CN208351116U

CN208351116U - Glass modeling mixing tight shot

Info

Publication number: CN208351116U
Application number: CN201821110077.4U
Authority: CN
Inventors: 贺保丁
Original assignee: Sunny Optics Zhongshan Co Ltd
Current assignee: Sunny Optics Zhongshan Co Ltd
Priority date: 2018-07-13
Filing date: 2018-07-13
Publication date: 2019-01-08
Anticipated expiration: 2028-07-13

Abstract

The utility model relates to a kind of glass to mould mixing tight shot, be made of glass lens and plastic lens, comprising: front lens group, diaphragm and the rear lens group being arranged successively along optical axis from object side to image side；The front lens group is made of the first lens, the second lens and the third lens being arranged successively along optical axis from object side to image side；The rear lens group along the 4th lens, the 5th lens, the 6th lens and the 7th lens that optical axis is arranged successively from object side to image side by forming；First lens, second lens and the 5th lens are negative-power lenses；The third lens, the 4th lens, the 6th lens and the 7th lens are positive power lens；4th lens and the 5th lens constitute cemented doublet group.The glass modeling mixing tight shot of the utility model realizes high-resolution in the case where FNO≤2.0, takes into account the service performances such as day and night confocal, -40 DEG C to the 80 DEG C not empty cokes of camera lens, expands the application range of camera lens.

Description

Glass modeling mixing tight shot

Technical field

The utility model relates to optical imaging field more particularly to a kind of glass modeling mixing tight shots.

Background technique

In recent years, with the development of Chinese national economy, people's Travel Range is more and more wider, in addition the increasing of floating population Add, people are for public place, residential quarter, hospital of school, the demand of the densely populated local safety monitoring such as commercial square It is higher and higher, therefore more and more safety monitoring camera lens enters market, and requirement of the people for safety monitoring is also increasingly It is high.Currently, the requirement to safety monitoring camera lens is concentrated mainly on all weather operations, i.e. day and night.In addition to solving monitoring The problem of dead angle, increasing aperture slot is a highly important index.

The existing universal heavier-weight of camera lens, optics overall length is longer, is not able to satisfy the requirement of miniaturization.Although some camera lenses Camera lens weight saving, optics overall length reduces, but its FNO is larger, and the cost is relatively high.Theoretically FNO is smaller, and F-number is got over Greatly, also bigger into the luminous flux of optical system, the brightness of image planes is higher, therefore uses larger light for day and night lens The luminous flux that circle raising night enters system is necessary.

Summary of the invention

One purpose of the utility model is to solve the above problems, provide it is a kind of can day and night glass modeling mixing fixed-focus Camera lens.

For achieving the above object, the utility model provides a kind of glass modeling mixing tight shot, by glass lens and modeling Expect lens composition, comprising: front lens group, diaphragm and the rear lens group being arranged successively along optical axis from object side to image side；

The front lens group is by the first lens, the second lens and the third lens that are arranged successively along optical axis from object side to image side Composition；

The rear lens group is by the 4th lens, the 5th lens, the 6th lens that are arranged successively along optical axis from object side to image side It is formed with the 7th lens；It is characterized in that,

First lens, second lens and the 5th lens are negative-power lenses；

The third lens, the 4th lens, the 6th lens and the 7th lens are positive power lens.

One aspect according to the present utility model, along the direction of object side to image side,

First lens are male-female lens；

Second lens are concave-convex lens；

4th lens and the 5th lens constitute cemented doublet group.

One aspect according to the present utility model, first lens, second lens, the third lens and described 7th lens are plastic aspheric lens；

4th lens, the 5th lens and the 6th lens are glass spherical lens.

One aspect according to the present utility model, half image height h of the camera lens and the effective focal length f of the camera lens, which meet, to close It is formula: h/f > 0.9.

One aspect according to the present utility model, the focal length f1 of first lens, the focal length f3 of the third lens and described The focal length f6 of 6th lens and the effective focal length f of the camera lens meet relational expression: -1.80 < f1/f < -1.35；4.90<f3/f< 9.36；2.48<f6/f<2.90.

It is the combined focal length f23 of one aspect according to the present utility model, second lens and the third lens, described The combined focal length of the combined focal length f45 and the 6th lens and the 7th lens of 4th lens and the 5th lens The effective focal length f of f67 and the camera lens meets relational expression: 4.0 < f23/f < 6.36；4.71<f45/f<6.16；2.20<f67/f< 2.65。

One aspect according to the present utility model, the value range of the refractive index nd4 and Abbe number vd4 of the 4th lens It is respectively as follows: 1.40<nd4<1.65, vd4>75；

The value range of the refractive index nd5 and Abbe number vd5 of 5th lens are respectively as follows: 1.68<nd5<2.10, and vd5> 22。

One aspect according to the present utility model, the value range of the refractive index nd6 and Abbe number vd6 of the 6th lens It is respectively as follows: 1.40<nd6<1.65, vd6>75.

One aspect according to the present utility model, the combination focal power Ff of the front lens group and effective coke of the camera lens Meet relational expression: -4.90 < Ff/f < -3.45 away from f；

The combination focal power Bf of the rear lens group and the effective focal length f of the camera lens meet relational expression: 1.62 < Bf/f < 1.94。

One aspect according to the present utility model, the optic back focal BFL of the camera lens and the optics overall length TTL of the camera lens Meet relational expression: 3.0 < TTL/BFL < 4.0；

Meanwhile the effective focal length f of the optics overall length TTL of the camera lens and the camera lens meets relational expression: 5.40 < TTL/f < 7.0。

One aspect according to the present utility model, the F number FNO of the camera lens are as follows: FNO≤2.0.

A scheme according to the present utility model, the glass modeling mixing tight shot of the utility model can realize the big light of F1.4 Circle, guarantees that the optical system of camera lens has enough light passing amounts, even if night image planes still have relatively high brightness, realizes day Night is confocal, can be with the function of day and night.

The velocity of wave mixing tight shot of a scheme according to the present utility model, the utility model uses 3 glass spherical surfaces The optical texture for the 3G4P that eyeglass and 4 plastic aspherical element eyeglasses combine, make the camera lens of the utility model can reach FOV >= 110 ° of big field angle and with FNO≤2.0 large apertures are to guarantee that system has enough light passing amounts, even if night image planes still have There is relatively high brightness.

The utility model is good by glass and the combination of plastic lens and the matching system image quality of each lens material It is good, while there is preferable imaging effect under visible light, and make it is infrared also have under the premise of not focusing again with The identical imaging effect of visible light, while night realizes clearly bright imaging picture, i.e., situation clear in visual light imaging It is lower to be realized day and night confocal to infrared light also at sharply defined image without focusing again.

The utility model efficiently solves camera lens by the combination of glass and plastic lens and the matching of each lens material The problem of resolving power is with temperature drift, being capable of not empty coke, realization temperature-compensating in -40 DEG C~80 DEG C of range of temperature.

The utility model by the optical texture of 3G4P so that the utility model have while guaranteeing performance it is lower Cost；The use of plastic aspherical element eyeglass also effectively reduces the length of system simultaneously, so that system bulk is small light-weight.

Detailed description of the invention

Fig. 1 schematically shows a kind of structure chart of the glass modeling mixing tight shot of embodiment according to the present utility model；

Fig. 2 is MTF figure of the modeling mixing tight shot of glass described in specific embodiment one under 20 degree of room temperature, visible light；

Fig. 3 is the modeling mixing of glass described in specific embodiment one tight shot 125lp/mm under 20 degree of room temperature, visible light Through-Focus-MTF figure；

Fig. 4 is the modeling mixing tight shot of glass described in specific embodiment one in 20 degree of room temperature, night infrared 125lp/mm Through-Focus-MTF figure；

Fig. 5 is the modeling of glass described in specific embodiment one mixing tight shot 125lp/mm under the degree of low temperature -40, visible light Through-Focus-MTF figure；

Fig. 6 is the modeling mixing of glass described in specific embodiment one tight shot 125lp/mm under 80 degree of high temperature, visible light Through-Focus-MTF figure；

Fig. 7 schematically shows the structure of the glass modeling mixing tight shot of second of embodiment according to the present utility model Figure；

Fig. 8 is MTF figure of the modeling mixing tight shot of glass described in specific embodiment two under 20 degree of room temperature, visible light；

Fig. 9 is the modeling mixing of glass described in specific embodiment two tight shot 125lp/mm under 20 degree of room temperature, visible light Through-Focus-MTF figure；

Figure 10 is the modeling mixing tight shot of glass described in specific embodiment two in 20 degree of room temperature, night infrared 125lp/mm Through-Focus-MTF figure；

Figure 11 is the modeling of glass described in specific embodiment two mixing tight shot 125lp/mm under the degree of low temperature -40, visible light Through-Focus-MTF figure；

Figure 12 is the modeling mixing of glass described in specific embodiment two tight shot 125lp/mm under 80 degree of high temperature, visible light Through-Focus-MTF figure；

Figure 13 schematically shows the structure of the glass modeling mixing tight shot of the third embodiment according to the present utility model Figure；

Figure 14 is MTF figure of the modeling mixing tight shot of glass described in specific embodiment three under 20 degree of room temperature, visible light；

Figure 15 is the modeling mixing of glass described in specific embodiment three tight shot 125lp/mm under 20 degree of room temperature, visible light Through-Focus-MTF figure；

Figure 16 is the modeling mixing tight shot of glass described in specific embodiment three in 20 degree of room temperature, night infrared 125lp/mm Through-Focus-MTF figure；

Figure 17 is the modeling of glass described in specific embodiment three mixing tight shot 125lp/mm under the degree of low temperature -40, visible light Through-Focus-MTF figure；

Figure 18 is the modeling mixing of glass described in specific embodiment three tight shot 125lp/mm under 80 degree of high temperature, visible light Through-Focus-MTF figure；

Figure 19 schematically shows the structure of the glass modeling mixing tight shot of the 4th kind of embodiment according to the present utility model Figure；

Figure 20 is MTF figure of the modeling mixing tight shot of glass described in specific embodiment four under 20 degree of room temperature, visible light；

Figure 21 is the modeling mixing of glass described in specific embodiment four tight shot 125l p/mm under 20 degree of room temperature, visible light Through-Focus-MTF figure；

Figure 22 is the modeling mixing tight shot of glass described in specific embodiment four in 20 degree of room temperature, night infrared 125l p/mm Through-Focus-MTF figure；

Figure 23 is the modeling of glass described in specific embodiment four mixing tight shot 125l p/mm under the degree of low temperature -40, visible light Through-Focus-MTF figure；

Figure 24 is the modeling mixing of glass described in specific embodiment four tight shot 125l p/mm under 80 degree of high temperature, visible light Through-Focus-MTF figure.

Specific embodiment

It, below will be to implementation in order to illustrate more clearly of the utility model embodiment or technical solution in the prior art Attached drawing needed in mode is briefly described.It should be evident that the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skills without creative efforts, can be with It obtains other drawings based on these drawings.

When being described for the embodiments of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", orientation or positional relationship is expressed by "outside" Based on orientation or positional relationship shown in relevant drawings, it is merely for convenience of describing the present invention and simplifying the description, without It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore on Stating term should not be understood as limiting the present invention.

The utility model is described in detail with reference to the accompanying drawings and detailed description, embodiment cannot herein one One repeats, but therefore the embodiments of the present invention is not defined in following implementation.

Fig. 1 schematically shows a kind of structure chart of the glass modeling mixing tight shot of embodiment according to the present utility model. As shown in Figure 1, glass modeling mixing tight shot according to the present utility model includes before being arranged successively from object side to image side along optical axis Lens group A, diaphragm S and rear lens group B.In the present embodiment, as shown in Figure 1, front lens group A be by along optical axis from object side What the first lens 1, the second lens 2 and the third lens 3 being arranged successively to image side formed.Rear lens group B be then by along optical axis from The 4th lens 4, the 5th lens 5, the 6th lens 6 and the 7th lens 7 composition that object side to image side is arranged successively.Diaphragm S is to set It sets between front lens group A and rear lens group B, i.e. diaphragm S is arranged between the third lens 3 and the 4th lens 4.

In the present invention, the first lens 1, the second lens 2 and the 5th lens 5 are negative-power lenses；Third is saturating Mirror 3, the 4th lens 4, the 6th lens 6 and the 7th lens 7 are positive power lens.Wherein, the 4th lens 4 and 5 structure of the 5th lens At the cemented doublet group with positive light coke.

In the present invention, along the direction of object side to image side, the first lens 1 are male-female lens；Second lens 2 are Concave-convex lens；The third lens 3 are male-female lens；4th lens 4 are biconvex lens；5th lens 5 are concave-convex lens；6th Lens 6 are biconvex lens；7th lens 7 are male-female lens.

Glass modeling mixing tight shot according to the present utility model is made of glass spherical lens and plastic aspheric lens , in the present invention, the first lens 1, the second lens 2, the third lens 3 and the 7th lens 7 are plastic aspheric lens.The Four lens 4, the 5th lens 5 and the 6th lens 6 are glass spherical lens.

According to above-mentioned setting, by using being used cooperatively for glass lens and plastic lens, camera lens is not only effectively reduced Overall length, reduce cost, mitigate weight, and because two class materials have mutual compensating action, efficiently solve camera lens resolving power with , there is good resolving power in the problem of temperature drift in -40 DEG C~80 DEG C of range of temperature, not empty coke.

In addition, the half image height h and its effective focal length f of glass modeling mixing tight shot according to the present utility model meet relationship Formula: h/f > 0.9.

It is arranged such and the glass of the utility model may make to mould mixing tight shot and there is biggish field angle, can reach FOV >=110 ° of big field angle, it is particularly possible to reach 142 ° of big field angle.

In the present invention, the focal length f6 of the focal length f1 of the first lens 1, the focal length f3 of the third lens 3 and the 6th lens 6 The effective focal length f for mixing tight shot with glass modeling meets relational expression: -1.80 < f1/f < -1.35；4.90<f3/f<9.36；2.48< f6/f<2.90。

It is arranged such and the glass of the utility model may make to mould mixing tight shot and may be implemented with large aperture and big visual field When have the lesser curvature of field and lesser CRA angle.

The combined focal length f45 of second lens 2 and the combined focal length f23 of the third lens 3, the 4th lens 4 and the 5th lens 5 with And the 6th the combined focal length f67 of lens 6 and the 7th lens 7 the effective focal length f of tight shot is mixed with the modeling of the glass of the utility model Meet relational expression: 4.0 < f23/f < 6.36；4.71<f45/f<6.16；2.20<f67/f<2.65.

Such setting is conducive on optical axis and the optimization and balance of light off-axis aberration, makes on optical axis and the outer visual field of optical axis Reach higher image quality.

In the present invention, the value range of the refractive index nd4 and Abbe number vd4 of the 4th lens 4 be respectively as follows: 1.40 < Nd4<1.65, vd4>75；The value range of the refractive index nd5 and Abbe number vd5 of 5th lens 5 be respectively as follows: 1.68 < nd5 < 2.10,vd5>22。

The optics correction color difference for being conducive to glass modeling mixing tight shot according to the present utility model is arranged such, realizes High-resolution.

The value range of the refractive index nd6 and Abbe number vd6 of 6th lens 6 are respectively as follows: 1.40<nd6<1.65, vd6>75.

Such setting is conducive to glass modeling mixing tight shot according to the present utility model and realizes in visible light and infrared light work Resolution ratio all with higher under the conditions of work, and realize day and night confocal function.

In the present invention, the combination focal power Ff of front lens group A mixes tight shot with the modeling of the glass of the utility model Effective focal length f meet relational expression: -4.90 < Ff/f < -3.45；

The combination focal power Bf of rear lens group B meets with the effective focal length f that the modeling of the glass of the utility model mixes tight shot Relational expression: 1.62 < Bf/f < 1.94.

It is arranged such and can ensure that the camera lens of the utility model has preferable tolerance while realizing the requirement of large aperture With lesser optics overall length.

In the present invention, the optic back focal BFL of glass modeling mixing tight shot mixes the optics of tight shot with glass modeling Overall length TTL meets relational expression: 3.0 < TTL/BFL < 4.0；

Meanwhile the optics overall length TTL of the glass modeling mixing tight shot of the utility model is mixed with the modeling of the glass of the utility model The effective focal length f of tight shot meets relational expression: 5.40 < TTL/f < 7.0.

Such setting may make the optics overall length of the camera lens of the utility model smaller, and tolerance sensitivities are smaller.

In the present invention, the F number FNO of glass modeling mixing tight shot are as follows: FNO≤2.0.

Glass modeling mixing tight shot according to the present utility model can realize the large aperture of F1.4, guarantee the optical system of camera lens Have enough light passing amounts, even if night image planes still have relatively high brightness, realization is day and night confocal, can be with day and night Function.

From the foregoing, it will be observed that above-mentioned setting according to the present utility model, the velocity of wave mixing tight shot of the utility model uses 3 The optical texture for the 3G4P that glass spheric glass and 4 plastic aspherical element eyeglasses combine, keeps the camera lens of the utility model reachable To the big field angle of FOV >=110 ° and with FNO≤2.0 large apertures to guarantee that system has enough light passing amounts, even if night Image planes still have relatively high brightness.

Above-mentioned setting below according to the utility model provides three groups of specific embodiments and illustrates according to this is practical Novel glass modeling mixing tight shot.Because glass modeling mixing tight shot according to the present utility model shares seven lens, wherein 4th lens 4 and the 5th lens 5 are cemented doublet group, so seven lens share 13 faces, along with diaphragm S, camera lens at Four faces of plate filter IR between image planes IMA and imaging surface IMA and lens, altogether 17 faces.This 17 faces are according to this The structural order of utility model is arranged successively arrangement, and for the ease of narration explanation, 17 faces are numbered as S1 to S17.In addition, In following implementation, non-spherical lens meets following formula:

R is the distance that optical axis is a little arrived on optical surface in formula, and z is rise of this along optical axis direction, and c is the surface Curvature, k are the quadratic surface constant on the surface, and A, B, C, D, E, F, G are respectively quadravalence, six ranks, eight ranks, ten ranks, ten second orders, ten The asphericity coefficient of quadravalence and 16 ranks.

Data in four groups of embodiment data such as the following table 1:

Conditional	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4
					h/f>0.9	0.96	0.96	1.06	1.19
FNO≤2.0	2.0	1.4	1.4	1.4
					-1.80<f1/f<-1.35	-1.40	-1.40	-1.62	-1.77
4.90<f3/f<9.36	9.1	9.26	4.94	6.22
					2.48<f6/f<2.90	2.54	2.58	2.57	2.80
4.0<f23/f<6.36	4.36	4.32	5.74	6.26
					4.71<f45/f<6.16	5.33	5.41	4.77	5.35
2.20<f67/f<2.65	2.26	2.29	2.39	2.55
					-4.90<Ff/f<-3.45	-3.5	-4.79	-3.66	-4.09
1.62<Bf/f<1.94	1.69	1.71	1.68	1.84
					1.40<nd4<1.65	1.50	1.50	1.46	1.44
vd4>75	81.60	81.60	90.20	95.10
					1.68<nd5<2.10	2.00	2.00	1.81	1.73
vd5>22	25.44	25.44	25.48	28.31
					1.40<nd6<1.65	1.50	1.50	1.46	1.44
vd6>75	81.60	81.60	90.20	95.10
					5.40<TTL/f<7.0	5.64	5.62	6.09	6.90
3.0<TTL/BFL<4.0	3.09	3.09	3.44	3.89

Table 1

Embodiment one:

Present embodiment is illustrated based on lens construction shown in FIG. 1.

Such as the data provided in embodiment 1 in table 1, the F number FNO=of the glass modeling mixing tight shot of present embodiment 2.0；Meet TTL/BFL=3.09 between optics overall length TTL and optic back focal BFL；Meet between half image height h and effective focal length f H/f=0.96.

By the parameter setting of embodiment 1 in above-mentioned table 1, the glass modeling mixing tight shot of present embodiment is up to 115 ° Big field angle.

Following table 2 lists the relevant parameter of each lens of present embodiment, including surface type, radius of curvature, thickness, material The refractive index and Abbe number and circular cone coefficient of material:

Table 2

In the present embodiment, aspherical surface data is as shown in table 3 below:

Table 3

Fig. 2-Fig. 6 schematically shows the modeling mixing tight shot of the glass in present embodiment in 20 degree of room temperature, visible light respectively Under MTF figure；The Through Focus MTF figure of 125lp/mm under 20 degree of room temperature, visible light；It is red at 20 degree of room temperature, night The Through Focus MTF of outer smooth 125lp/mm schemes；The Through- of 125lp/mm under the degree of low temperature -40, visible light Focus-MTF figure；The Through-Focus-MTF figure of 125lp/mm under 80 degree of high temperature, visible light.

As shown in Figures 2 to 6, the glass modeling mixing tight shot of first embodiment according to the present utility model is in FNO= Under conditions of 2.0, high-resolution is realized, and has taken into account not empty coke in day and night confocal and -40 DEG C to 80 DEG C temperature ranges Characteristic, while resolving power is improved, expand the use scope of product.

Specifically, as seen from Figure 2, the glass modeling mixing tight shot of first embodiment according to the present utility model exists Under visible light, the corresponding OTF coefficient of central vision 200LP/mm spatial frequency is 0.6 or more, it follows that present embodiment Camera lens realize high-resolution characteristic.

No matter is the glass modeling mixing tight shot of first embodiment according to the present utility model it can be seen from Fig. 3 and Fig. 4 At daytime or night, central vision defocus is no more than 0.01mm, it follows that the camera lens of present embodiment realizes It can day and night confocal and not empty coke characteristic under normal temperature state.

It can be seen from Fig. 5 and Fig. 6 the glass modeling mixing tight shot of first embodiment according to the present utility model- In 40 DEG C to 80 DEG C temperature ranges, central vision defocusing amount is no more than 0.002mm, it follows that the mirror of present embodiment Head realizes the characteristic of not empty coke within the temperature range of -40 DEG C to 80 DEG C.

Embodiment two:

Fig. 7 schematically shows the structure of the glass modeling mixing tight shot of second of embodiment according to the present utility model Figure.Being described as follows according to the present embodiment:

Such as the data provided in embodiment 2 in table 1, the F number FNO=of the glass modeling mixing tight shot of present embodiment 1.4；Meet TTL/BFL=3.09 between optics overall length TTL and optic back focal BFL；Meet between half image height h and effective focal length f H/f=0.96.

By the parameter setting of embodiment 2 in above-mentioned table 1, the glass modeling mixing tight shot of present embodiment is up to 115 ° Big field angle.

Following table 4 lists the relevant parameter of each lens of present embodiment, including surface type, radius of curvature, thickness, material The refractive index and Abbe number and circular cone coefficient of material:

Table 4

In the present embodiment, aspherical surface data is as shown in table 5 below:

Table 5

Fig. 8-Figure 12 schematically shows the modeling mixing tight shot of the glass in present embodiment in 20 degree of room temperature, visible light respectively Under MTF figure；The Through Focus MTF figure of 125lp/mm under 20 degree of room temperature, visible light；It is red at 20 degree of room temperature, night The Through Focus MTF of outer smooth 125lp/mm schemes；The Through- of 125lp/mm under the degree of low temperature -40, visible light Focus-MTF figure；The Through-Focus-MTF figure of 125lp/mm under 80 degree of high temperature, visible light.

As shown in Fig. 8 to Figure 12, the glass modeling mixing tight shot of second embodiment according to the present utility model is in FNO= Under conditions of 1.4, high-resolution is realized, and has taken into account not empty coke in day and night confocal and -40 DEG C to 80 DEG C temperature ranges Characteristic, while resolving power is improved, expand the use scope of product.

Specifically, as seen from Figure 8, the glass modeling mixing tight shot of second embodiment according to the present utility model exists Under visible light, the corresponding OTF coefficient of central vision 200LP/mm spatial frequency is 0.55 or more, it follows that this embodiment party The camera lens of formula realizes high-resolution characteristic.

It can be seen from Fig. 9 and Figure 10 the glass modeling mixing tight shot of second embodiment according to the present utility model without By at daytime or night, central vision defocus is no more than 0.008mm, it follows that the camera lens of present embodiment is realized It can day and night confocal and not empty coke characteristic under normal temperature state.

The glass modeling mixing tight shot of second embodiment according to the present utility model it can be seen from Figure 11 and Figure 12 In -40 DEG C to 80 DEG C temperature ranges, central vision defocusing amount is no more than 0.002mm, it follows that present embodiment Camera lens realizes the characteristic of not empty coke within the temperature range of -40 DEG C to 80 DEG C.

Embodiment three:

Figure 13 schematically shows the structure of the glass modeling mixing tight shot of the third embodiment according to the present utility model Figure.Being described as follows according to the present embodiment:

Such as the data provided in embodiment 3 in table 1, the F number FNO=of the glass modeling mixing tight shot of present embodiment 1.4；Meet TTL/BFL=3.44 between optics overall length TTL and optic back focal BFL；Meet between half image height h and effective focal length f H/f=1.06.

By the parameter setting of embodiment 3 in above-mentioned table 1, the glass modeling mixing tight shot of present embodiment is up to 127 ° Big field angle.

Following table 6 lists the relevant parameter of each lens of present embodiment, including surface type, radius of curvature, thickness, material The refractive index and Abbe number and circular cone coefficient of material:

Table 6

In the present embodiment, aspherical surface data is as shown in table 7 below:

Table 7

Figure 14-Figure 18 schematically shows the modeling mixing tight shot of the glass in present embodiment in 20 degree of room temperature, visible respectively MTF figure under light；The Through Focus MTF figure of 125lp/mm under 20 degree of room temperature, visible light；In 20 degree of room temperature, night The Through Focus MTF of infrared light 125lp/mm schemes；The Through- of 1251p/mm under the degree of low temperature -40, visible light Focus-MTF figure；The Through-Focus-MTF figure of 1251p/mm under 80 degree of high temperature, visible light.

As shown in Figure 14 to Figure 18, the glass modeling mixing tight shot of third embodiment according to the present utility model is in FNO Under conditions of=1.4, high-resolution is realized, and has taken into account not empty coke in day and night confocal and -40 DEG C to 80 DEG C temperature ranges Characteristic, while improving resolving power, expand the use scope of product.

Specifically, as seen from Figure 14, the glass modeling mixing tight shot of third embodiment according to the present utility model Under visible light, the corresponding OTF coefficient of central vision 200LP/mm spatial frequency is 0.55 or more, it follows that this implementation The camera lens of mode realizes high-resolution characteristic.

It can be seen from Figure 15 and Figure 16 the glass modeling mixing tight shot of third embodiment according to the present utility model without By at daytime or night, central vision defocusing amount is no more than 0.008mm, it follows that the camera lens of present embodiment is real Having showed under normal temperature state can day and night confocal and not empty coke characteristic.

The glass modeling mixing tight shot of third embodiment according to the present utility model it can be seen from Figure 17 and Figure 18 In -40 DEG C to 80 DEG C temperature ranges, central vision defocusing amount is no more than 0.002mm, it follows that present embodiment Camera lens realizes the characteristic of not empty coke within the temperature range of -40 DEG C to 80 DEG C.

Embodiment four:

Figure 19 schematically shows the structure of the glass modeling mixing tight shot of the 4th kind of embodiment according to the present utility model Figure.Being described as follows according to the present embodiment:

Such as the data provided in embodiment 4 in table 1, the F number FNO=of the glass modeling mixing tight shot of present embodiment 1.4；

Meet TTL/BFL=3.89 between optics overall length TTL and optic back focal BFL；

Meet h/f=1.19 between half image height h and effective focal length f.

By the parameter setting of embodiment 4 in above-mentioned table 1, the glass modeling mixing tight shot of present embodiment is reachable 141.6 ° big field angle.

Following table 8 lists the relevant parameter of each lens of present embodiment, including surface type, radius of curvature, thickness, material The refractive index and Abbe number and circular cone coefficient of material:

Table 8

In the present embodiment, aspherical surface data is as shown in table 9 below:

Table 9

Figure 20-Figure 24 schematically shows the modeling mixing tight shot of the glass in present embodiment in 20 degree of room temperature, visible respectively MTF figure under light；The Through Focus MTF figure of 125lp/mm under 20 degree of room temperature, visible light；In 20 degree of room temperature, night The Through Focus MTF of infrared light 125lp/mm schemes；The Through- of 1251p/mm under the degree of low temperature -40, visible light Focus-MTF figure；The Through-Focus-MTF figure of 1251p/mm under 80 degree of high temperature, visible light.

As shown in Figure 20 to Figure 24, the glass modeling mixing tight shot of the 4th embodiment according to the present utility model is in FNO Under conditions of=1.4, high-resolution is realized, and has taken into account not empty coke in day and night confocal and -40 DEG C to 80 DEG C temperature ranges Characteristic, while improving resolving power, expand the use scope of product.

Specifically, as seen from Figure 20, the glass modeling mixing tight shot of third embodiment according to the present utility model Under visible light, the corresponding OTF coefficient of central vision 200LP/mm spatial frequency is 0.6 or more, it follows that this embodiment party The camera lens of formula realizes high-resolution characteristic.

It can be seen from Figure 21 and Figure 22 the glass modeling mixing tight shot of the 4th embodiment according to the present utility model without By at daytime or night, central vision defocusing amount is no more than 0.006mm, it follows that the camera lens of present embodiment is real Having showed under normal temperature state can day and night confocal and not empty coke characteristic.

The glass modeling mixing tight shot of the 4th embodiment according to the present utility model it can be seen from Figure 23 and Figure 24 In -40 DEG C to 80 DEG C temperature ranges, central vision defocusing amount is no more than 0.005mm, it follows that present embodiment Camera lens realizes the characteristic of not empty coke within the temperature range of -40 DEG C to 80 DEG C.

The foregoing is merely a schemes of the utility model, are not intended to limit the utility model, for ability For the technical staff in domain, various modifications and changes may be made to the present invention.It is all the spirit and principles of the utility model it Interior, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims

1. a kind of glass modeling mixing tight shot, is made of glass lens and plastic lens, comprising: along optical axis from object side to image side according to Front lens group (A), diaphragm (S) and the rear lens group (B) of secondary arrangement；

The front lens group (A) is by the first lens (1), the second lens (2) and that are arranged successively along optical axis from object side to image side Three lens (3) composition；

The rear lens group (B) is by the 4th lens (4), the 5th lens (5), the 6th that are arranged successively along optical axis from object side to image side Lens (6) and the 7th lens (7) composition；It is characterized in that,

First lens (1), second lens (2) and the 5th lens (5) are negative-power lenses；

The third lens (3), the 4th lens (4), the 6th lens (6) and the 7th lens (7) are positive light focus Spend lens.

2. glass according to claim 1 modeling mixing tight shot, which is characterized in that along the direction of object side to image side,

First lens (1) are male-female lens；

Second lens (2) are concave-convex lens；

4th lens (4) and the 5th lens (5) constitute cemented doublet group.

3. glass modeling mixing tight shot according to claim 1, which is characterized in that first lens (1), described second Lens (2), the third lens (3) and the 7th lens (7) are plastic aspheric lens；

4th lens (4), the 5th lens (5) and the 6th lens (6) are glass spherical lens.

4. moulding mixing tight shot to glass described in one of 3 according to claim 1, which is characterized in that half image height h of the camera lens Meet relational expression with the effective focal length f of the camera lens: h/f > 0.9.

5. moulding mixing tight shot to glass described in one of 3 according to claim 1, which is characterized in that first lens (1) The focal length f6 of focal length f1, the focal length f3 of the third lens (3) and the 6th lens (6) and the effective focal length f of the camera lens meet Relational expression: -1.80 < f1/f < -1.35；4.90<f3/f<9.36；2.48<f6/f<2.90.

6. according to claim 1 to glass described in one of 3 mould mixing tight shot, which is characterized in that second lens (2) and Combined focal length f23, the 4th lens (4) and the combined focal length f45 of the 5th lens (5) of the third lens (3) with And the 6th lens (6) and the combined focal length f67 of the 7th lens (7) and the effective focal length f of the camera lens meet relationship Formula: 4.0 < f23/f < 6.36；4.71<f45/f<6.16；2.20<f67/f<2.65.

7. moulding mixing tight shot to glass described in one of 3 according to claim 1, which is characterized in that the 4th lens (4) The value range of refractive index nd4 and Abbe number vd4 are respectively as follows: 1.40<nd4<1.65, vd4>75；

The value range of the refractive index nd5 and Abbe number vd5 of 5th lens (5) are respectively as follows: 1.68<nd5<2.10, and vd5> 22。

8. moulding mixing tight shot to glass described in one of 3 according to claim 1, which is characterized in that the 6th lens (6) The value range of refractive index nd6 and Abbe number vd6 are respectively as follows: 1.40<nd6<1.65, vd6>75.

9. moulding mixing tight shot to glass described in one of 3 according to claim 1, which is characterized in that the front lens group (A) The effective focal length f of combination focal power Ff and the camera lens meets relational expression: -4.90 < Ff/f < -3.45；

The combination focal power Bf of the rear lens group (B) and the effective focal length f of the camera lens meet relational expression: 1.62 < Bf/f < 1.94。

10. moulding mixing tight shot to glass described in one of 3 according to claim 1, which is characterized in that after the optics of the camera lens The optics overall length TTL of burnt BFL and the camera lens meets relational expression: 3.0 < TTL/BFL < 4.0；

Meanwhile the effective focal length f of the optics overall length TTL of the camera lens and the camera lens meets relational expression: 5.40 < TTL/f < 7.0.

11. moulding mixing tight shot to glass described in one of 3 according to claim 1, which is characterized in that the F number FNO of the camera lens Are as follows: FNO≤2.0.