CN107957623B - Zoom lens - Google Patents
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- CN107957623B CN107957623B CN201810034927.5A CN201810034927A CN107957623B CN 107957623 B CN107957623 B CN 107957623B CN 201810034927 A CN201810034927 A CN 201810034927A CN 107957623 B CN107957623 B CN 107957623B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
Abstract
A kind of zoom lens, it from the object side to image side successively include: condenser lens group, aperture diaphragm, the zoom lens group with positive light coke, optical filter and the imaging surface with image-forming component with positive light coke, the present apparatus can satisfy 4K ultra high-definition resolution ratio, in wide-angle side to telescope end zoom each multiplying power guarantee it is infrared confocal, can blur-free imaging at 80 DEG C and -40 DEG C of low temperature of high temperature while temperature drift compensation.So that camera lens can work normally under all temperature environments substantially.
Description
Technical field
The present invention relates to a kind of technology in optical device field, specifically a kind of zoom lens.
Background technique
In order to meet monitoring camera function in short distance and remote monitor Shi Junneng blur-free imaging, the mirror of monitor camera
Head needs to have the zoom of appropriate multiplying power, and under normal circumstances, multiplying power is bigger, and design difficulty is higher, the image quality under high power
It will be poorer.While camera pixel is promoted, bring is the increase of lens numbers and the increase of complicated integral structure,
The high pixel of high-resolution often corresponds to large scale and Gao Chengben.And in order to meet the needs of night monitoring, monitor camera
It is also required to have infrared confocal ability and certain temperature drift compensation ability.
Summary of the invention
The present invention is directed to the zoom lens of current monitor camera, in outer dimension, cost, image quality, infrared total
The defect for accomplishing to take into account is tended not in terms of many restraining factors for influencing lens quality such as coke, temperature drift compensation, burnt section, proposes one
Kind of zoom lens is optimized by special optical lens collocation and face type, can satisfy 4K ultra high-definition resolution ratio, wide-angle side extremely
Each multiplying power guarantees infrared confocal when telescope end zoom, while temperature drift compensation at 80 DEG C and -40 DEG C of low temperature of high temperature equal energy
Blur-free imaging.So that camera lens can work normally under all temperature environments substantially.
The present invention is achieved by the following technical solutions:
The present invention successively includes: condenser lens group with positive light coke, aperture diaphragm, has positive light from the object side to image side
Zoom lens group, optical filter and the imaging surface with image-forming component of focal power, it is poly- along optical axis direction adjustment when object distance changes
When the position of focus lens group, camera lens realizes the focusing zoomed in or out under multiplying power in difference；When zoom lens group along optical axis from
When the lateral image side of object is mobile, camera lens realizes the zoom process from telescope end to wide-angle side.
The whole focal length of the condenser lens group is (- 15, -5).
The whole focal length of the zoom lens group is (5,15).
The ratio of whole focal length and back focal length of the camera lens in wide-angle side is (0.3,0.7), the wide-angle side
The relative status of lens when referring to lens focus minimum.
The ratio of whole focal length and back focal length of the camera lens in telescope end is (0.6,1.0), the telescope end
The relative status of lens when referring to lens focus maximum.
Including at least piece of plastic is made, focal power is positive in lens in the condenser lens group and zoom lens group
Non-spherical lens, preferably the refractive index of the non-spherical lens be (1.52,1.56), Abbe number be (53,56).
Technical effect
Compared with prior art, the technology of the present invention effect includes:
1) 4K ultra high-definition resolution ratio
The video camera of safety monitoring requires that human eye can be replaced, in real time, the vivid, form that is truly reflected monitored object,
The features such as appearance.Therefore the requirement to camera lens is resolving power height, and clarity is good.Security monitoring camera on the market is mostly at present
2000000~3,000,000 pixels are increasingly unable to satisfy the fine definition requirement of safety monitoring.Camera lens of the invention, realizes
The resolution ratio of 4K ultra high-definition, the imaging sensor that can allow 12,000,000 or more pixels use, and keep monitored object true, clear
Ground is taken, and greatly improves the safety and authenticity of safety monitoring.In addition, higher resolution ratio makes the present invention
Camera lens can shoot the picture of more large scene, can be it is clear that therefore the present invention also can be answered preferably after by picture amplification
Monitoring under large scene.
2) whole infrared confocal
The present invention is designed by special lens material combination collocation and face type, has been accomplished whole from wide-angle side to telescope end
It is infrared confocal.Therefore under each burnt section and multiplying power, it can guarantee daytime and 24 hours nights blur-free imaging, so that each period
It can monitor in real time, allow security protection without dead angle, improve the safety of monitoring.Even if passing through under the mal-conditions such as haze, dust
Its outstanding infrared confocal performance can also take clear, high contrast image.
3) temperature drift compensation
Because safety monitoring requires camera lens to can be used normally in various extreme environments, camera lens needs guarantee in height
There can be no empty burnt situations under mild low temperature.But because the relationship of the physical characteristic of lens, the refractive index and face type of lens
It can change with the variation of temperature.So if camera lens does not have considering for this respect when optics and mechanism design, that
It can not just be used in security monitoring camera.Current camera lens almost all of on the market can not all be accomplished under high temperature and low temperature
Do not occur the situation of empty coke.
Detailed description of the invention
Fig. 1 is the optical texture schematic diagram of the embodiment of the present invention 1；
Fig. 2 is each aberration diagram relative to d line of the wide-angle side of the embodiment of the present invention 1；
Fig. 3 is each aberration diagram relative to d line of the telescope end of the embodiment of the present invention 1；
Fig. 4 is the optical texture schematic diagram of the embodiment of the present invention 2；
Fig. 5 is each aberration diagram of the wide-angle side of the embodiment of the present invention 2 relative to d line；
Fig. 6 is each aberration diagram of the telescope end of the embodiment of the present invention 2 relative to d line；
Fig. 7 is that the wide-angle side MTF of the embodiment of the present invention 1 schemes；
Fig. 8 is that the wide-angle side MTF of the embodiment of the present invention 2 schemes；
In figure: G1 condenser lens group, G2 zoom lens group, STP aperture diaphragm, IMG imaging surface, ICF optical filter, L1~L8
First to the 8th lens.
Specific embodiment
Embodiment 1
As shown in Figure 1, the zoom lens that the present embodiment is related to, successively includes having gathering for positive light coke from the object side to image side
Focus lens group G1, aperture diaphragm STP, the zoom lens group G2 with positive light coke, the optical filter ICF for filtering out stray light and
The light receiving surface of solid-state imager configured with CCD and CMOS etc. and the imaging surface IMG of protection face.
When object distance changes, along the position of optical axis direction adjustment condenser lens group G1, camera lens may be implemented in different amplifications
Or the focusing under reduction magnification.The effect of zoom lens group G2 is to zoom in or out multiplying power: when zoom lens group G2 is along optical axis
When mobile to image side from object side, camera lens realizes the zoom process from telescope end to wide-angle side；Conversely, zoom lens group G2 along
When optical axis is mobile to object side from image side, camera lens realizes the zoom process from wide-angle side to telescope end.
The condenser lens group G1 successively includes the first lens L1, the second lens L2, the from object space along optical axis direction
Three lens L3, in which: the first lens are the glass spherical lens that focal power is negative；Second lens are that the plastics that focal power is negative are non-
Spherical lens；The third lens are the glass spherical lens that focal power is positive；
The zoom lens group G2 successively includes the 4th lens L4, the 5th lens L5, the from object space along optical axis direction
Six lens L6, in which: the 4th lens are the plastic aspheric lens that focal power is positive；5th lens are the glass that focal power is negative
Spherical lens；6th lens are the glass spherical lens that focal power is positive, and the 5th lens and the 6th lens are formed by glued
The balsaming lens that one light combination focal power is positive, cemented surface concave surface is towards image space.
Hereinafter, showing the various numeric datas of the zoom lens about embodiment 1.
Effective focal length EFL=2.7 (wide-angle side)~7.5 (intermediate ends)~13 (telescope end)
Numerical aperture FNO=1.4 (wide-angle side)~2.6 (intermediate ends~3.0 (telescope end)
1 embodiment of table, 1 lens construction parameter
The wherein image side surface of the 5th lens i.e. object side of the 6th lens.
2 embodiment of table, 1 lens zoom parameter
| Surface serial number | W | M | T |
| A | 10.6 | 3.6 | 2.2 |
| B | 9.8 | 7.1 | 1.0 |
| C | 10.6 | 12.5 | 19.1 |
3 embodiment of table, 1 camera lens asphericity coefficient
| Surface serial number | K | A4 | A6 | A8 | A10 |
| 3 | 0 | -4.62E-05 | -2.82E-06 | -1.92E-08 | 5.67E-12 |
| 4 | 0.009 | 9.03E-04 | -2.03E-07 | 6.48E-11 | -6.57E-13 |
| 8 | 0 | -4.11E-07 | -1.41E-07 | -6.48E-10 | 9.11E-10 |
| 9 | 0.003 | 6.51E-06 | 9.87E-08 | -6.48E-10 | 4.92E-11 |
As shown in Fig. 2, being each aberration diagram of the zoom lens wide-angle side of embodiment 1 relative to d line (λ=587.56nm)；
As shown in figure 3, being each aberration diagram of the zoom lens telescope end of embodiment 1 relative to d line (λ=587.56nm).In astigmatism figure
S, M, respectively indicate aberration corresponding to sagittal image surface, meridianal image surface.As shown in fig. 7, for the MTF figure of embodiment 1 and real scene shooting
Figure, in MTF figure from central vision, 0.5 visual field, 1.0 visual field three parts integrated survey camera lenses modulation transfer function.
Embodiment 2
As shown in figure 4, the zoom lens that the present embodiment is related to, successively includes having gathering for positive light coke from the object side to image side
Focus lens group G1, aperture diaphragm STP, the zoom lens group G2 with positive light coke, the optical filter ICF for filtering out stray light and
The light receiving surface of solid-state imager configured with CCD and CMOS etc. and the imaging surface IMG of protection face.
When object distance changes, along the position of optical axis direction adjustment condenser lens group G1, camera lens may be implemented in different amplifications
Or the focusing under reduction magnification.The effect of zoom lens group G2 is to zoom in or out multiplying power: when zoom lens group G2 is along optical axis
When mobile to image side from object side, camera lens realizes the zoom process from telescope end to wide-angle side；Conversely, zoom lens group G2 along
When optical axis is mobile to object side from image side, camera lens realizes the zoom process from wide-angle side to telescope end.
The condenser lens group G1 successively includes the first lens L1, the second lens L2, the from object space along optical axis direction
Three lens L3, in which: the first lens are the glass spherical lens that focal power is negative；Second lens are the glass marble that focal power is negative
Face lens；The third lens are the plastic aspheric lens that focal power is positive；
The zoom lens group G2 successively includes the 4th lens L4, the 5th lens L5, the from object space along optical axis direction
Six lens L6, the 7th lens L7 and the 8th lens L8, in which: the 4th lens are the plastic aspheric lens that focal power is positive；The
Five lens are the glass spherical lens that focal power is negative；6th lens are the glass spherical lens that focal power is positive, and the 5th is saturating
Mirror and the 6th lens are by the glued balsaming lens for forming a light combination focal power and being positive, and cemented surface concave surface is towards image space；7th thoroughly
Mirror is the plastic aspheric lens that focal power is negative；8th lens are the glass spherical lens that focal power is positive.
Compared with Example 1, the main distinction of the present embodiment is: the aspherical quantity of zoom lens group G2 is increased,
Preferably at the rear of glyglass lens, it joined a new plastic aspheric lens.Compared to embodiment 1, this implementation
Example from wide-angle side to telescope end, do more excellent by performance, and temperature drift control is more preferable.
Hereinafter, showing the various numeric datas of the zoom lens about embodiment 2.
Effective focal length EFL=2.6 (wide-angle side)~7.5 (intermediate ends)~13.5 (telescope end)
Numerical aperture FNO=1.5 (wide-angle side)~2.7 (intermediate ends)~3.1 (telescope end)
4 embodiment of table, 2 lens construction parameter
| Surface serial number | Surface type | Radius of curvature | Thickness | Refractive index | Abbe number |
| 1 | Spherical surface | 65.40 | 1.22 | 1.88 | 42.5 |
| 2 | Spherical surface | 6.85 | 3.77 | ||
| 3 | Spherical surface | -20.89 | 1.35 | 1.56 | 53.5 |
| 4 | Spherical surface | 17.66 | 1.58 | ||
| 5 | It is aspherical | 14.05 | 2.55 | 1.83 | 40.2 |
| 6 | It is aspherical | -301.30 | A | ||
| Diaphragm | Plane | INF | B | ||
| 8 | It is aspherical | 8.13 | 5.58 | 1.53 | 56.2 |
| 9 | It is aspherical | -16.19 | 0.50 | ||
| 10 | Spherical surface | -141.26 | 1.72 | 1.67 | 43.5 |
| 11 | Spherical surface | 5.81 | 5.86 | 1.50 | 70.8 |
| 12 | Spherical surface | -13.21 | 0.2 | ||
| 13 | It is aspherical | 133.22 | 3.21 | 1.54 | 55.1 |
| 14 | It is aspherical | 6.95 | 1.00 | ||
| 15 | Spherical surface | 12.10 | 2.41 | 1.78 | 34.1 |
| 16 | Spherical surface | 75.38 | C | ||
| Image planes |
5 embodiment of table, 2 lens zoom parameter
6 embodiment of table, 2 camera lens asphericity coefficient
| Surface serial number | K | A4 | A6 | A8 | A10 |
| 5 | 0 | -3.70E-05 | -2.26E-06 | -1.54E-08 | 4.54E-12 |
| 6 | 0 | 7.22E-04 | -1.62E-07 | -5.18E-11 | 5.26E-10 |
| 8 | 0 | -3.29E-06 | -1.13E-07 | 6.17E-10 | 7.28E-12 |
| 9 | 0 | 5.21E-05 | 7.90E-12 | -4.79E-10 | 3.94E-05 |
| 13 | 0 | 4.18E-05 | 3.77E-07 | 4.47E-11 | -3.09E-10 |
| 14 | 0 | 5.62E-04 | -6.92E-08 | 2.43E-08 | --8.37E-13 |
As shown in figure 5, being each aberration diagram of the zoom lens wide-angle side of embodiment 2 relative to d line (λ=587.56nm)；
As shown in fig. 6, being each aberration diagram of the zoom lens telescope end of embodiment 2 relative to d line (λ=587.56nm).In astigmatism figure
S, M, respectively indicate aberration corresponding to sagittal image surface, meridianal image surface.As shown in figure 8, for the MTF figure of embodiment 2 and real scene shooting
Figure, in MTF figure from central vision, 0.5 visual field, 1.0 visual field three parts integrated survey camera lenses modulation transfer function.From Fig. 5,6
In as can be seen that embodiment 2 compared to embodiment 1, have promotion in spherical aberration, curvature of the image and the curvature of field, it is increased non-
Spherical lens can improve camera lens image quality with high degree, can match the even more high performance sensor of 4K.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (8)
1. a kind of zoom lens, which is characterized in that successively include: from the object side to image side condenser lens group with positive light coke,
Aperture diaphragm, the zoom lens group with positive light coke, optical filter and the imaging surface with image-forming component, in which: focus saturating
The non-spherical lens that piece of plastic is made, focal power is positive is included at least in lens in lens group and zoom lens group, works as object distance
When change, when along the position of optical axis direction adjustment condenser lens group, camera lens realizes the focusing zoomed in or out under multiplying power in difference；
When zoom lens group moves along optical axis from object side to image side, camera lens realizes the zoom process from telescope end to wide-angle side；
The condenser lens group, successively includes: the glass spherical lens that focal power is negative from object space along optical axis direction, i.e., and
The glass spherical lens that the plastic aspheric lens that one lens, focal power are negative, i.e. the second lens and focal power are positive, i.e.,
Three lens；
The zoom lens group successively includes: the plastic aspheric lens that focal power is positive from object space, i.e., along optical axis direction
4th lens and the 5th lens and the 6th lens, the 5th lens and the 6th lens gluing form the balsaming lens of positive light coke,
Its cemented surface is concave surface and towards image side；
The first lens object side is convex surface, and image side surface is concave surface；Second lens are biconcave lens；The third lens object side
For convex surface；4th lens are biconvex lens；5th lens image side surface is concave surface；6th lens are biconvex lens.
2. zoom lens according to claim 1, characterized in that the whole focal length of the condenser lens group be (- 15 ,-
5)；The whole focal length of the zoom lens group is (5,15).
3. zoom lens according to claim 1, characterized in that the camera lens is minimum in wide-angle side, i.e. lens focus
When whole focal length and back focal length ratio be (0.3,0.7)；The camera lens is whole in telescope end, i.e. lens focus maximum
Body focal length and the ratio of back focal length are (0.6,1.0).
4. zoom lens according to claim 1, characterized in that the refractive index of the non-spherical lens be (1.52,
1.56), Abbe number is (53,56).
5. zoom lens according to claim 1, characterized in that the balsaming lens includes the glass that focal power is negative
The glass spherical lens that spherical lens and focal power are positive.
6. any zoom lens according to claim 1~5, characterized in that have just in the zoom lens group
The plastic aspheric lens that focal power is negative and the glass that focal power is positive are further provided with after the balsaming lens of light combination focal power
Spherical lens.
7. any zoom lens according to claim 1~5, characterized in that specific structure are as follows:
The object side of first lens is spherical surface, radius of curvature 141.44, the first lens with a thickness of 0.94, roll over
Penetrating rate is 1.81, Abbe number 40.2, and the image side surfaces of the first lens is spherical surface, radius of curvature 7.19, the first lens
The distance of image side surface to the object side of the second lens is 3.75；
The object side of second lens be it is aspherical, radius of curvature is -27.55, the second lens with a thickness of 1.75,
Refractive index is 1.53, Abbe number 56, and the image side surface of the second lens is aspherical, radius of curvature 17.55, the second lens
Image side surface to the object side of the third lens distance be 1.29；
The object side of the third lens is spherical surface, radius of curvature 13.38, the third lens with a thickness of 1.92, roll over
Penetrating rate is 1.88, Abbe number 42.5, and the image side surfaces of the third lens is spherical surface, radius of curvature 33.46, the third lens
The distance of image side surface to diaphragm is A；
The diaphragm is plane, radius of curvature INF, with a thickness of B；
The object side of 4th lens is aspherical, radius of curvature 8.09, the 4th lens with a thickness of 6.05, roll over
Penetrating rate is 1.56, Abbe number 53.5, the image side surfaces of the 4th lens be it is aspherical, radius of curvature is -15.99, and the 4th is saturating
The distance of the image side surface of mirror to the object side of the 5th lens is 0.13；
The object side of 5th lens is spherical surface, and radius of curvature is -141.21, the 5th lens with a thickness of 2.08,
Refractive index is 1.77, Abbe number 49.5, and the object side of the 6th lens is spherical surface, radius of curvature 5.72, the 6th lens
With a thickness of 6, refractive index 1.5, Abbe number 70.8；The image side surface of 6th lens be spherical surface, radius of curvature be-
11.75, the distance of image side surface to the imaging surface of the 6th lens is C；
The circular cone coefficient of the object side of second lens is 0, and quadravalence asphericity coefficient is -4.62E-05, and six ranks are non-
Asphere coefficient is -2.82E-06, and eight rank asphericity coefficients are -1.92E-08, and ten rank asphericity coefficients are 5.67E-12, the
The circular cone coefficient of the image side surface of two lens is 0.009, and quadravalence asphericity coefficient is 9.03E-04, six rank asphericity coefficients
For -2.03E-07, eight rank asphericity coefficients are 6.48E-11, and ten rank asphericity coefficients are -6.57E-13；
The circular cone coefficient of the object side of 4th lens is 0, and quadravalence asphericity coefficient is -4.11E-07, and six ranks are non-
Asphere coefficient is -1.41E-07, and eight rank asphericity coefficients are -6.48E-10, and ten rank asphericity coefficients are 9.11E-10, the
The circular cone coefficient of the image side surface of four lens is 0.003, and quadravalence asphericity coefficient is 6.51E-06, and six rank asphericity coefficients are
9.87E-08, eight rank asphericity coefficients are -6.48E-10, and ten rank asphericity coefficients are 4.92E-11.
8. zoom lens according to claim 6, characterized in that specific structure are as follows:
The object side of first lens is spherical surface, radius of curvature 65.4, the first lens with a thickness of 1.22, reflect
Rate is 1.88, Abbe number 42.5, and the image side surface of the first lens is spherical surface, radius of curvature 6.85, the picture of the first lens
The distance of side to the object side of the second lens is 3.77；
The object side of second lens is spherical surface, and radius of curvature is -20.89, the second lens with a thickness of 1.35, folding
Penetrating rate is 1.56, Abbe number 53.5, and the image side surfaces of the second lens is spherical surface, radius of curvature 17.66, the second lens
The distance of image side surface to the object side of the third lens is 1.58；
The object side of the third lens is aspherical, radius of curvature 14.05, the third lens with a thickness of 2.55,
Refractive index is 1.83, Abbe number 40.2, the image side surfaces of the third lens be it is aspherical, radius of curvature is -301.3, third
The image side surface of lens to diaphragm distance with a thickness of A；
The diaphragm is plane, radius of curvature INF, with a thickness of B；
The object side of 4th lens is aspherical, radius of curvature 8.13, the 4th lens with a thickness of 5.58, roll over
Penetrating rate is 1.53, Abbe number 56.2, the image side surfaces of the 4th lens be it is aspherical, radius of curvature is -16.19, and the 4th is saturating
The distance of the image side surface of mirror to the object side of the 5th lens is 0.5；
The object side of 5th lens is spherical surface, and radius of curvature is -141.26, the 5th lens with a thickness of 1.72,
Refractive index is 1.67, Abbe number 43.5, and the object side of the 6th lens is spherical surface, radius of curvature 5.81, the 6th lens
With a thickness of 5.86, refractive index 1.5, Abbe number 70.8, the image side surface of the 6th lens is spherical surface, radius of curvature
It is -13.21, the distance of image side surface to the object side of the 7th lens of the 6th lens is 0.2；
The object side of 7th lens is aspherical, radius of curvature 133.22, the 7th lens with a thickness of 3.21,
Refractive index is 1.54, Abbe number 55.1, and the image side surface of the 7th lens is aspherical, radius of curvature 6.95, and the 7th thoroughly
The distance of the image side surface of mirror to the object side of the 8th lens is 1；
The object side of 8th lens is spherical surface, radius of curvature 12.1, the 8th lens with a thickness of 2.41, reflect
Rate is 1.78, Abbe number 34.1, and the image side surface of the 8th lens is spherical surface, radius of curvature 75.38, the picture of the 8th lens
The distance of side to imaging surface is C；
The circular cone coefficient of the object side of the third lens is 0, and quadravalence asphericity coefficient is -3.70E-05, and six ranks are non-
Asphere coefficient is -2.26E-06, and eight rank asphericity coefficients are -1.54E-08, and ten rank asphericity coefficients are 4.54E-12, the
The circular cone coefficient of the image side surface of three lens be 0, quadravalence asphericity coefficient be 7.22E-04, six rank asphericity coefficients be-
1.62E-07, eight rank asphericity coefficients are -5.18E-11, and ten rank asphericity coefficients are 5.26E-10；
The circular cone coefficient of the object side of 4th lens is 0, and quadravalence asphericity coefficient is -3.29E-06, and six ranks are non-
Asphere coefficient is -1.13E-07, and eight rank asphericity coefficients are 6.17E-10, and ten rank asphericity coefficients are 7.28E-12, the
The circular cone coefficient of the image side surface of four lens is 0, and quadravalence asphericity coefficient is 5.21E-05, and six rank asphericity coefficients are
7.90E-12, eight rank asphericity coefficients are -4.79E-10, and ten rank asphericity coefficients are 3.94E-05；
The circular cone coefficient of the object side of 7th lens is 0, and quadravalence asphericity coefficient is 4.18E-05, six rank aspheric
Face coefficient be 3.77E-07, eight rank asphericity coefficients be 4.47E-11, ten rank asphericity coefficients be -3.09E-10, the 7th
The circular cone coefficient of the image side surface of lens be 0, quadravalence asphericity coefficient be 5.62E-04, six rank asphericity coefficients be-
6.92E-08, eight rank asphericity coefficients are 2.43E-08, and ten rank asphericity coefficients are 8.37E-13.
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| JP2002082283A (en) * | 2000-09-07 | 2002-03-22 | Mamiya Op Co Ltd | Wide angle zoom lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477265A (en) * | 2011-04-12 | 2013-12-25 | 株式会社尼康 | Zoom lens, imaging apparatus, and manufacturing method for zoom lens |
| CN102621659A (en) * | 2012-01-17 | 2012-08-01 | 福州开发区鸿发光电子技术有限公司 | Two-component optically compensated zoom lens |
| CN103823295A (en) * | 2014-03-07 | 2014-05-28 | 福建福光数码科技有限公司 | Electric-zooming day and night dual-purpose pick-up lens |
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Address after: 314000 No.188, Taojing Road, Gaozhao street, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Zhongrun Optical Technology Co.,Ltd. Address before: 314000 Room 2F201-6, Building 6, Jiaxing Photovoltaic Science Park, 1288 Kanghe Road, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee before: JIAXING ZHONGRUN OPTICAL SCIENCE AND TECHNOLOGY Co.,Ltd. |