CN114236788A

CN114236788A - 6mm large-aperture athermalization glass-plastic hybrid lens

Info

Publication number: CN114236788A
Application number: CN202111522553.XA
Authority: CN
Inventors: 薛雷涛; 殷海明
Original assignee: Dongguan Changyi Photoelectric Co ltd
Current assignee: Dongguan Changyi Photoelectric Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-03-25

Abstract

The invention discloses a 6mm large-aperture athermalized glass-plastic hybrid lens, which sequentially comprises the following components from an object side to an image side along an optical axis of the lens: a first lens which is an aspheric plastic lens with negative focal power; a second lens which is an aspheric plastic lens with positive focal power; the third lens is a spherical glass lens with positive focal power; the fourth lens is an aspheric plastic lens with negative focal power; a fifth lens which is an aspheric plastic lens with positive focal power; the 6mm large-aperture athermalized glass-plastic hybrid lens adopts 1 piece of spherical glass and 4 pieces of aspheric plastic to be mixed and combined, can be matched with a chip of 5MP and 1/2.7 inch, realizes 24-hour all-weather high-definition monitoring, performs imaging confocal day and night, has clear real shooting pictures at high temperature of plus 80 ℃ and low temperature of minus 40 ℃, is insensitive to each lens in manufacturability, is easy to mold and manufacture, and has higher cost performance.

Description

6mm large-aperture athermalization glass-plastic hybrid lens

Technical Field

The invention relates to the technical field of optical imaging, in particular to a 6mm large-aperture athermalized glass-plastic hybrid lens.

Background

With the continuous progress of the society, the lens plays more and more important roles in the aspects of smart phones, tablet computers, video conferences, vehicle-mounted monitoring, security monitoring, unmanned aerial vehicle aerial photography and the like, and the development of the lens manufacturing field is promoted. In recent years, many series of products have been introduced for monitoring lenses for different purposes of use or environments, people pursue high performance of the lenses and also pursue minimization of cost of the lenses, and monitoring cameras with high definition pixels and low cost gradually occupy the market in the future. The existing lens on the market has the problems of poor image quality and high cost, for example, poor image quality in bad weather, difficult confocal imaging in daytime and at night, and the performance and the cost of the lens are to be improved.

The object of the invention is therefore: aiming at the defects of the prior art, the 6mm large-aperture athermalized glass-plastic hybrid lens is provided.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned deficiencies and providing a solution to at least one of the problems set forth above.

A6 mm large aperture athermalized glass-plastic hybrid lens defines the surface of one side of a lens adjacent to an object plane as an object side surface and the surface of one side of the lens adjacent to an image plane as an image side surface, and sequentially comprises from the object side to the image side along the optical axis of the lens:

the first lens (1) is an aspheric plastic lens with negative focal power, and the object side surface of the first lens is a convex surface while the image side surface of the first lens is a concave surface;

the second lens (2) is an aspheric plastic lens with positive focal power, and the object side surface of the second lens is a concave surface while the image side surface is a convex surface;

the third lens (3) is a spherical glass lens with positive focal power, and the object side surface of the third lens is a convex surface while the image side surface of the third lens is a convex surface;

the fourth lens (4) is an aspheric plastic lens with negative focal power, and the object side surface of the fourth lens is a convex surface while the image side surface of the fourth lens is a concave surface;

a fifth lens (5) which is an aspheric plastic lens with positive focal power, and the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the invention uses five lenses, has compact structure and ensures small volume of the system;

an aperture stop (9) located between the second lens (2) and the third lens (3);

the optical filter (6), the optical filter (6) is made of H-K9L;

an image pickup element (8);

a protective glass (7) integrated on the image capturing element (8);

the ratio of the focal length of each lens of the lens to the total focal length of the system meets the following conditions:

1.83≤|f1/f|≤3.47；

2.08≤|f2/f|≤7.52；

1.35≤|f3/f|≤1.50；

0.72≤|f4/f|≤0.97；

0.86≤|f5/f|≤1.01；

in the relation, "f" is the focal length of the lens optical system, "f 1" is the focal length of the first lens (1), "f 2" is the focal length of the second lens (2), and so on.

In an optical system, the focal length distribution of each lens is important, which determines the overall performance of the optical system, and the ratio of the focal length f3 of the third lens (3) to the focal length f of the optical system is controlled to be between 1.35 and 1.50, so that the optimal performance of the high-temperature and low-temperature performance of the system can be ensured.

Preferably, the first lens (1), the second lens (2), the fourth lens (4) and the fifth lens (5) of the lens are aspheric lenses, the third lens (3) is a glass lens, and the aberration of the system is favorably reduced and the resolving power of the system is improved by reasonably matching the focal power of each lens, so that the focal length, the refractive index and the curvature radius of the first lens to the fifth lens respectively meet the following conditions:

f1

-21.34~-10.77

ND1

1.50~1.55

R11

+2.67~+3.41

R12

+1.78~+1.93

f2

+12.56~+45.00

ND2

1.60~1.66

R21

-4.63~-4.38

R22

-4.67~-3.53

f3

+8.11~+8.97

ND3

1.49~1.60

R31

+10.81~+13.60

R32

-9.21~-7.61

f4

-5.78~-4.26

ND4

1.60~1.66

R41

+53.04~+12.70E+5

R42

+2.74~+3.43

f5

+5.15~+6.19

ND5

1.50~1.55

R51

+4.37~+4.85

R52

-8.21~-6.42

in the above table, "f 1" is the focal length of the first lens (1), "ND 1" is the refractive index of the first lens (1), "R11, R12" is the front and rear surface curvature radius of the first lens (1), "f 2" is the focal length of the second lens (2), "ND 2" is the refractive index of the second lens (2), "R21, R22" is the front and rear surface curvature radius of the second lens (2), "f 3" is the focal length of the third lens (3), "ND 3" is the refractive index of the third lens (3), "R31, R32" is the front and rear surface curvature radius of the third lens (3), "f 4" is the focal length of the fourth lens (4), "ND 4" is the refractive index of the fourth lens (4), "R41, R42" is the front and rear surface curvature radius of the fourth lens (4), "f 6" is the focal length of the fifth lens (5), "5" is the front and "R51 is the front and rear surface curvature radius of the fifth lens (51), the "-" number indicates a negative direction, and so on.

Preferably, IC/TTL is more than or equal to 0.29;

3.42≤TTL/f≤3.80；

0.31≤OBFL/TTL≤0.35；

in the relation, f is the focal length of the lens optical system; TTL is the total length of the lens optical system; OBFL is the optical rear intercept of the lens system, namely the distance from the point, closest to the image surface, of the image side surface of the fifth lens (5) to the image surface; IC is the full image height of 1/2.7' chip collocated with the lens system; the ratio of the optical back intercept OBFL to the total length TTL of the lens system is 0.31-0.35, and the visible lens has a large back intercept.

Preferably, F # is an aperture of the optical lens, and satisfies that F # is more than or equal to 1.40 and less than or equal to 1.65, F is a focal length of the optical lens, and satisfies that F is more than or equal to 5.85 and less than or equal to 6.15, therefore, the focal length of the lens is larger, the clear aperture is larger, the relative illumination of the system is ensured to be large, no dark corner exists in a picture during shooting, TTL is the total length of the lens optical system, TTL is more than or equal to 22.5mm, the total length of the system is small, and the small volume is ensured.

Preferably, the aspheric surfaces of the first lens (1), the second lens (2), the fourth lens (4) and the fifth lens (5) are all defined by the following equation of even aspheric surfaces:

Z=

in the formula, k is a conic coefficient of a conic surface, r is a lens height, c is a lens curvature, and A-G are coefficients of 4 th, 6 th, 8 th, 10 th, 12 th, 14 th and 16 th order terms of an aspheric polynomial.

Preferably, the minimum interval on the central axes of the first lens (1) and the second lens (2) is more than or equal to 3.47 mm.

Compared with the prior art, the invention has the beneficial effects that: the invention relates to a 6mm large-aperture athermalized glass-plastic hybrid lens, which adopts 1 piece of spherical glass and 4 pieces of non-spherical plastic to be mixed and combined, the total focal length F of the optical lens is more than or equal to 5.85 and less than or equal to 6.15, the aperture F # is more than or equal to 1.40 and less than or equal to 1.65, under the large focal length of the large aperture, the clear aperture is larger, the system has high contrast, no dark angle exists in the picture during shooting, simultaneously the aberration of the system is well corrected, the optical performance is good, the manufacturability is not sensitive to each lens, the lens surface type is simple and easy to manufacture, the processing cost is relatively low on the market, the cost performance is high, the characteristics of small volume, light weight, good performance and low cost are realized, and the invention can be matched with 5MP and 1/2.7 chips through reasonable lens material selection, focal power distribution and optical design optimization, the 24-hour all-weather high-definition monitoring is realized, day and night imaging is confocal, and real shooting pictures at high temperature of plus 80 ℃ and low temperature of minus 40 ℃ are clear.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an optical structure according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of an optical path structure according to a first embodiment of the present invention;

FIG. 3 is a normal temperature +20 ℃ defocus plot of 0.435-0.656um visible light in the embodiment of the present invention;

FIG. 4 is a low temperature-40 ℃ defocus plot of 0.435-0.656um visible light in accordance with an embodiment of the present invention;

FIG. 5 is a high temperature +80 ℃ defocus plot of 0.435-0.656um visible light in accordance with one embodiment of the present invention;

FIG. 6 is a field curvature diagram of 0.546um visible light according to an embodiment of the present invention;

FIG. 7 is a distortion diagram of visible light of 0.546um according to an embodiment of the present invention;

FIG. 8 is a graph of relative luminance of 0.546um in visible light according to one embodiment of the present invention;

FIG. 9 is a schematic view of an optical structure according to a second embodiment of the present invention;

fig. 10 is a schematic diagram of an optical path structure according to a second embodiment of the present invention;

FIG. 11 is a normal temperature +20 ℃ defocus plot of 0.435-0.656um visible light in the second embodiment of the present invention;

FIG. 12 is a low-temperature-40 ℃ defocus plot of 0.435-0.656um visible light in the second embodiment of the present invention;

FIG. 13 is a high temperature +80 ℃ defocus plot of 0.435-0.656um visible light in example II of the present invention;

FIG. 14 is a field curvature diagram of 0.546um visible light according to the second embodiment of the present invention;

FIG. 15 is a distortion plot of visible light 0.546um according to the second embodiment of the present invention;

FIG. 16 is a graph of relative luminance of 0.546um in visible light according to the second embodiment of the present invention;

in the figure: a first lens 1; a second lens 2; a third lens 3; a fourth lens 4; a fifth lens 5; an optical filter 6; a cover glass 7; an image pickup element 8; an aperture stop 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 16, in an embodiment of the present invention, a 6mm large-aperture athermalized glass-plastic hybrid lens includes an object-side surface on a side of a lens adjacent to an object plane, and an image-side surface on a side of the lens adjacent to an image plane;

referring to fig. 1, the image taking device includes, in order from an object side to an image side along an optical axis of the lens:

a first aspherical plastic lens (1) having a negative refractive power, the object-side surface of which is convex and the image-side surface of which is concave;

a second aspherical plastic lens (2) having a positive refractive power, the object-side surface of which is concave and the image-side surface of which is convex;

a third spherical glass lens (3) with positive focal power, wherein the object side surface is a convex surface, and the image side surface is a convex surface;

a fourth aspherical plastic lens (4) having a negative refractive power, the object-side surface of which is convex and the image-side surface of which is concave;

a fifth aspheric plastic lens (5) with positive focal power, wherein the object-side surface is a convex surface, and the image-side surface is a convex surface; an aperture diaphragm (9) is arranged between the second lens (2) and the third lens (3).

In order to make the optical system exhibit better performance, we need to select the lens material reasonably, distribute the focal length of each lens reasonably and optimize the optical system reasonably in the design process to correct the aberration of the system, and finally optimize the performance of the optical system.

Referring to fig. 1, in the embodiment of the present invention, the focal length of the first lens (1) is f1, the focal length of the second lens (2) is f2, the focal length of the third lens (3) is f3, the focal length of the fourth lens (4) is f4, the focal length of the fifth lens (5) is f5, the focal length of the entire lens is f, and the ratio of the respective lenses to the total focal length of the system satisfies the following conditions:

1.83≤|f1/f|≤3.47；

2.08≤|f2/f|≤7.52；

1.35≤|f3/f|≤1.50；

0.72≤|f4/f|≤0.97；

0.86≤|f5/f|≤1.01；

the field angle of the optical system is more than 67.2 degrees, the first lens adopts a lens with a meniscus negative focal power with the convex surface facing the object space, the optical system has the function of rapidly converging light rays, the abbe numbers of the first lens (1), the third lens (3) and the fifth lens (5) are more than 55.7, the abbe numbers of the second lens (2) and the fourth lens (4) are less than 24, the chromatic aberration of the system can be reduced by the matching, the problems of aberration, balance temperature drift, day and night confocal property and the like of the optical system are considered, and the focal length, the material and the R value of each lens respectively meet the following conditions:

f1

-21.34~-10.77

ND1

1.50~1.55

R11

+2.67~+3.41

R12

+1.78~+1.93

f2

+12.56~+45.00

ND2

1.60~1.66

R21

-4.63~-4.38

R22

-4.67~-3.53

f3

+8.11~+8.97

ND3

1.49~1.60

R31

+10.81~+13.60

R32

-9.21~-7.61

f4

-5.78~-4.26

ND4

1.60~1.66

R41

+53.04~+12.70E+5

R42

+2.74~+3.43

f5

+5.15~+6.19

ND5

1.50~1.55

R51

+4.37~+4.85

R52

-8.21~-6.42

The focal length of the integral optical system of the embodiment of the invention is f, the total optical length of the lens system is TTL, the optical back intercept of the lens system is OBFL, namely the distance from the point, closest to the image surface, of the image side surface of the fifth lens to the image surface, the total image height of a 1/2.7' chip matched with the lens system is IC, and the following relations are satisfied:

IC/TTL≥0.29；

3.42≤TTL/f≤3.80；

0.31≤OBFL/TTL≤0.35；

the aperture of the embodiment of the invention is F #, and satisfies that F # is more than or equal to 1.40 and less than or equal to 1.65, the focal length of the optical system is F, satisfies that F is more than or equal to 5.85 and less than or equal to 6.15, and the total optical length of the lens system is TTL, and satisfies that TTL is less than or equal to 22.5 mm.

The first lens (1) and the second lens (2) of the embodiment of the invention have larger distance, and the minimum distance on the central axis is more than or equal to 3.47 mm; the third lens (3), the fourth lens (4) and the fifth lens (5) are relatively close.

Referring to fig. 1 and fig. 2, which are respectively an optical structure schematic diagram and an optical path structure schematic diagram of a first embodiment of the present invention, the third lens (3) is a glass spherical surface, the first lens (1), the second lens (2), the fourth lens (4) and the fifth lens (5) are plastic aspheric surfaces, a total focal length of the system is 6.0mm, and an aperture value is 1.6.

In the following table, the Number of optical surfaces (Surface Number) in order from the object side to the image side, the radius of curvature R (unit: mm) of each lens, the center thickness d (unit: mm) of each lens, the refractive index (ND) and abbe constant (VD) of each lens, and the aspherical Surface K value (conc) of each lens are listed.

Watch 1

Number of noodles	Radius of curvature R	Center thickness d	Refractive index ND	Abbe constant VD	K
							1	3.13	1.20	1.53	55.7	-0.95
2	1.89	4.06			-0.74
						3	-4.50	2.34	1.64	22.5	0.62
4	-4.24	-0.88			-2.56
						5 (diaphragm)	Infinity	2.12
6	11.57	2.43	1.59	68.3
						7	-8.82	0.10
8	72.27	0.90	1.63	23.9	11.38
						9	3.30	0.17			-4.56
10	4.75	2.23	1.53	55.7	0.56
						11	-6.87	0.50			-7.50
12	Infinity	0.61	1.51	64.2
						13	Infinity	6.46

In Table one, the face numbers are numbered according to the order of the surfaces of the respective lenses, wherein "1" represents the front surface of the first lens (1), "2" represents the rear surface of the first lens (1), and so on; the radius of curvature represents the degree of curvature of the lens surface, positive values represent the surface curving to the image plane side, and negative values represent the surface curving to the object plane side, wherein "Infinity" represents the surface being planar; the thickness represents the central axial distance from the current surface to the next surface, the refractive index represents the deflection capability of the current lens material to light rays, and the Abbe number represents the dispersion characteristic of the current lens material to the light rays; the K value represents the magnitude of the best fitting conic coefficient for the aspheric surface.

The aspheric surfaces of the first lens element (1), the second lens element (2), the fourth lens element (4) and the fifth lens element (5) according to the first embodiment of the present invention can be defined by the following equation of even aspheric surfaces:

Z=

in the formula, k is conic coefficient, r is lens height, c is lens curvature, and A-G are coefficients of 4 th order, 6 th order, 8 th order, 10 th order, 12 th order, 14 th order and 16 th order of aspheric polynomial.

The following two lists have the coefficients of the aspheric surfaces of the optical surfaces:

watch two

Number of noodles

A

B

C

D

E

F

G

1

-1.87E-03

-2.30E-04

-5.15E-06

1.14E-06

-2.52E-09

-3.54E-09

1.08E-10

2

-3.78E-03

-6.86E-04

-4.48E-05

-9.88E-08

2.11E-06

-3.27E-07

1.30E-08

3

1.19E-03

7.92E-05

-4.66E-05

1.89E-06

1.22E-06

-2.90E-07

1.57E-08

4

-2.25E-03

8.43E-06

-1.66E-07

-6.87E-07

-1.31E-08

1.16E-08

-7.85E-10

8

-6.40E-03

6.88E-04

-6.79E-05

5.12E-06

-3.35E-07

1.70E-08

-4.32E-10

9

1.94E-03

-5.14E-04

4.68E-05

1.43E-06

-1.79E-07

-6.26E-08

4.58E-09

10

-3.60E-03

2.78E-04

-1.14E-04

2.24E-05

-1.54E-06

-1.68E-08

3.94E-09

11

-2.08E-03

2.63E-04

-7.00E-06

-2.27E-07

8.87E-08

3.14E-08

-2.11E-09

Referring to fig. 9 and 10, which are respectively an optical structure diagram and an optical path structure diagram of the second embodiment of the present invention, the third lens (3) is a spherical glass surface, the first lens (1), the second lens (2), the fourth lens (4) and the fifth lens (5) are aspheric plastic surfaces, the total focal length of the system is 6.0mm, and the aperture value is 1.6.

In the third following table, the Number of optical surfaces (Surface Number) in order from the object side to the image side, the radius of curvature R (unit: mm) of each lens, the center thickness d (unit: mm) of each lens, the refractive index (ND) and abbe constant (VD) of each lens, and the aspherical Surface K value (conc) of each lens are listed.

Watch III

Number of noodles	Radius of curvature R	Center thickness d	Refractive index ND	Abbe constant VD	K
							1	3.09	1.41	1.53	55.7	-0.79
2	1.89	4.97			-0.72
						3	-4.58	2.38	1.64	22.5	0.64
4	-4.06	-0.92			-2.83
						5 (diaphragm)	Infinity	1.75
6	11.47	2.30	1.59	68.3
						7	-8.52	0.10
8	217.24	0.70	1.63	23.9	2.45
						9	3.09	0.13			-4.16
10	4.47	2.35	1.53	55.7	0.44
						11	-6.89	3.97			-6.65
12	Infinity	0.61	1.51	64.2
						13	Infinity	2.60

In table three, the surface numbers are numbered according to the surface sequence of the respective lenses, wherein "1" represents the front surface of the first lens (1), "2" represents the rear surface of the first lens (1), and so on; the radius of curvature represents the degree of curvature of the lens surface, positive values represent the surface curving to the image plane side, and negative values represent the surface curving to the object plane side, wherein "Infinity" represents the surface being planar; the thickness represents the central axial distance from the current surface to the next surface, the refractive index represents the deflection capability of the current lens material to light rays, and the Abbe number represents the dispersion characteristic of the current lens material to the light rays; the K value represents the magnitude of the best fitting conic coefficient for the aspheric surface.

The aspheric surfaces of the first lens (1), the second lens (2), the fourth lens (4) and the fifth lens (5) in the second embodiment of the present invention can be defined by the following equation of even aspheric surfaces:

Z=

in the formula, k is a conic coefficient of a conic surface and is a lens height, c is a lens curvature, and A-G are coefficients of 4 th, 6 th, 8 th, 10 th, 12 th, 14 th and 16 th order of the aspheric polynomial.

The following four columns have the coefficients of the aspheric surface of each optical surface:

watch four

Number of noodles

A

B

C

D

E

F

G

1

-9.88E-04

-1.90E-04

-6.90E-06

5.04E-07

2.76E-08

-2.54E-09

4.95E-11

2

-1.71E-03

-7.99E-04

-2.08E-05

1.34E-06

1.69E-07

-1.55E-08

-1.22E-09

3

1.58E-03

2.39E-06

-3.80E-05

7.39E-06

7.49E-07

-5.91E-07

6.23E-08

4

-2.13E-03

-5.75E-06

-5.59E-07

-6.38E-07

-8.74E-09

7.17E-09

-3.46E-10

8

-7.02E-03

6.61E-04

-7.35E-05

4.99E-06

-2.96E-07

1.97E-08

-5.79E-10

9

1.68E-03

-6.01E-04

3.54E-05

6.85E-07

-1.06E-07

-3.55E-08

2.62E-09

10

-3.16E-03

2.25E-04

-1.18E-04

2.27E-05

-1.47E-06

4.43E-10

2.39E-09

11

-1.88E-03

2.97E-04

5.14E-07

-9.62E-08

3.19E-07

2.98E-08

-2.20E-09

Referring to fig. 3-5 and 11-13, the defocusing amount of the present invention at high temperature +80 ℃ and low temperature-40 ℃ is less than 4um, so that the small defocusing amount ensures that the lens can shoot high definition pictures at high temperature +80 ℃ and low temperature-40 ℃, and referring to fig. 8 and 16, the relative illumination of the present invention at the maximum visual field is more than 50%, the light incoming amount is sufficient, and the real shooting pictures can not have dark angles even if the lens is used in a dark environment.

In summary, the following steps: the 6mm large-aperture athermalized glass-plastic hybrid lens adopts 1 piece of spherical glass and 4 pieces of aspheric plastic to be mixed and combined, under the condition of achieving the same quality in the industry, each lens is insensitive, the lens surface type is simple and easy to manufacture, the processing cost is relatively low on the market, the lens has high cost performance, and the lens has the characteristics of small volume, light weight, good performance and low cost.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a 6mm big light ring does not have mixed camera lens of heat ization glass-plastic, defines the surface that lens is close to object plane one side and is the object side, and the surface that lens is close to image plane one side is the image side, its characterized in that, includes in proper order from the thing side to the image side along the lens optical axis:

a fifth lens (5) which is an aspheric plastic lens with positive focal power, and the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface;

the optical filter (6), the optical filter (6) is made of H-K9L;

an image pickup element (8);

a protective glass (7) integrated on the image capturing element (8);

1.83≤|f1/f|≤3.47；

2.08≤|f2/f|≤7.52；

1.35≤|f3/f|≤1.50；

0.72≤|f4/f|≤0.97；

0.86≤|f5/f|≤1.01；

2. The 6mm large-aperture athermalized glass-plastic hybrid lens according to claim 1, wherein the focal length, refractive index and curvature radius of the first lens (1) to the fifth lens (5) respectively satisfy the following conditions:

f1 -21.34~-10.77 ND1 1.50~1.55 R11 +2.67~+3.41 R12 +1.78~+1.93 f2 +12.56~+45.00 ND2 1.60~1.66 R21 -4.63~-4.38 R22 -4.67~-3.53 f3 +8.11~+8.97 ND3 1.49~1.60 R31 +10.81~+13.60 R32 -9.21~-7.61 f4 -5.78~-4.26 ND4 1.60~1.66 R41 +53.04~+12.70E+5 R42 +2.74~+3.43 f5 +5.15~+6.19 ND5 1.50~1.55 R51 +4.37~+4.85 R52 -8.21~-6.42

3. The athermalized glass-plastic hybrid lens with a 6mm large aperture as claimed in claim 1, wherein IC/TTL is not less than 0.29;

3.42≤TTL/f≤3.80；

0.31≤OBFL/TTL≤0.35；

in the relation, f is the focal length of the lens optical system; TTL is the total length of the lens optical system; OBFL is the optical rear intercept of the lens system, namely the distance from the point, closest to the image surface, of the image side surface of the fifth lens (5) to the image surface; the IC is the full image height of the 1/2.7' chip collocated with the lens system.

4. The 6mm large-aperture athermalized glass-plastic hybrid lens of claim 1, wherein F # is the aperture of the optical lens, satisfying 1.40 ≤ F # < 1.65, F is the focal length of the optical lens, satisfying 5.85 ≤ F < 6.15, TTL is the total length of the lens optics, satisfying TTL < 22.5 mm.

5. A 6mm large aperture athermalized glass-plastic hybrid lens according to claim 1, wherein the aspheric surfaces of the first lens (1), the second lens (2), the fourth lens (4) and the fifth lens (5) are all defined by the following equation for even aspheric surfaces:

Z=

6. The 6mm large-aperture athermalized glass-plastic hybrid lens as claimed in claim 1, wherein the minimum interval on the central axes of the first lens (1) and the second lens (2) is more than or equal to 3.47 mm.