Camera optical lens

Information

  • Patent Grant
  • 10534160
  • Patent Number
    10,534,160
  • Date Filed
    Tuesday, January 9, 2018
    6 years ago
  • Date Issued
    Tuesday, January 14, 2020
    4 years ago
Abstract
The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201711367423.7 and Ser. No. 201711365924.1 filed on Dec. 18, 2017, the entire content of which is incorporated herein by reference.


FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices.


DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other than Charge Coupled Device (CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices shrink, coupled with the current development trend of electronic products being that their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.





BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure.



FIG. 1 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;



FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;



FIG. 3 shows the lateral color of the camera optical lens shown in FIG. 1;



FIG. 4 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 1;



FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;



FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;



FIG. 7 presents the lateral color of the camera optical lens shown in FIG. 5;



FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5;



FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;



FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;



FIG. 11 presents the lateral color of the camera optical lens shown in FIG. 9;



FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.





DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with is the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.


Embodiment 1

As referring to FIG. 1, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 6 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Optical element like optical filter GF can be arranged between the sixth lens L6 and the image surface Si. The first lens L1 is made of plastic material, the second lens L2 is made of glass material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of glass material, and the sixth lens L6 is made of plastic material.


Here, the focal length of the whole camera optical lens 10 is defined as f, the focal length of the first lens is defined as f1. The camera optical lens further satisfies the following condition: 0.5≤f1/f≤10. Condition 0.5≤f1/f≤10 fixes the positive refractive power of the first lens L1. If the upper limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, but the positive refractive power of the first lens L1 will be too strong, problem like aberration is difficult to be corrected, and it is also unfavorable for wide-angle development of lens. On the contrary, if the lower limit of the set value is exceeded, the positive refractive power of the first lens L1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, 0.8≤f1/f≤5.6.


The refractive power of the second lens L2 is defined as n2. Here the following condition should satisfied: 1.7≤n2≤2.2. This condition fixes the refractive power of the second lens L2, and refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.7≤n2≤2.15.


The refractive power of the fifth lens L5 is defined as n5. Here the following condition should satisfied: 1.7≤n5≤2.2. This condition fixes the refractive power of the fifth lens L5, and refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.7≤n5≤1.96.


The thickness on-axis of the second lens L2 is defined as d3, and the total optical length of the camera optical lens is defined as TTL. The following condition should be satisfied: 0.025≤d3/TTL≤0.2, which benefits the ultra-thin development of lenses. Preferably, the following condition 0.035≤d3/TTL≤0.125 should be satisfied.


In this embodiment, the first lens L1 has a positive refractive power with a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis.


The curvature radius of the object side surface of the first lens L1 is defined as R1, the curvature radius of the image side surface of the first lens L1 is defined as R2. The camera optical lens 10 further satisfies the following condition: −4.14≤(R1+R2)/(R1−R2)≤−1.21, which fixes the shape of the first lens L1. When the value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the condition −2.59≤(R1+R2)/(R1−R2)≤−1.51 shall be satisfied.


The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.33≤d1≤1.03 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.53≤d1≤0.82 shall be satisfied.


In this embodiment, the second lens L2 has a negative refractive power with a convex object side surface and a concave image side surface relative to the proximal axis.


The focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2. The following condition should be satisfied: −5.17≤f2/f≤−1.60. When the condition is satisfied, the negative refractive power of the second lens L2 is controlled within reasonable scope, the spherical aberration caused by the first lens L1 which has positive refractive power and the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition −3.23≤f2/f≤−2.00 should be satisfied.


The curvature radius of the object side surface of the second lens L2 is defined as R3, the curvature radius of the image side surface of the second lens L2 is defined as R4. The following condition should be satisfied: 1.64≤(R3+R4)/(R3−R4)≤7.52, which fixes the shape of the second lens L2 and can effectively correct aberration of the camera optical lens. Preferably, the following condition shall be satisfied, 2.63≤(R3+R4)/(R3−R4)≤6.02.


The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.11≤d3≤0.37 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.18≤d3≤0.30 shall be satisfied.


In this embodiment, the third lens L3 has a positive refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.


The focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3. The following condition should be satisfied: 0.92≤f3/f≤3.09, by which the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition 1.48≤f3/f≤2.47 should be satisfied.


The curvature radius of the object side surface of the third lens L3 is defined as R5, the curvature radius of the image side surface of the third lens L3 is defined as R6. The following condition should be satisfied: 0.60≤(R5+R6)/(R5−R6)≤1.83, which is beneficial for the shaping of the third lens L3, and bad shaping and stress generation due to extra large curvature of surface of the third lens L3 can be avoided. Preferably, the following condition shall be satisfied, 0.96≤(R5+R6)/(R5−R6)≤1.47.


The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.23≤d5≤0.87 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.37≤d5≤0.69 shall be satisfied.


In this embodiment, the fourth lens L4 has a negative refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.


The focal length of the whole camera optical lens 10 is f, the focal length of the fourth lens L4 is f4. The following condition should be satisfied: −10.60≤f4/f≤−2.78, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition −6.63≤f4/f≤−3.48 should be satisfied.


The curvature radius of the object side surface of the fourth lens L4 is defined as R7, the curvature radius of the image side surface of the fourth lens L4 is defined as R8. The following condition should be satisfied: −9.29≤(R7+R8)/(R7−R8)≤−2.35, by which, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −5.81≤(R7+R8)/(R7−R8)≤−2.93.


The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.08≤d7≤0.26 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.13≤d7≤0.21 shall be satisfied.


In this embodiment, the fifth lens L5 has a positive refractive power with a convex object side surface relative to the proximal axis.


The focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5. The following condition should be satisfied: 0.46≤f5/f≤1.59, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition 0.74≤f5/f≤1.27 should be satisfied.


The curvature radius of the object side surface of the fifth lens L5 is defined as R9, the curvature radius of the image side surface of the fifth lens L5 is defined as R10. The following condition should be satisfied: −2.01≤(R9+R10)/(R9−R10)≤−0.58, by which, the shape of the fifth lens L5 is fixed, further, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −1.26≤(R9+R10)/(R9−R10)≤−0.72.


The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.21≤d9≤0.64 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.34≤d9≤0.51 shall be satisfied.


In this embodiment, the sixth lens L6 has a negative refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.


The focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6. The following condition should be satisfied: −1.45≤f6/f≤−0.42, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition −0.91≤f6/f≤−0.53 should be satisfied.


The curvature radius of the object side surface of the sixth lens L6 is defined as R11, the curvature radius of the image side surface of the sixth lens L6 is defined as R12. The following condition should be satisfied: −2.72≤(R11+R12)/(R11−R12)≤−0.82, by which, the shape of the sixth lens L6 is fixed, further, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −1.70≤(R11+R12)/(R11−R12)≤−1.03.


The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.10≤d11≤0.38 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.16≤d11≤0.31 shall be satisfied.


The focal length of the whole camera optical lens 10 is f, the combined focal length of the first lens L1 and the second lens L2 is f12. The following condition should be satisfied: 0.81≤f12/f≤2.86, which can effectively avoid the aberration and field curvature of the camera optical lens, and can suppress the rear focal length for realizing the ultra-thin lens. Preferably, the condition 1.29≤f12/f≤2.29 should be satisfied.


In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.66 mm, it is beneficial for the realization of ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.40 mm.


In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.27. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.22.


With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.


In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.


TTL: Optical length (the distance on-axis from the object side surface of the first lens L1 to the image surface).


Preferably, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.


The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.


The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.














TABLE 1







R
d
nd
νd























S1

d0=
−0.200






R1
1.832
d1=
0.667
nd1
1.5439
ν1
55.95


R2
6.333
d2=
0.048


R3
6.581
d3=
0.225
nd2
1.7174
ν2
29.52


R4
3.511
d4=
0.321


R5
−46.995
d5=
0.460
nd3
1.5439
ν3
55.95


R6
−4.238
d6=
0.341


R7
−4.834
d7=
0.172
nd4
1.6355
ν4
23.97


R8
−8.673
d8=
0.336


R9
3.161
d9=
0.426
nd5
1.7130
ν5
53.87


R10
1480.322
d10=
0.803


R11
−1.321
d11=
0.256
nd6
1.5352
ν6
56.12


R12
−10.391
d12=
0.350


R13

d13=
0.210
ndg
1.5168
νg
64.17


R14

d14=
0.332









Where:


In which, the meaning of the various symbols is as follows.

    • S1: Aperture;
    • R: The curvature radius of the optical surface, the central curvature radius in case of lens;
    • R1: The curvature radius of the object side surface of the first lens L1;
    • R2: The curvature radius of the image side surface of the first lens L1;
    • R3: The curvature radius of the object side surface of the second lens L2;
    • R4: The curvature radius of the image side surface of the second lens L2;
    • R5: The curvature radius of the object side surface of the third lens L3;
    • R6: The curvature radius of the image side surface of the third lens L3;
    • R7: The curvature radius of the object side surface of the fourth lens L4;
    • R8: The curvature radius of the image side surface of the fourth lens L4;
    • R9: The curvature radius of the object side surface of the fifth lens L5;
    • R10: The curvature radius of the image side surface of the fifth lens L5;
    • R11: The curvature radius of the object side surface of the sixth lens L6;
    • R12: The curvature radius of the image side surface of the sixth lens L6;
    • R13: The curvature radius of the object side surface of the optical filter GF;
    • R14: The curvature radius of the image side surface of the optical filter GF;
    • d: The thickness on-axis of the lens and the distance on-axis between the lens;
    • d0: The distance on-axis from aperture Si to the object side surface of the first lens L1;
    • d1: The thickness on-axis of the first lens L1;
    • d2: The distance on-axis from the image side surface of the first lens L1 to the object side surface of the second lens L2;
    • d3: The thickness on-axis of the second lens L2;
    • d4: The distance on-axis from the image side surface of the second lens L2 to the object side surface of the third lens L3;
    • d5: The thickness on-axis of the third lens L3;
    • d6: The distance on-axis from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;
    • d7: The thickness on-axis of the fourth lens L4;
    • d8: The distance on-axis from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;
    • d9: The thickness on-axis of the fifth lens L5;
    • d10: The distance on-axis from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;
    • d11: The thickness on-axis of the sixth lens L6;
    • d12: The distance on-axis from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;
    • d13: The thickness on-axis of the optical filter GF;
    • d14: The distance on-axis from the image side surface to the image surface of the optical filter GF;
    • nd: The refractive power of the d line;
    • nd1: The refractive power of the d line of the first lens L1;
    • nd2: The refractive power of the d line of the second lens L2;
    • nd3: The refractive power of the d line of the third lens L3;
    • nd4: The refractive power of the d line of the fourth lens L4;
    • nd5: The refractive power of the d line of the fifth lens L5;
    • nd6: The refractive power of the d line of the sixth lens L6;
    • ndg: The refractive power of the d line of the optical filter GF;
    • vd: The abbe number;
    • v1: The abbe number of the first lens L1;
    • v2: The abbe number of the second lens L2;
    • v3: The abbe number of the third lens L3;
    • v4: The abbe number of the fourth lens L4;
    • v5: The abbe number of the fifth lens L5;
    • v6: The abbe number of the sixth lens L6;
    • vg: The abbe number of the optical filter GF.


Table 2 shows the aspherical surface data of the camera optical lens 10 in the embodiment 1 of the present invention.












TABLE 2









Conic Index
Aspherical Surface Index
















k
A4
A6
A8
A10
A12
A14
A16



















R1
−2.2588E−01
 1.0064E−02
−4.3103E−03
−4.8664E−03
 1.3054E−02
−5.6660E−03 
 2.9761E−03
−7.3364E−03


R2
 1.5006E+01
−1.4094E−01
 1.0661E−01
−2.8224E−02
−2.9840E−02
1.1126E−02
 5.4723E−03
−9.4350E−03


R3
 1.9599E+01
−1.6169E−01
 1.6416E−01
−6.2896E−02
−2.4597E−02
9.6898E−03
 1.0854E−02
−6.3335E−03


R4
 5.6386E+00
−4.7359E−02
 8.4573E−02
−2.7088E−02
 1.1095E−02
−4.0731E−02 
 4.0421E−02
−1.1211E−02


R5
 0.0000E+00
−6.1935E−02
 2.2810E−03
 2.9296E−03
−9.2869E−03
2.5149E−02
−2.8780E−02
 1.4598E−02


R6
 1.8870E+00
−7.1631E−02
−1.4454E−02
 4.6326E−03
 2.8593E−03
−1.3580E−02 
 9.5120E−03
−1.3512E−03


R7
−4.7231E+01
−1.2406E−01
 7.0329E−02
−1.4122E−02
−1.2590E−04
2.5121E−03
−1.2812E−03
 1.5315E−04


R8
−3.4055E+00
−1.2185E−01
 6.1037E−02
−7.6615E−04
−2.0872E−03
−3.2261E−04 
 1.1216E−04
−9.2064E−07


R9
−6.0837E−01
−5.7458E−02
−6.6153E−04
−5.7505E−04
−9.4704E−04
5.8938E−04
−1.8748E−04
 2.5274E−05


R10
 4.5252E+05
 3.0220E−02
−3.1945E−02
 8.9850E−03
−1.5507E−03
1.7839E−04
−1.5787E−05
 8.8404E−07


R11
−1.7146E+00
 2.2180E−02
−1.5691E−02
 5.8198E−03
−9.8984E−04
8.9720E−05
−4.2065E−06
 8.6040E−08


R12
−2.5102E+02
 4.7100E−03
−8.4114E−03
 2.6417E−03
−5.1216E−04
5.2717E−05
−2.6574E−06
 5.9068E−08









Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 are aspheric surface indexes.


IH: Image height

y=(x2/R)/[1+{1−(k+1)(x2/R2)}1/2]+A4x4+A6x6+A8x8+A10x10+A12x12+A14x14+A16x16  (1)


For convenience, the aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).


Table 3 and table 4 show the inflexion points and the arrest point design data of the camera optical lens 10 lens in embodiment 1 of the present invention. In which, P1R1 and P1R2 represent respectively the object side surface and image side surface of the first lens L1, P2R1 and P2R2 represent respectively the object side surface and image side surface of the second lens L2, P3R1 and P3R2 represent respectively the object side surface and image side surface of the third lens L3, P4R1 and P4R2 represent respectively the object side surface and image side surface of the fourth lens L4, P5R1 and P5R2 represent respectively the object side surface and image side surface of the fifth lens L5, P6R1 and P6R2 represent respectively the object side surface and image side surface of the sixth lens L6. The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.













TABLE 3







Inflexion point
Inflexion point
Inflexion point



number
position 1
position 2





















P1R1
1
0.985




P1R2
1
0.365



P2R1
1
0.345



P2R2
0



P3R1
1
0.985



P3R2
0



P4R1
2
1.055
1.345



P4R2
1
1.005



P5R1
2
0.685
1.855



P5R2
1
0.705



P6R1
1
1.545



P6R2
1
2.675




















TABLE 4







Arrest point
Arrest point



number
position 1




















P1R1
0




P1R2
1
0.755



P2R1
1
0.915



P2R2
0



P3R1
0



P3R2
0



P4R1
0



P4R2
1
1.465



P5R1
1
1.135



P5R2
1
0.935



P6R1
0



P6R2
0











FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 nm passes the camera optical lens 10 in the first embodiment. FIG. 4 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens 10 in the first embodiment, the field curvature S in FIG. 4 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction.


Table 13 shows the various values of the embodiments 1, 2, 3, and the values corresponding with the parameters which are already specified in the conditions.


As shown in Table 13, the first embodiment satisfies the various conditions.


In this embodiment, the pupil entering diameter of the camera optical lens is 1.903 mm, the full vision field image height is 3.928 mm, the vision field angle in the diagonal direction is 85.32°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.


Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.


Table 5 and table 6 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.














TABLE 5







R
d
nd
νd























S1

d0=
−0.200






R1
1.885
d1=
0.668
nd1
1.5439
ν1
55.95


R2
5.968
d2=
0.057


R3
6.101
d3=
0.250
nd2
1.9020
ν2
25.10


R4
3.586
d4=
0.305


R5
−38.180
d5=
0.502
nd3
1.5439
ν3
55.95


R6
−3.827
d6=
0.329


R7
−4.906
d7=
0.162
nd4
1.6355
ν4
23.97


R8
−7.597
d8=
0.333


R9
3.032
d9=
0.424
nd5
1.7130
ν5
53.87


R10
−350.442
d10=
0.781


R11
−1.267
d11=
0.200
nd6
1.5352
ν6
56.12


R12
−12.221
d12=
0.350


R13

d13=
0.210
ndg
1.5168
νg
64.17


R14

d14=
0.439









Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.












TABLE 6









Conic Index
Aspherical Surface Index
















k
A4
A6
A8
A10
A12
A14
A16



















R1
−1.7444E−01
 1.4174E−02
−1.0411E−02
−4.7380E−03
 1.5169E−02
−4.2722E−03 
 4.6304E−03
−7.3184E−03 


R2
 1.6951E+01
−1.4594E−01
 1.1394E−01
−2.5379E−02
−2.6542E−02
1.5367E−02
 8.9443E−03
−8.7633E−03 


R3
 2.0372E+01
−1.5837E−01
 1.5964E−01
−6.2585E−02
−2.3472E−02
1.0419E−02
 1.1706E−02
−4.5965E−03 


R4
 5.0514E+00
−5.5237E−02
 8.6136E−02
−2.8666E−02
 8.6383E−03
−4.1696E−02 
 4.0350E−02
−1.0420E−02 


R5
 0.0000E+00
−6.1082E−02
 2.6061E−03
 2.4468E−03
−9.2874E−03
2.4426E−02
−2.9362E−02
1.4995E−02


R6
 2.5737E+00
−7.5754E−02
−1.5093E−02
 4.0528E−03
 2.0131E−03
−1.4050E−02 
 9.2651E−03
−1.8863E−03 


R7
−5.4610E+01
−1.2400E−01
 7.0175E−02
−1.4207E−02
−1.2497E−04
2.5278E−03
−1.2734E−03
1.4936E−04


R8
−4.2555E+00
−1.2244E−01
 6.0875E−02
−8.2549E−04
−2.1349E−03
−3.4032E−04 
 1.1489E−04
2.9988E−06


R9
−8.1142E−01
−5.8792E−02
−6.1847E−04
−5.5988E−04
−9.5823E−04
5.8211E−04
−1.8804E−04
2.5167E−05


R10
−3.8370E+04
 2.9057E−02
−3.1910E−02
 8.9993E−03
−1.5479E−03
1.7892E−04
−1.5790E−05
8.6621E−07


R11
−1.6707E+00
 2.1779E−02
−1.5665E−02
 5.8275E−03
−9.8789E−04
9.0118E−05
−4.1724E−06
9.0572E−08


R12
−3.2860E+02
 6.2720E−03
−8.3246E−03
 2.6419E−03
−5.1221E−04
5.2698E−05
−2.6629E−06
5.7878E−08









Table 7 and table 8 show the inflexion points and the arrest point design data of the camera optical lens 20 lens in embodiment 2 of the present invention.














TABLE 7







Inflexion point
Inflexion point
Inflexion point
Inflexion point



number
position 1
position 2
position 3




















P1R1
0





P1R2
3
0.385
0.745
0.975


P2R1
2
0.385
0.665


P2R2
0


P3R1
1
0.995


P3R2
0


P4R1
2
1.055
1.345


P4R2
1
1.015


P5R1
2
0.685
1.885


P5R2
2
0.095
0.675


P6R1
1
1.545


P6R2
1
2.695




















TABLE 8







Arrest point
Arrest point
Arrest point



number
position 1
position 2





















P1R1
0





P1R2
0



P2R1
0



P2R2
0



P3R1
0



P3R2
0



P4R1
0



P4R2
1
1.525



P5R1
1
1.145



P5R2
2
0.155
0.885



P6R1
0



P6R2
0











FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 nm passes the camera optical lens 20 in the second embodiment. FIG. 8 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens 20 in the second embodiment.


As shown in Table 13, the second embodiment satisfies the various conditions.


In this embodiment, the pupil entering diameter of the camera optical lens is 1.914 mm, the full vision field image height is 3.928 mm, the vision field angle in the diagonal direction is 85.18°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.


Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.


Table 9 and table 10 show the design data of the camera optical lens 30 in embodiment 3 of the present invention.














TABLE 9







R
d
nd
νd























S1

d0=
−0.200






R1
1.905
d1=
0.687
nd1
1.5439
ν1
55.95


R2
5.463
d2=
0.072


R3
5.409
d3=
0.243
nd2
2.1019
ν2
16.79


R4
3.610
d4=
0.304


R5
−45.865
d5=
0.579
nd3
1.5439
ν3
55.95


R6
−4.296
d6=
0.306


R7
−4.410
d7=
0.167
nd4
1.6355
ν4
23.97


R8
−6.857
d8=
0.266


R9
2.959
d9=
0.426
nd5
1.7130
ν5
53.87


R10
−41.658
d10=
0.791


R11
−1.370
d11=
0.200
nd6
1.5352
ν6
56.12


R12
−9.017
d12=
0.350


R13

d13=
0.210
ndg
1.5168
νg
64.17


R14

d14=
0.541









Table 10 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.












TABLE 10









Conic Index
Aspherical Surface Index
















k
A4
A6
A8
A10
A12
A14
A16



















R1
−1.4509E−01
 7.8791E−03
−6.9577E−03
−7.8073E−04
 1.2129E−02
−9.3329E−03 
 4.0385E−03
−2.1152E−03 


R2
 1.8401E+01
−1.4047E−01
 1.2083E−01
−2.6141E−02
−3.1095E−02
1.4784E−02
 1.4707E−02
2.7979E−04


R3
 2.2057E+01
−1.4221E−01
 1.5095E−01
−6.3067E−02
−1.9873E−02
1.4635E−02
 1.3463E−02
−7.8954E−03 


R4
 4.6525E+00
−6.5210E−02
 9.4073E−02
−2.6750E−02
 8.8750E−03
−4.0819E−02 
 3.8665E−02
−8.3087E−03 


R5
 0.0000E+00
−7.2313E−02
 1.9564E−03
 1.1052E−03
−1.4803E−02
2.4678E−02
−2.3595E−02
1.4223E−02


R6
 2.7047E+00
−7.7055E−02
−1.6546E−02
 4.0035E−03
 1.2133E−03
−1.1949E−02 
 9.7590E−03
−2.2882E−03 


R7
−6.2403E+01
−1.2295E−01
 7.0716E−02
−1.4040E−02
−8.9500E−05
2.4939E−03
−1.2770E−03
1.7418E−04


R8
−8.4957E−01
−1.2493E−01
 6.0387E−02
−9.4923E−04
−2.1512E−03
−3.4343E−04 
 1.1524E−04
4.2929E−06


R9
−8.0196E−01
−5.9028E−02
−6.1532E−04
−4.3211E−04
−9.3462E−04
5.8464E−04
−1.9039E−04
2.4038E−05


R10
−2.2817E+04
 3.2236E−02
−3.1960E−02
 9.0163E−03
−1.5434E−03
1.7967E−04
−1.5653E−05
8.5573E−07


R11
−1.6666E+00
 2.1588E−02
−1.5710E−02
 5.8206E−03
−9.8910E−04
9.0031E−05
−4.1529E−06
1.0974E−07


R12
−3.5699E+02
 5.7670E−03
−8.3679E−03
 2.6443E−03
−5.1185E−04
5.2747E−05
−2.6578E−06
5.8374E−08









Table 11 and table 12 show the inflexion points and the arrest point design data of the camera optical lens 30 lens in embodiment 3 of the present invention.













TABLE 11







Inflexion point
Inflexion point
Inflexion point



number
position 1
position 2





















P1R1
0





P1R2
0



P2R1
0



P2R2
0



P3R1
1
0.985



P3R2
0



P4R1
2
1.025
1.435



P4R2
1
1.055



P5R1
2
0.695
1.935



P5R2
2
0.195
0.735



P6R1
1
1.565



P6R2
1
2.645





















TABLE 12







Arrest point
Arrest point
Arrest point



number
position 1
position 2





















P1R1
0





P1R2
0



P2R1
0



P2R2
0



P3R1
0



P3R2
0



P4R1
0



P4R2
0



P5R1
1
1.155



P5R2
2
0.375
0.935



P6R1
0



P6R2
0











FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 nm passes the camera optical lens 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens 30 in the third embodiment.


As shown in Table 13, the third embodiment satisfies the various conditions.


In this embodiment, the pupil entering diameter of the camera optical lens is 1.912 mm, the full vision field image height is 3.928 mm, the vision field angle in the diagonal direction is 85.25°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.













TABLE 13







Embodi-
Embodi-
Embodi-



ment 1
ment 2
ment 3



















f
4.188
4.211
4.206


f1
4.506
4.790
5.034


f2
−10.822
−10.122
−10.601


f3
8.531
7.780
8.671


f4
−17.492
−22.323
−19.978


f5
4.442
4.218
3.890


f6
−2.855
−2.658
−3.047


f12
6.743
7.671
8.022


(R1 + R2)/(R1 − R2)
−1.814
−1.923
−2.071


(R3 + R4)/(R3 − R4)
3.287
3.852
5.013


(R5 + R6)/(R5 − R6)
1.198
1.223
1.207


(R7 + R8)/(R7 − R8)
−3.519
−4.647
−4.605


(R9 + R10)/(R9 − R10)
−1.004
−0.983
−0.867


(R11 + R12)/(R11 − R12)
−1.291
−1.231
−1.358


f1/f
1.076
1.137
1.197


f2/f
−2.584
−2.403
−2.520


f3/f
2.037
1.847
2.061


f4/f
−4.177
−5.301
−4.750


f5/f
1.061
1.002
0.925


f6/f
−0.682
−0.631
−0.724


f12/f
1.610
1.821
1.907


d1
0.667
0.668
0.687


d3
0.225
0.250
0.243


d5
0.460
0.502
0.579


d7
0.172
0.162
0.167


d9
0.426
0.424
0.426


d11
0.256
0.200
0.200


Fno
2.200
2.200
2.200


TTL
4.948
5.010
5.143


d1/TTL
0.135
0.133
0.134


d3/TTL
0.045
0.050
0.047


d5/TTL
0.093
0.100
0.113


d7/TTL
0.035
0.032
0.032


d9/TTL
0.086
0.085
0.083


d11/TTL
0.052
0.040
0.039


n1
1.5439
1.5439
1.5439


n2
1.7174
1.9020
2.1019


n3
1.5439
1.5439
1.5439


n4
1.6355
1.6355
1.6355


n5
1.7130
1.7130
1.7130


n6
1.5352
1.5352
1.5352


v1
55.9524
55.9524
55.9524


v2
29.5181
25.1014
16.7851


v3
55.9524
55.9524
55.9524


v4
23.9718
23.9718
23.9718


v5
53.8671
53.8671
53.8671


v6
56.1153
56.1153
56.1153









It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed.

Claims
  • 1. A camera optical lens comprising, from an object side to an image side in sequence: a first lens having a positive refractive power with a convex object side surface and a concave image side surface, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens; wherein the camera optical lens further satisfies the following conditions: 0.5≤f1/f≤10;1.7≤n2≤2.2;1.7≤n5≤2.2;0.025≤d3/TTL≤0.2;−4.14≤(R1+R2)/(R1−R2)≤−1.21;0.33≤d1≤1.03;wheref: the focal length of the camera optical lens;f1: the focal length of the first lens;n2: the refractive power of the second lens;n5: the refractive power of the fifth lens;d3: the thickness on-axis of the second lens;R1: the curvature radius of object side surface of the first lens;R2: the curvature radius of image side surface of the first lens;d1: the thickness on-axis of the first lens;TTL: the total optical length of the camera optical lens.
  • 2. The camera optical lens as described in claim 1, wherein the first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, the sixth lens is made of plastic material.
  • 3. The camera optical lens as described in claim 1 further satisfying the following conditions: 0.8≤f1/f≤5.6;1.7≤n2≤2.15;1.7≤n5≤1.96;0.035≤d3/TTL≤0.125.
  • 4. The camera optical lens as described in claim 1 further satisfying the following conditions: −2.59≤(R1+R2)/(R1−R2)≤−1.51;0.53≤d1≤0.82.
  • 5. The camera optical lens as described in claim 1, wherein the second lens has a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: −5.17≤f2/f≤−1.60;1.64≤(R3+R4)/(R3−R4)≤7.52;0.11≤d3≤0.37; wheref: the focal length of the camera optical lens;f2: the focal length of the second lens;R3: the curvature radius of the object side surface of the second lens;R4: the curvature radius of the image side surface of the second lens;d3: the thickness on-axis of the second lens.
  • 6. The camera optical lens as described in claim 5 further satisfying the following conditions: −3.23≤f2/f≤−2.00;2.63≤(R3+R4)/(R3−R4)≤6.02;0.18≤d3≤0.30.
  • 7. The camera optical lens as described in claim 1, wherein the third lens has a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: 0.92≤f3/f≤3.09;0.60≤(R5+R6/(R5−R6)≤1.83;0.23≤d5≤0.87; wheref: the focal length of the camera optical lens;f3: the focal length of the third lens;R5: the curvature radius of the object side surface of the third lens;R6: the curvature radius of the image side surface of the third lens;d5: the thickness on-axis of the third lens.
  • 8. The camera optical lens as described in claim 7 further satisfying the following conditions: 1.48≤f3/f≤2.47;0.96≤(R5+R6)/(R5−R6)≤1.47;0.37≤d5≤0.69.
  • 9. The camera optical lens as described in claim 1, wherein the fourth lens has a negative refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: −10.60≤f4/f≤2.78;−9.29≤(R7+R8)/(R7−R8)≤−2.35;0.08≤d7≤0.26; wheref: the focal length of the camera optical lens;f4: the focal length of the fourth lens;R7: the curvature radius of the object side surface of the fourth lens;R8: the curvature radius of the image side surface of the fourth lens;d7: the thickness on-axis of the fourth lens.
  • 10. The camera optical lens as described in claim 9 further satisfying the following conditions: −6.63≤f4/f≤−3.48;−5.81≤(R7+R8)/(R7−R8)≤−2.93;0.13≤d7≤0.21.
  • 11. The camera optical lens as described in claim 1, wherein the fifth lens has a positive refractive power with a convex object side surface; the camera optical lens further satisfies the following conditions: 0.46≤f5/f≤1.59;−2.01≤(R9+R10)/(R9−R10)≤−0.58;0.21≤d9≤0.64; wheref: the focal length of the camera optical lens;f5: the focal length of the fifth lens;R9: the curvature radius of the object side surface of the fifth lens;R10: the curvature radius of the image side surface of the fifth lens;d9: the thickness on-axis of the fifth lens.
  • 12. The camera optical lens as described in claim 11 further satisfying the following conditions: 0.74≤f5/f≤1.27;−1.26≤(R9+R10)/(R9−R10)≤−0.72;0.34≤d9≤0.51.
  • 13. The camera optical lens as described in claim 1, wherein the sixth lens has a negative refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: −1.45≤f6/f≤−0.42;−2.72≤(R11+R12)/(R11−R12)≤−0.82;0.10≤d11≤0.38; wheref: the focal length of the camera optical lens;f6: the focal length of the sixth lens;R11: the curvature radius of the object side surface of the sixth lens;R12: the curvature radius of the image side surface of the sixth lens;d11: the thickness on-axis of the sixth lens.
  • 14. The camera optical lens as described in claim 13 further satisfying the following conditions: −0.91≤f6/f≤−0.53;−1.70≤(R11+R12)/(R11−R12)≤−1.03;0.16≤d11≤0.31.
  • 15. The camera optical lens as described in claim 1 further satisfying the following condition: 0.81≤f12/f≤2.86; wheref12: the combined focal length of the first lens and the second lens;f: the focal length of the camera optical lens.
  • 16. The camera optical lens as described in claim 15 further satisfying the following condition: 1.29≤f12/f≤2.29.
  • 17. The camera optical lens as described in claim 1, wherein the total optical length TTL of the camera optical lens is less than or equal to 5.66 mm.
  • 18. The camera optical lens as described in claim 17, wherein the total optical length TTL of the camera optical lens is less than or equal to 5.40 mm.
  • 19. The camera optical lens as described in claim 1, wherein the aperture F number of the camera optical lens is less than or equal to 2.27.
  • 20. The camera optical lens as described in claim 19, wherein the aperture F number of the camera optical lens is less than or equal to 2.22.
Priority Claims (2)
Number Date Country Kind
2017 1 1365924 Dec 2017 CN national
2017 1 1367423 Dec 2017 CN national
US Referenced Citations (3)
Number Name Date Kind
7889442 Suzuki Feb 2011 B2
20150177490 Cho Jun 2015 A1
20150362699 Nakanuma Dec 2015 A1
Related Publications (1)
Number Date Country
20190187423 A1 Jun 2019 US