B = 47.79 .SIGMA.D = 47.67 Telephoto ratio = 0.9546______________________________________
Embodiment 29
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 23.783 7.50 1.64000 60.12 43.796 3.233 -69.326 1.67 1.84666 23.94 60.513 0.815 88.007 3.23 1.49200 55.0 (resin)6 462.164 0.337 63.419 6.55 1.67270 32.18 -51.648 21.909 -15.469 2.67 1.49200 55.0 (resin)10 -26.165______________________________________Aspherical surface: 5 .DELTA.X(0.10 f)/f = -0.4804 .times. 10.sup.-3______________________________________K = -1.60557D-1A1 = 6.79397D-04 P1 = 2.0000A2 = -4.51173D-06 P2 = 4.0000A3 = -1.25660D-08 P3 = 5.0000A4 = -5.59313D-10 P4 = 6.0000A5 = -6.06844D-12 P5 = 7.0000A6 = 1.44023D-14 P6 = 8.0000A7 = -3.69172D-16 P7 = 9.0000A8 = 1.06361D-17 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f)/f = 0.50952 .times. 10.sup.-2______________________________________K = -1.54524D-01A1 = -4.47392D-04 P1 = 2.0000A2 = 8.20886D-08 P2 = 4.0000A3 = -1.90565D-08 P3 = 5.0000A4 = 6.15469D-10 P4 = 6.0000A5 = -6.65566D-12 P5 = 7.0000A6 = 2.95039D-13 P6 = 8.0000A7 = 4.98060D-17 P7 = 10.0000______________________________________f.sub.123 = 61.50 Telephoto ratio = 0.9388f.sub.4 = -80.92f.sub.B = 45.99.SIGMA.D = 47.89______________________________________
Embodiment 30
______________________________________f = 100 W = 34.9.degree. F 4.0______________________________________ R D N .nu.______________________________________1 19.445 5.71 1.51633 64.12 44.023 2.863 -79.101 1.43 1.80518 25.44 87.924 4.825 49.782 2.68 1.49200 55.0 (resin)6 80.350 0.337 64.774 5.00 1.62004 36.38 -63.214 12.529 -14.116 2.28 1.49200 55.0 (resin)10 -66.805______________________________________Aspherical surface: 5 .DELTA.X(0.10 f)/f = -0.14285 .times. 10.sup.-3______________________________________K = 6.70402D-02A1 = 1.67251D-03 P1 = 2.0000A2 = -1.52668D-06 P2 = 4.0000A3 = 6.66687D-09 P3 = 6.0000A4 = -1.89122D-12 P4 = 8.0000A5 = -5.57504D-16 P5 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f)/f = 0.27428 .times. 10.sup.-2______________________________________K = -3.92918D-01A1 = 2.29154D-03 P1 = 2.0000A2 = -1.52542D-05 P2 = 4.0000A3 = -8.70940D-09 P3 = 6.0000A4 = -4.69354D-12 P4 = 8.0000A5 = -1.00014D-15 P5 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f)/f = 0.90655 .times. 10.sup.-3______________________________________K = -6.97485D-01A1 = -7.07438D-03 P1 = 2.0000A2 = -5.37757D-06 P2 = 4.0000A3 = 2.28130D-08 P3 = 6.0000A4 = 1.49788D-12 P4 = 8.0000A5 = -4.82330D-15 P5 = 10.0000______________________________________f.sub.123 = 50.00 f.sub.4 = -56.95 f.sub.B = 54.11.SIGMA.D = 37.62 Telephoto ratio = 0.9173______________________________________
Embodiment 31
______________________________________f = 100 W = 35.1.degree. F 4.0______________________________________ R D N .nu.______________________________________1 24.380 8.12 1.60311 60.72 34.791 3.333 -64.815 2.00 1.84666 23.94 49.204 0.675 52.157 2.27 1.49200 55.0 (resin)6 66.690 0.337 43.398 6.96 1.63636 35.48 -45.921 25.989 -16.915 2.67 1.e9200 55.0 (resin)10 -17.658______________________________________Aspherical surface: 4 .DELTA.X(0.1 f)/f = 0.6 .times. 10.sup.-3______________________________________K = 1.21956D+00A1 = -4.02600D-03 P1 = 2.0000A2 = 2.63085D-06 P2 = 4.0000A3 = 1.37595D-07 P3 = 5.0000A4 = 7.28474D-10 P4 = 6.0000A5 = -8.86419D-11 P5 = 7.0000A6 = -1.42475D-12 P6 = 8.0000A7 = -3.03952D-14 P7 = 9.0000A8 = -3.36650D-16 P8 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f)/f = 0.38 .times. 10.sup.-1______________________________________K = -3.03103D-02A1 = -8.48312D-03 P1 = 2.0000A2 = 2.21494D-06 P2 = 4.0000A3 = 1.25470D-07 P3 = 5.0000A4 = -5.97302D-09 P4 = 6.0000A5 = -2.14538D-10 P5 = 7.0000A6 = -4.67757D-12 P6 = 8.0000A7 = -8.47523D-14 P7 = 9.0000A8 = -1.38487D-15 P8 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f)/f = 0.68 .times. 10.sup.-2______________________________________K = -1.31433D+00A1 = 3.81387D-03 P1 = 2.0000A2 = -6.17439D-06 P2 = 4.0000A3 = -1.06032D-07 P3 = 5.0000A4 = -2.77079D-09 P4 = 6.0000A5 = -2.45322D-11 P5 = 7.0000A6 = -8.06784D-12 P6 = 8.0000A7 = 7.48805D-14 P7 = 9.0000A8 = 1.04863D-15 P8 = 10.0000______________________________________ f.sub.123 = 63.58 f.sub.4 = -85.39 f.sub.B = 43.2 .SIGMA.D = 52.33 Telephoto ratio = 0.9553______________________________________
Embodiment 32
______________________________________f = 100 W = 35.0.degree. F 4.0______________________________________ R D N .nu.______________________________________1 24.255 7.68 1.60311 60.72 41.928 3.333 -67.703 2.00 1.84666 23.94 63.787 0.675 57.957 2.40 1.49200 55.0 (resin)6 126.241 0.337 43.362 6.46 1.63636 3.58 -44.918 25.619 -16.909 2.67 1.49200 55.0 (resin)10 -17.652______________________________________Aspherical surface: 5 .DELTA.X(0.1 f)/f = 0.89796 .times. 10.sup.-3______________________________________K = -1.04606D+00A1 = -3.71564D-03 P1 = 2.0000A2 = -8.24299D-06 P2 = 4.0000A3 = -5.76765D-09 P3 = 6.0000A4 = -1.10664D-12 P4 = 8.0000A5 = -1.69979D-16 P5 = 10.0000______________________________________Aspherical surface: 9 .DELTA.X(0.13 f)/f = 0.38180 .times. 10.sup.-1______________________________________K = -3.03103D-02A1 = -8.48593D-03 P1 = 2.0000A2 = 2.21714D-06 P2 = 4.0000A3 = 1.25637D-07 P3 = 5.0000A4 = -5.98291D-09 P4 = 6.0000A5 = -2.14965D-10 P5 = 7.0000A6 = -4.68841D-12 P6 = 8.0000A7 = -8.49769D-14 P7 = 9.0000A8 = -1.38900D-15 P8 = 10.0000______________________________________Aspherical surface: 10 .DELTA.X(0.14 f)/f = 0.68046 .times. 10.sup.-2______________________________________K = -1.31433D+00A1 = 3.81513D-03 P1 = 2.0000A2 = -6.18052D-06 P2 = 4.0000A3 = -1.06172D-07 P3 = 5.0000A4 = -2.77537D-09 P4 = 6.0000A5 = -2.45810D-11 P5 = 7.0000A6 = -8.08655D-12 P6 = 8.0000A7 = 7.50790D-14 P7 = 9.0000A8 = 1.05176D-15 P8 = 10.0000______________________________________ f.sub.123 = 63.32 f.sub.4 = -85.37 f.sub.B = 43.74 .SIGMA.D = 51.15 Telephoto ratio = 0.9489______________________________________

Number	Date	Country	Kind
59-115556	Jun 1984	JPX
59-180775	Aug 1984	JPX

Number	Name	Date
4394073	Wakamiya	Jul 1983
4456345	Fujibayashi	Jun 1984
4606607	Kurihara	Aug 1986

Wide angle lens

Information

Patent Number

Date Filed

Date Issued

Inventors

Original Assignees

Examiners

Agents

CPC

US Classifications

Field of Search

US

International Classifications

Abstract

Description

Claims

Priority Claims (2)

US Referenced Citations (3)