CN217821062U

CN217821062U - Day and night type athermalized high-definition glass-plastic hybrid lens with large aperture of 8mm

Info

Publication number: CN217821062U
Application number: CN202123323845.9U
Authority: CN
Inventors: 周欧; 殷海明
Original assignee: Dongguan Changyi Photoelectric Co ltd
Current assignee: Dongguan Changyi Photoelectric Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-11-15
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a mixed camera lens is moulded to big light ring of 8mm day and night type athermalization high clear glass, the surface of the adjacent object plane one side of definition lens is the object side, and the surface of the adjacent image plane one side of lens is the image side, includes according to the preface by thing side to image side along the camera lens optical axis: 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; and the fifth lens is an aspheric plastic lens with positive focal power. This day and night type of 8mm big light ring does not have high clear glass of heat moulds hybrid lens adopts 1 piece of spherical glass and 5 pieces of aspheric surface plastics to mix the combination, and aperture value F # can reach 1.3, can realize 24 hours all-weather high definition control, and it is clear to actually shoot the picture at high temperature +80 ℃ and low temperature-40 ℃, in the manufacturability, each lens is insensitive, and lens face type is simple and easy to be made, has higher price/performance ratio.

Description

Day and night type athermalized high-definition glass-plastic hybrid lens with large aperture of 8mm

Technical Field

The utility model relates to an optical imaging technology field, the utility model particularly relates to a 8mm big light ring day and night type does not have high clear glass of heat and moulds hybrid lens.

Background

In recent years, the development of the security monitoring field is better and better, a plurality of series of products are already put out by the monitoring lens aiming at different use purposes or environments, people pursue the high performance of the lens and the lowest cost of the lens, and the monitoring camera with high definition pixels and low cost gradually occupies the market in the future. The existing lens in the market has the problems of poor image quality and high cost, and the performance and the cost of the lens are to be improved; aiming at the defects of the prior art, the day and night type athermalized high-definition glass-plastic hybrid lens with the large aperture of 8mm is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned at least one kind of problem.

A day and night type athermalized high-definition glass-plastic hybrid lens with a large aperture of 8mm 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 is characterized by sequentially comprising the following components 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;

an aperture stop (10);

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;

a fourth lens (4) which is an aspherical plastic lens having a negative focal power, and has a concave object-side surface and a concave image-side 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 sixth lens (6) is an aspheric plastic lens, and the object side surface of the sixth lens is a convex surface while the image side surface of the sixth lens is a concave surface;

a filter (7), the filter (7) being made of H-K9L;

a protective glass (8) integrated on the image-capturing element (9);

an image pickup element (9);

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

1.93≤|f1/f|≤3.64；

1.60≤|f2/f|≤2.64；

1.09≤|f3/f|≤1.51；

0.45≤|f4/f|≤0.54；

0.60≤|f5/f|≤0.68；

3.00≤|f6/f|≤144.26；

in the relation, "f" is the focal length of the lens optical system, "f1" is the focal length of the first lens (1), "f2" is the focal length of the second lens (2), and so on.

Preferably, the focal length, refractive index, and radius of curvature of the first lens (1) to the sixth lens (6) satisfy the following conditions:

f1

-28.67~-15.37

ND1

1.50~1.55

R11

+3.83~+4.69

R12

+2.26~+2.82

f2

+13.03~+20.91

ND2

1.60~1.66

R21

-10.50~-4.86

R22

-5.68~-4.19

f3

+8.69~+12.16

ND3

1.43~1.60

R31

+6.49~+8.32

R32

-106.01~-18.76

f4

-4.34~-3.56

ND4

1.60~1.66

R41

-605.31~-21.85

R42

+2.61~+2.82

f5

+4.85~+5.40

ND5

1.50~1.55

R51

+3.49~+3.88

R52

-11.14~-5.64

f6

-1839.88~+1151.14

ND5

1.60~1.66

R51

+4.47~+4.92

R52

+4.05~+6.28

in the above table, "f1" is a focal length of the first lens (1), "ND1" is a refractive index of the first lens (1), "R11, R12" is front and rear surface curvature radii of the first lens (1), "f2" is a focal length of the second lens (2), "ND2" is a refractive index of the second lens (2), "R21, R22" is a front and rear surface curvature radius of the second lens (2), "f3" is a focal length of the third lens (3), "ND3" is a refractive index of the third lens (3), "R31, R32" is a front and rear surface curvature radius of the third lens (3), "f4" is a focal length of the fourth lens (4), "ND4" is a refractive index of the fourth lens (4), "R41, R42" is a front and rear surface curvature radius of the fourth lens (4), "f5" is a focal length of the fifth lens (5), "ND5" is a refractive index of the fifth lens (5), "R51, R52" is a refractive index of the fifth lens (5), "sixth lens (6)" is a front and "is a negative curvature radius of the sixth lens (6)," R6 "is a front and" is a negative radius of the sixth lens (6), "f 6)," and "is a radius of the sixth lens (6)," is a radius, and "is a radius of the sixth lens (6)," f 6), "the sixth lens (6) in the same direction.

Preferably, IC/TTL is more than or equal to 0.28;

4.38≤OBFL/TTL≤5.82；

in the relational expression, 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 sixth lens (6) to the image surface; IC is the full image height of the lens system.

Preferably, the aperture of the lens is F #, and the requirement that F #, is more than or equal to 1.30, and the total length of the lens optical system is TTL, and the requirement that TTL is less than or equal to 22.5mm.

Preferably, the aspheric surfaces of the first lens (1), the second lens (2), the fourth lens (4), the fifth lens (5) and the sixth lens (6) 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 maximum distance AC4 on the central axes of the fourth lens (4) and the fifth lens (5) is less than or equal to 0.23mm.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses 8mm big light ring day and night type does not have high clear glass of heat and moulds hybrid lens, consequently the utility model aims to provide a: compare with current camera lens on the market, it has the pixel height and advantage with low costs, the utility model discloses a 1 piece spherical glass and 5 mixed combinations of aspheric surface plastics, the aberration of system has been rectified to the at utmost, makes its performance excellent, has characteristics small, light in weight, good and with low costs of performance, moreover the utility model discloses through reasonable lens material selection, focus power distribution and optical design optimization, 8 MP's that can arrange in pairs or groups chip realizes 24 hours all-weather high definition control.

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 needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 inventive exercise.

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

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

fig. 3 is a schematic view of an optical structure according to a second embodiment of the present invention;

fig. 4 is a schematic view of an optical path structure according to a 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; a sixth lens 6; an optical filter 7; a cover glass 8; an image pickup element 9; an aperture stop 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention provides a technical solution: an 8mm large-aperture day-night athermalized high-definition glass-plastic hybrid lens, wherein a surface of a lens adjacent to an object plane is an object side surface, and a surface of the lens adjacent to an image plane is an image side surface, as shown in fig. 1, sequentially comprising, from an object side to an image side along a lens optical axis:

a first aspheric plastic lens 1 with negative focal 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;

the third spherical glass lens 3 with positive focal power has a convex object-side surface and a convex image-side surface;

a fourth aspherical plastic lens 4 having a negative refractive power, which has a concave object-side surface and a concave image-side surface;

a fifth aspherical plastic lens 5 having a positive refractive power, which has a convex object-side surface and a convex image-side surface;

the sixth lens element 6 is an aspheric plastic lens with a convex object-side surface and a concave image-side surface; between the second lens 2 and the third lens 3 is an aperture stop 10.

In order to enable an optical system to have better performance, in the design process, lens materials are reasonably selected, focal lengths of all lenses are reasonably distributed, the optical system is reasonably optimized, performance of the optical system is finally optimized, the imaging quality of the optical system is affected by the existence of aberration of the optical system generally, aberration correction is the key point of the optimized optical system, and various methods for correcting the aberration are provided, for example, lenses with different refractive indexes and larger abbe numbers are selected to be matched for use, chromatic aberration and spherical aberration can be eliminated to a certain degree, and the focal lengths and shapes of all lenses are reasonably distributed and optimized, and the aberration of the system can also be corrected.

Referring to fig. 1, the utility model provides a first lens 1's focus is f1, and second lens 2's focus is f2, and third lens 3's focus is f3, and fourth lens 4's focus is f4, and fifth lens 5's focus is f5, and sixth lens 6's focus is f6, and the focus of whole camera lens is f, and the ratio of the total focal length of each lens and system satisfies the following condition:

1.93≤|f1/f|≤3.64；

1.60≤|f2/f|≤2.64；

1.09≤|f3/f|≤1.51；

0.45≤|f4/f|≤0.54；

0.60≤|f5/f|≤0.68；

3.00≤|f6/f|≤144.26；

the utility model discloses first lens adopts the convex surface to the lens of the crescent negative focal power of object space, and its effect is the light of assembling fast, the abbe number of first lens 1, third lens 3 and fifth lens 5 is greater than 55.7, the abbe number of second lens 2, fourth lens 4 and sixth lens 6 is less than 24, and such collocation can reduce the colour difference, considers optical system's aberration and the problem of balanced temperature drift, and the focus, material and the lens R value of each lens satisfy following condition respectively:

f1

-28.67~-15.37

ND1

1.50~1.55

R11

+3.83~+4.69

R12

+2.26~+2.82

f2

+13.03~+20.91

ND2

1.60~1.66

R21

-10.50~-4.86

R22

-5.68~-4.19

f3

+8.69~+12.16

ND3

1.43~1.60

R31

+6.49~+8.32

R32

-106.01~-18.76

f4

-4.34~-3.56

ND4

1.60~1.66

R41

-605.31~-21.85

R42

+2.61~+2.82

f5

+4.85~+5.40

ND5

1.50~1.55

R51

+3.49~+3.88

R52

-11.14~-5.64

f6

-1839.88~+1151.14

ND5

1.60~1.66

R51

+4.47~+4.92

R52

+4.05~+6.28

in the above table, "f1" is a focal length of the first lens 1, "ND1" is a refractive index of the first lens 1, "R11, R12" is front and rear surface curvature radii of the first lens 1, "f2" is a focal length of the second lens 2, "ND2" is a refractive index of the second lens 2, "R21, R22" is front and rear surface curvature radii of the second lens 2, "f3" is a focal length of the third lens 3, "ND3" is a refractive index of the third lens 3, "R31, R32" is front and rear surface curvature radii of the third lens 3, "f4" is a focal length of the fourth lens 4, "ND4" is a refractive index of the fourth lens 4, "R41, R42" is a front and rear surface curvature radius of the fourth lens 4, "f5" is a focal length of the fifth lens 5, "ND5" is a refractive index of the fifth lens 5, "R51, R52" is a front and rear surface curvature radius of the fifth lens 5, "f6" is a focal length of the sixth lens 6, "ND5" is a refractive index of the sixth lens 6, R62, "R6" is a negative curvature radius, and the like.

The utility model discloses lens system's optical total length is TTL, and lens system's optical back intercept is OBFL, and sixth lens looks facial features is apart from the nearest a bit to the distance of image planes promptly, and lens system's full image height is IC, and they satisfy following relation:

IC/TTL≥0.28；

4.38≤OBFL/TTL≤5.82；

the utility model discloses the light ring is F #, satisfies F # > 1.30, and the total optical length of lens system is TTL, satisfies TTL and is less than or equal to 22.5mm.

The utility model discloses third lens 3, fourth lens 4, fifth lens 5 and the 6 center pin of sixth lens are gone up apart from being closer to, maximum interval AC3 is not more than 0.23mm on the center pin of fourth lens 4 and fifth lens 5.

Referring to fig. 1 and fig. 2, which are an optical structure diagram and an optical path structure diagram of a first embodiment of the present invention, respectively, the third lens 3 is a glass spherical surface, the first lens 1, the second lens 2, the fourth lens 4, the fifth lens 5, and the sixth lens 6 are plastic aspheric surfaces, a total focal length F =8.00mm, and an aperture F # =1.30.

The following table lists, in order from the object side to the image side, the Surface Number (Surface Number), the radius of curvature R (unit: mm) of each lens, the central thickness d (unit: mm) of each lens, the refractive index (ND) and abbe constant (VD) of each lens, and the aspheric K value (conc) of each lens according to the first embodiment of the present invention.

Watch 1

Number of noodles	Radius of curvature R	Center thickness d	Refractive index ND	Abbe constant VD	K
							1	4.31	2.07	1.53	55.7	-0.71
2	2.45	3.97			-0.91
						3	-7.71	1.36	1.64	22.5	-0.42
4	-4.62	-0.80			-5.41
						5 (diaphragm)	Infinity	1.37
6	8.32	2.23	1.59	68.3
						7	-20.86	0.22
8	-47.35	1.05	1.63	23.9	158.28
						9	2.67	0.11			-4.45
10	3.70	3.80	1.53	55.7	0.03
						11	-6.30	0.23			-3.00
12	4.56	1.40	1.63	23.9	0.74
						13	4.29	2.20			0.49
14	Infinity	0.61	1.51	64.2
						15	Infinity	2.46

In table one, the surface numbers are numbered according to the surface order of the respective lenses of embodiment one, where "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 utility model provides a first lens 1, second lens 2, fourth lens 4, fifth lens 5 and the aspheric surface of sixth lens 6 can all be injectd with the following equation of even aspheric surface:

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 are the coefficients of the aspheric surfaces of the first optical surface of the present invention:

watch two

Number of noodles

A

B

C

D

E

F

G

1

-1.48E-03

-1.03E-04

3.17E-07

1.29E-07

2.92E-09

-1.57E-10

-3.34E-13

2

-1.27E-03

-2.78E-04

-1.17E-05

2.86E-06

1.19E-07

-3.45E-08

1.87E-09

3

1.16E-03

-1.19E-04

-3.95E-06

-6.36E-07

9.57E-08

-1.77E-09

2.96E-11

4

-3.79E-03

3.41E-04

-3.67E-05

1.29E-06

4.87E-08

-5.68E-09

1.47E-10

8

-8.79E-03

2.34E-03

-3.95E-04

4.52E-05

-3.19E-06

1.21E-07

-1.79E-09

9

1.09E-04

-1.61E-04

8.92E-05

1.75E-06

-3.61E-06

4.41E-07

-1.52E-08

10

-7.54E-03

3.57E-04

-1.32E-04

6.50E-05

-1.40E-05

1.29E-06

-4.29E-08

11

9.92E-04

2.65E-04

-2.97E-05

-4.50E-08

-1.27E-07

3.90E-08

-1.96E-09

12

-5.58E-03

4.21E-04

-2.04E-05

-2.23E-06

-6.73E-08

3.44E-08

-2.10E-09

13

-8.62E-03

7.08E-04

-1.09E-05

-2.65E-06

-1.58E-07

2.01E-08

4.09E-10

Referring to fig. 3 and 4, they are the optical structure diagram and the optical path structure diagram of the second embodiment of the present invention, respectively, the third lens 3 is a glass spherical surface, the first lens 1, the second lens 2, the fourth lens 4, the fifth lens 5 and the sixth lens 6 are plastic aspheric surfaces, the total focal length of the system is 8.00mm, and the aperture value is 1.60.

In the following table three, 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 central thickness d (unit: mm) of each lens, the refractive index (ND) and abbe constant (VD) of each lens, and the aspheric K value (conc) of each lens are listed, respectively, in embodiment two.

Watch III

Number of noodles	Radius of curvature R	Center thickness d	Refractive index ND	Abbe constant VD	K
							1	4.49	1.90	1.53	55.7	-0.69
2	2.62	3.56			-0.73
						3	-5.99	2.12	1.64	22.5	0.57
4	-4.38	-1.01			-4.00
						5 (diaphragm)	Infinity	1.23
6	7.58	2.14	1.59	68.3
						7	-42.23	0.10
8	-138.93	1.41	1.63	23.9	26.67
						9	2.79	0.11			-4.82
10	3.83	3.97	1.53	55.7	0.06
						11	-6.01	0.05			-9.50
12	4.60	0.85	1.63	23.9	-0.05
						13	4.10	2.00			-0.16
14	Infinity	0.61	1.51	64.2
						15	Infinity	3.61

In table three, the surface numbers are numbered according to the surface order of the respective lenses of embodiment two, where "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 embodiment of the present invention provides that the aspheric surfaces of the first lens 1, the second lens 2, the fourth lens 4, the fifth lens 5 and the sixth lens 6 can be defined by the following equation of even aspheric surface:

Z=

The following four columns have coefficients of the aspheric surfaces of the optical surfaces of embodiment two of the present invention:

watch four

Number of noodles

A

B

C

D

E

F

G

1

-1.43E-03

-6.95E-05

9.38E-07

-6.57E-08

1.77E-08

-7.84E-10

1.09E-11

2

-2.24E-03

-2.45E-04

1.41E-05

-3.99E-06

7.15E-07

-5.00E-08

1.29E-09

3

6.76E-04

1.06E-06

-1.01E-05

-7.72E-07

3.11E-07

-4.15E-08

1.52E-09

4

-3.87E-03

3.64E-04

-3.52E-05

1.37E-06

6.31E-08

-1.12E-08

3.65E-10

8

-8.31E-03

2.33E-03

-3.99E-04

4.52E-05

-3.18E-06

1.16E-07

-1.43E-09

9

7.55E-06

-1.62E-04

1.01E-04

6.73E-07

-3.86E-06

4.65E-07

-1.66E-08

10

-6.93E-03

3.84E-04

-1.39E-04

6.62E-05

-1.37E-05

1.23E-06

-4.04E-08

11

1.76E-04

3.83E-05

-4.15E-05

1.48E-05

-2.22E-06

1.86E-07

-6.51E-09

12

-9.28E-03

4.20E-04

-6.83E-05

1.59E-05

-1.62E-06

7.24E-08

-7.71E-11

13

-1.58E-02

1.87E-03

-3.10E-04

4.62E-05

-4.06E-06

1.59E-07

5.99E-11

In summary, the following steps: this 8mm big light ring day and night type does not have high clear glass of heat and moulds hybrid lens, adopt 1 piece spherical glass and 5 mixed combinations of aspheric surface plastics, simple structure, under reaching equal quality in the trade, its each lens is insensitive, the simple easy manufacturing of lens face type, its processing cost is also low on the market relatively, has very high price/performance ratio, can realize small, light in weight, characteristics good performance and with low costs, moreover the utility model discloses through reasonable lens material selection, focal power distribution and optical design optimize, 8 MP's that can arrange in pairs chip realizes 24 hours all-weather high definition control, and system's aperture value F # can accomplish 1.3, and the luminance of shooting the picture has been guaranteed to big aperture value.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 day and night type does not have high clear glass of heat and moulds hybrid lens of 8mm big light ring, 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 camera lens optical axis:

an aperture stop (10);

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

the optical filter (7), the optical filter (7) is made of H-K9L;

a protective glass (8) integrated on the image-capturing element (9);

an image pickup element (9);

1.93≤|f1/f|≤3.64；

1.60≤|f2/f|≤2.64；

1.09≤|f3/f|≤1.51；

0.45≤|f4/f|≤0.54；

0.60≤|f5/f|≤0.68；

3.00≤|f6/f|≤144.26；

2. The round-the-clock type athermalized high-clarity glass-plastic hybrid lens with 8mm large aperture according to claim 1, wherein the focal length, refractive index and curvature radius of the first lens (1) to the sixth lens (6) respectively satisfy the following conditions:

f1 -28.67~-15.37 ND1 1.50~1.55 R11 +3.83~+4.69 R12 +2.26~+2.82 f2 +13.03~+20.91 ND2 1.60~1.66 R21 -10.50~-4.86 R22 -5.68~-4.19 f3 +8.69~+12.16 ND3 1.43~1.60 R31 +6.49~+8.32 R32 -106.01~-18.76 f4 -4.34~-3.56 ND4 1.60~1.66 R41 -605.31~-21.85 R42 +2.61~+2.82 f5 +4.85~+5.40 ND5 1.50~1.55 R51 +3.49~+3.88 R52 -11.14~-5.64 f6 -1839.88~+1151.14 ND5 1.60~1.66 R51 +4.47~+4.92 R52 +4.05~+6.28

3. The day-night type athermal high-definition glass-plastic hybrid lens with 8mm large aperture as claimed in claim 1,

IC/TTL≥0.28；

4.38≤OBFL/TTL≤5.82；

4. The day and night type athermalized high-definition glass-plastic hybrid lens with 8mm large aperture as claimed in claim 1, wherein the aperture of the lens is F #, which satisfies F # > 1.30, the total length of the lens optical system is TTL, which satisfies TTL ≤ 22.5mm.

5. The day-night athermalized high-definition glass-plastic hybrid lens with 8mm large aperture according to claim 1, wherein the aspheric surfaces of the first lens (1), the second lens (2), the fourth lens (4), the fifth lens (5) and the sixth lens (6) are all defined by the following equation of even aspheric surface:

Z=

Figure DEST_PATH_830883DEST_PATH_IMAGE002

in the formula, k is a conic coefficient of a quadric 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.

6. The day-night type athermalized high-definition glass-plastic hybrid lens with a large aperture of 8mm as claimed in claim 1, wherein the maximum interval AC4 on the central axis of the fourth lens (4) and the fifth lens (5) is not less than 0.23mm.