CN108873270A - Glass modeling mixing tight shot - Google Patents
Glass modeling mixing tight shot Download PDFInfo
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- CN108873270A CN108873270A CN201810768667.4A CN201810768667A CN108873270A CN 108873270 A CN108873270 A CN 108873270A CN 201810768667 A CN201810768667 A CN 201810768667A CN 108873270 A CN108873270 A CN 108873270A
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- glass
- tight shot
- focal length
- mixing tight
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- 239000011521 glass Substances 0.000 title claims abstract description 109
- 230000003287 optical effect Effects 0.000 claims abstract description 25
- 229920003023 plastic Polymers 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims 7
- 239000000571 coke Substances 0.000 abstract description 18
- 239000000463 material Substances 0.000 description 13
- 230000004438 eyesight Effects 0.000 description 12
- 238000003384 imaging method Methods 0.000 description 9
- 230000004304 visual acuity Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The present invention relates to a kind of glass to mould mixing tight shot, is made of glass lens and plastic lens, including：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.Glass modeling mixing tight shot of the invention 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
Technical field
The present invention 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 only reaches 2.0, and the cost is relatively high.Theoretically FNO is smaller, aperture
Numerical value is bigger, and the luminous flux into optical system is also bigger, and the brightness of image planes is higher, therefore day and night lens are used
The luminous flux for entering system compared with large aperture raising night is necessary.
Summary of the invention
It is an object of the present invention to solve the above problems, provide it is a kind of can day and night glass modeling mixing fixed-focus mirror
Head.
For achieving the above object, the present invention provides a kind of glass modeling mixing tight shot, saturating by glass lens and plastics
Microscope group at, including：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.
According to an aspect of the present invention, 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.
According to an aspect of the present invention, first lens, second lens, the third lens and the described 7th
Lens are plastic aspheric lens；
4th lens, the 5th lens and the 6th lens are glass spherical lens.
According to an aspect of the present invention, half image height h of the camera lens and the effective focal length f of the camera lens meet relationship
Formula：H/f > 0.9.
According to an aspect of the present invention, the focal length f1 of first lens, the focal length f3 of the third lens and the described 6th
The focal length f6 of 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。
According to an aspect of the present invention, second lens and the combined focal length f23 of the third lens, the described 4th
The combined focal length f67 of the combined focal length f45 and the 6th lens of lens and the 5th lens and the 7th lens with
The effective focal length f of the camera lens meets relational expression：4.0<f23/f<6.36；4.71<f45/f<6.16；2.20<f67/f<2.65.
According to an aspect of the present invention, the value range difference of the refractive index nd4 and Abbe number vd4 of the 4th lens
For：1.40<nd4<1.65 vd4>75；
The value range of the refractive index nd5 and Abbe number vd5 of 5th lens is respectively：1.68<nd5<2.10,vd5>
22。
According to an aspect of the present invention, the value range difference of the refractive index nd6 and Abbe number vd6 of the 6th lens
For：1.40<nd6<1.65 vd6>75.
According to an aspect of the present invention, the effective focal length f of the combination focal power Ff of the front lens group and the camera lens
Meet relational expression：-4.90<Ff/f<-3.45；
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。
According to an aspect of the present invention, the optics overall length TTL of the optic back focal BFL of the camera lens 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。
According to an aspect of the present invention, the F number FNO of the camera lens is：FNO≤2.0.
A scheme according to the present invention, glass modeling mixing tight shot of the invention can realize the large aperture of F1.4, guarantee
The optical system of camera lens has enough light passing amounts, even if night image planes still have relatively high brightness, realization is day and night confocal,
It can be with the function of day and night.
A scheme according to the present invention, velocity of wave mixing tight shot of the invention use 3 glass spheric glasses and 4
The optical texture for the 3G4P that plastic aspherical element eyeglass combines makes camera lens of the invention can reach the big field angle of FOV >=110 °
With with FNO≤2.0 large apertures to guarantee that system has enough light passing amounts, even if night image planes still have it is relatively high bright
Degree.
The present invention is good by glass and the combination of plastic lens and the matching system image quality of each lens material,
While there is preferable imaging effect under visible light, and infrared also to have and visible light under the premise of not focusing again
Identical imaging effect, while night realizes clearly bright imaging picture, i.e., in the case that visual light imaging clearly be not necessarily to
Again focusing can be realized day and night confocal to infrared light also at sharply defined image.
The present invention efficiently solves camera lens solution picture by the combination of glass and plastic lens and the matching of each lens material
The problem of 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 present invention is by the optical texture of 3G4P, so that the present invention has lower cost while guaranteeing performance；Together
When plastic aspherical element eyeglass use also effectively reduce the length of system 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 invention；
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 chart of the glass modeling mixing tight shot of second of embodiment according to the present invention；
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 chart of the glass modeling mixing tight shot of the third embodiment according to the present invention；
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 chart of the glass modeling mixing tight shot of the 4th kind of embodiment according to the present invention；
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 125lp/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 125lp/mm
Through-Focus-MTF figure；
Figure 23 is the modeling of glass described in specific embodiment four mixing tight shot 125lp/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 125lp/mm under 80 degree of high temperature, visible light
Through-Focus-MTF figure.
Specific embodiment
It, below will be to embodiment in order to illustrate more clearly of embodiment of the present invention or technical solution in the prior art
Needed in attached drawing be briefly described.It should be evident that the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skills without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
When being described for embodiments of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", " preceding ",
" rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", orientation or positional relationship expressed by "outside" are based on phase
Orientation or positional relationship shown in the drawings is closed, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore above-mentioned term cannot
It is interpreted as limitation of the present invention.
The present invention is described in detail with reference to the accompanying drawings and detailed description, embodiment cannot go to live in the household of one's in-laws on getting married one by one herein
It states, but therefore embodiments of the present invention are 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 invention.Such as Fig. 1
Shown, glass modeling mixing tight shot according to the present invention includes front lens group A, the light being arranged successively along optical axis from object side to image side
Late 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 to image side successively
What the first lens 1, the second lens 2 and the third lens 3 of arrangement formed.Rear lens group B be then by along optical axis from object side to image side
The 4th lens 4, the 5th lens 5, the 6th lens 6 and the 7th lens 7 composition being arranged successively.Diaphragm S is arranged in front lens
Between 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；The third lens 3,
4th lens 4, the 6th lens 6 and the 7th lens 7 are positive power lens.Wherein, the 4th lens 4 and the 5th lens 5 constitute
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
For biconvex lens；7th lens 7 are male-female lens.
What glass modeling mixing tight shot according to the present invention was 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.4th lens 4,
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 invention meet relational expression：h/f
> 0.9.
Be arranged such and glass of the invention 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 and glass 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 of modeling mixing tight shot 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 glass of the invention may make to mould mixing tight shot and may be implemented with large aperture and tool when big visual field
There are 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 mix the effective focal length f satisfaction of tight shot with glass modeling of the invention
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 are respectively：1.40<nd4<
1.65 vd4>75；The value range of the refractive index nd5 and Abbe number vd5 of 5th lens 5 is respectively：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 invention is arranged such, realizes high score
Resolution.
The value range of the refractive index nd6 and Abbe number vd6 of 6th lens 6 is respectively：1.40<nd6<1.65 vd6>75.
Such setting is conducive to glass modeling mixing tight shot according to the present invention and realizes in visible light and infrared light work item
Resolution ratio all with higher under part, and realize day and night confocal function.
In the present invention, the combination focal power Ff of front lens group A mixes effective coke of tight shot with glass modeling of the invention
Meet relational expression away from f：-4.90<Ff/f<-3.45；
The combination focal power Bf of rear lens group B meets relationship with the effective focal length f that glass modeling of the invention mixes tight shot
Formula：1.62<Bf/f<1.94.
Be arranged such can ensure that camera lens of the invention realize large aperture requirement while have preferable tolerance and compared with
Small optics overall length.
In the present invention, the optic back focal BFL of glass modeling mixing tight shot mixes the optics overall length of tight shot with glass modeling
TTL meets relational expression：3.0<TTL/BFL<4.0；
Meanwhile the optics overall length TTL of glass modeling mixing tight shot of the invention mixes tight shot with glass modeling of the invention
Effective focal length f meet relational expression：5.40<TTL/f<7.0.
Such setting may make the optics overall length of camera lens of the invention smaller, and tolerance sensitivities are smaller.
In the present invention, the F number FNO of glass modeling mixing tight shot is：FNO≤2.0.
Glass modeling mixing tight shot according to the present invention can realize the large aperture of F1.4, guarantee that the optical system of camera lens has
Enough light passing amounts, even if night image planes still have relatively high brightness, realization is day and night confocal, can be with the function of day and night
Energy.
From the foregoing, it will be observed that above-mentioned setting according to the present invention, velocity of wave mixing tight shot of the invention uses 3 glass spherical surfaces
The optical texture for the 3G4P that eyeglass and 4 plastic aspherical element eyeglasses combine, makes camera lens of the invention can reach FOV >=110 °
Big field angle and with FNO≤2.0 large apertures are to guarantee system with enough light passing amounts, even if night image planes still have relatively
Higher brightness.
The present invention is good by glass and the combination of plastic lens and the matching system image quality of each lens material,
While there is preferable imaging effect under visible light, and infrared also to have and visible light under the premise of not focusing again
Identical imaging effect, while night realizes clearly bright imaging picture, i.e., in the case that visual light imaging clearly be not necessarily to
Again focusing can be realized day and night confocal to infrared light also at sharply defined image.
The present invention efficiently solves camera lens solution picture by the combination of glass and plastic lens and the matching of each lens material
The problem of 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 present invention is by the optical texture of 3G4P, so that the present invention has lower cost while guaranteeing performance；Together
When plastic aspherical element eyeglass use also effectively reduce the length of system so that system bulk is small light-weight.
Three groups of specific embodiments are provided below according to above-mentioned setting of the invention to illustrate glass according to the present invention
Modeling mixing tight shot.Because glass according to the present invention modeling mixing tight shot shares seven lens, wherein the 4th lens 4 and the
Five lens 5 are cemented doublet group, so seven lens share 13 faces, along with diaphragm S, camera lens imaging surface IMA and at
Four faces of plate filter IR between image planes IMA and lens, altogether 17 faces.This 17 face structural orders according to the invention
It is arranged successively arrangement, for the ease of narration explanation, 17 faces are numbered as S1 to S17.In addition, in the following embodiments, it is 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, glass modeling mixing tight shot according to the first embodiment of the present invention is FNO=2.0's
Under the conditions of, high-resolution is realized, and taken into account the characteristic of not empty coke in day and night confocal and -40 DEG C to 80 DEG C temperature ranges,
Resolving power is improved simultaneously, expands the use scope of product.
Specifically, as seen from Figure 2, glass modeling mixing tight shot according to the first embodiment of the present invention is visible
Under light, the corresponding OTF coefficient of central vision 200LP/mm spatial frequency is 0.6 or more, it follows that the mirror of present embodiment
Head realizes high-resolution characteristic.
No matter glass according to the first embodiment of the present invention modeling mixing tight shot is white it can be seen from Fig. 3 and Fig. 4
It or night, central vision defocus are no more than 0.01mm, it follows that the camera lens of present embodiment is realized in room temperature
It can day and night confocal and not empty coke characteristic under state.
Glass according to the first embodiment of the present invention modeling mixing tight shot is at -40 DEG C it can be seen from Fig. 5 and Fig. 6
Into 80 DEG C of temperature ranges, central vision defocusing amount is no more than 0.002mm, it follows that the camera lens of present embodiment is real
The characteristic of not empty coke within the temperature range of -40 DEG C to 80 DEG C is showed.
Embodiment two：
Fig. 7 schematically shows the structure chart of the glass modeling mixing tight shot of second of embodiment according to the present invention.Root
It is as follows according to description of 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, glass modeling mixing tight shot according to the second embodiment of the present invention is in FNO=1.4
Under conditions of, high-resolution is realized, and taken into account the spy of not empty coke in day and night confocal and -40 DEG C to 80 DEG C temperature ranges
Property, while resolving power is improved, expand the use scope of product.
Specifically, as seen from Figure 8, glass modeling mixing tight shot according to the second embodiment of the present invention is visible
Under light, the corresponding OTF coefficient of central vision 200LP/mm spatial frequency is 0.55 or more, it follows that present embodiment
Camera lens realizes high-resolution characteristic.
It can be seen from Fig. 9 and Figure 10 glass according to the second embodiment of the present invention modeling mixing tight shot no matter
Daytime or night, central vision defocus are no more than 0.008mm, 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.
Glass according to the second embodiment of the present invention modeling mixing tight shot is -40 it can be seen from Figure 11 and Figure 12
DEG C in 80 DEG C of temperature ranges, central vision defocusing amount is no more than 0.002mm, it follows that the camera lens of present embodiment
Realize 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 chart of the glass modeling mixing tight shot of the third embodiment according to the present invention.Root
It is as follows according to description of 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 ThroughFocus 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 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, glass modeling mixing tight shot according to the third embodiment of the present invention is in FNO=1.4
Under conditions of, high-resolution is realized, and taken into account the spy of not empty coke in day and night confocal and -40 DEG C to 80 DEG C temperature ranges
Property, while resolving power is improved, expand the use scope of product.
Specifically, as seen from Figure 14, glass according to the third embodiment of the present invention modeling mixing tight shot is can
Under light-exposed, the corresponding OTF coefficient of central vision 200LP/mm spatial frequency is 0.55 or more, it follows that present embodiment
Camera lens realize high-resolution characteristic.
It can be seen from Figure 15 and Figure 16 glass according to the third embodiment of the present invention modeling mixing tight shot no matter
Daytime or night, central vision defocusing amount are no more than 0.008mm, 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.
Glass according to the third embodiment of the present invention modeling mixing tight shot is -40 it can be seen from Figure 17 and Figure 18
DEG C in 80 DEG C of temperature ranges, central vision defocusing amount is no more than 0.002mm, it follows that the camera lens of present embodiment
Realize 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 chart of the glass modeling mixing tight shot of the 4th kind of embodiment according to the present invention.Root
It is as follows according to description of 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, glass modeling mixing tight shot according to the fourth embodiment of the present invention is in FNO=1.4
Under conditions of, high-resolution is realized, and taken into account the spy of not empty coke in day and night confocal and -40 DEG C to 80 DEG C temperature ranges
Property, while resolving power is improved, expand the use scope of product.
Specifically, as seen from Figure 20, glass according to the third embodiment of the present invention modeling mixing tight shot is can
Under light-exposed, the corresponding OTF coefficient of central vision 200LP/mm spatial frequency is 0.6 or more, it follows that present embodiment
Camera lens realizes high-resolution characteristic.
It can be seen from Figure 21 and Figure 22 glass according to the fourth embodiment of the present invention modeling mixing tight shot no matter
Daytime or night, central vision defocusing amount are no more than 0.006mm, 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.
Glass according to the fourth embodiment of the present invention modeling mixing tight shot is -40 it can be seen from Figure 23 and Figure 24
DEG C in 80 DEG C of temperature ranges, central vision defocusing amount is no more than 0.005mm, it follows that the camera lens of present embodiment
Realize 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 invention, are not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of glass modeling mixing tight shot, is made of glass lens and plastic lens, including：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 is respectively：1.40<nd4<1.65 vd4>75；
The value range of the refractive index nd5 and Abbe number vd5 of 5th lens (5) is respectively：1.68<nd5<2.10,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 is respectively：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
For：FNO≤2.0.
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| CN201810768667.4A CN108873270B (en) | 2018-07-13 | 2018-07-13 | Glass-plastic mixed prime lens |
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| CN201810768667.4A CN108873270B (en) | 2018-07-13 | 2018-07-13 | Glass-plastic mixed prime lens |
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