CN109143555A - A kind of zoom lens - Google Patents
A kind of zoom lens Download PDFInfo
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- CN109143555A CN109143555A CN201811062993.XA CN201811062993A CN109143555A CN 109143555 A CN109143555 A CN 109143555A CN 201811062993 A CN201811062993 A CN 201811062993A CN 109143555 A CN109143555 A CN 109143555A
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- lens
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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
-
- 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
-
- 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
- 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
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Abstract
The invention discloses a kind of zoom lens, with matching degree on the basis of improving resolution ratio, enhanced product performance with product structure.Zoom lens, it include: the first fixed lens group, variable focus lens package, the second fixed lens group and the compensation lens group set gradually along light incident direction, wherein: total focal power of the second fixed lens group is positive, total focal power of compensation lens group is positive, and variable focus lens package and compensation lens group can be moved along optical axis direction；First fixed lens group includes setting gradually the first lens, the second lens, the third lens and the 4th lens along object side to image side direction；First lens are negative-power lenses, and the second lens are positive power lens, and the third lens are positive power lens, and the 4th lens are positive power lens.
Description
Technical field
The present invention relates to optical devices technologies fields, more particularly to a kind of zoom lens.
Background technique
Currently, the monitoring to occasions such as large-scale square, road or forest protections had both needed global general view, it is also desirable to can
Realize the amplification track lock to highest priority.This just need it is a kind of can autozoom take into account wide-angle and the big multiplying power of focal length becomes
Zoom lens.
The multicomponent that existing zoom lens optical structure has the sum of 2 constituent elements to be generally configured with 3 groups or more, wherein 2 groups
Meta structure has lesser volume, but its multiplying power is usually less than 4.5 times, and multicomponent structure is generally configured with 10 times or more of times
Rate, for example, 4 cluster structures are also able to achieve 20 times or more of multiplying power.
It can satisfy high definition requirement in existing common big multiplying power zoom lens, often overall length is too long, volume is larger, difficult
To adapt to the requirement of miniaturization hemisphere machine core product；And the satisfactory zoom lens zoom ratio of volume is small or pixel is relatively low.
Summary of the invention
The purpose of the embodiment of the present invention is that a kind of zoom lens is provided, to improve product on the basis of improving resolution ratio
The matching degree of performance and product structure.
The embodiment of the invention provides a kind of zoom lens, comprising: the first fixation set gradually along light incident direction
Lens group, variable focus lens package, the second fixed lens group and compensation lens group, in which:
Total focal power of second fixed lens group is positive, and total focal power of the compensation lens group is positive, the change
Focus lens group and the compensation lens group can be moved along optical axis direction；
First fixed lens group includes setting gradually the first lens, the second lens, third along object side to image side direction
Lens and the 4th lens；First lens are negative-power lenses, and second lens are positive power lens, described the
Three lens are positive power lens, and the 4th lens are positive power lens.
In embodiments of the present invention, optionally, the focal length f of the variable focus lens package1', the focal length of the compensation lens group
f2' and focal length f of the zoom lens under short focus statew' between meet:
-2.1<f1'/fw'<-1；
3.8<f2'/fw'<4.8。
In any embodiment of the present invention, optionally, the surface of first lens towards the image side is concave surface, described
The surface of second lens towards the object side is convex surface, and the surface of the third lens towards the object side is convex surface, described the
The surface of four lens towards the image side is concave surface.
In embodiments of the present invention, optionally, the variable focus lens package includes setting gradually along object side to image side direction
5th lens, the 6th lens and the 7th lens, the 5th lens are negative-power lenses, and the 6th lens are negative light focus
Lens are spent, the 7th lens are positive power lens.
In any embodiment of the present invention, optionally, the surface of the 5th lens towards the image side is concave surface, described
Surface of 6th lens towards the object side and the surface towards the image side are convex surface, and the 7th lens are described in
The surface of object side is concave surface.
In embodiments of the present invention, optionally, the material of the 6th lens is glass, the Abbe number of the 6th lens
Vd32 meets: Vd32 >=70.
In any embodiment of the present invention, optionally, second fixed lens group include along object side to image side direction according to
The 8th lens, the 9th lens, the tenth lens and the 11st lens of secondary setting, the 8th lens are positive power lens,
9th lens are positive power lens, and the tenth lens are positive power lens, and the 11st lens are negative light focus
Spend lens.
In embodiments of the present invention, optionally, the 8th lens be include at least a piece of focal power be positive it is aspherical
The lens subgroup of eyeglass, the surface of the 9th lens towards the object side and the surface towards the image side are convex surface,
The surface of tenth lens towards the object side and the surface towards the image side are convex surface, the 11st lens court
Surface to the object side and the surface towards the image side are concave surface.
In any embodiment of the present invention, optionally, the materials of the tenth lens is glass, the tenth lens Ah
Shellfish number Vd43 meets: Vd43 >=66；
The material of 11st lens is glass, and the refractive index nd44 of the 11st lens meets: nd44 >=1.8.
In embodiments of the present invention, optionally, the compensation lens group includes setting gradually along object side to image side direction
12nd lens and the 13rd lens, the 12nd lens are positive power lens, and the 13rd lens are negative power
Lens.
In any embodiment of the present invention, optionally, the 12nd lens be aspherical lens lens, the described 13rd
The surface of lens towards the object side is concave surface.
In embodiments of the present invention, optionally, the material of the 12nd lens be glass, the 12nd lens Ah
Shellfish number Vd51 meets: Vd51 >=66.
In any embodiment of the present invention, optionally, the material of the aspherical lens is glass or plastic cement.
In embodiments of the present invention, optionally, the zoom lens, further include be set to the variable focus lens package with it is described
Aperture diaphragm between second fixed lens group.
In the zoom lens of the technical program, making the first fixed lens group includes setting gradually along object side to image side direction
First lens, the second lens, the third lens and the 4th lens；First lens are negative-power lenses, and the second lens are positive light
Power lenses, the third lens are positive power lens, and the 4th lens are positive power lens, and pass through the second fixed lens group edge
The movement of optical axis changes focal length, while a position can be found along the cooperative movement of optical axis by compensating lens group, thus
Image planes position can be made constant, and imaging clearly.Compared with prior art, the zoom lens of the technical program can be very good
The maximum length of control system, so that properties of product and apparent size are matched well, to can be widely applied to
The technical fields such as safety monitoring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the zoom lens of the embodiment of the present invention；
Fig. 2-1 is the optical transfer function curve of the visible light part of the zoom lens short focus state of the embodiment of the present invention
Figure；
Fig. 2-2 is the optical transfer function curve of the visible light part of the zoom lens focal length state of the embodiment of the present invention
Figure；
Fig. 3-1 is the filed curvature curve graph of the visible light part of the zoom lens short focus state of the embodiment of the present invention；
Fig. 3-2 is the filed curvature curve graph of the visible light part of the zoom lens focal length state of the embodiment of the present invention；
Fig. 4-1 is the axial chromatic aberration curve graph of the visible light part of the zoom lens short focus state of the embodiment of the present invention；
Fig. 4-2 is the axial chromatic aberration curve graph of the visible light part of the zoom lens focal length state of the embodiment of the present invention；
Fig. 5-1 is the chromatic longitudiinal aberration curve graph of the visible light part of the zoom lens short focus state of the embodiment of the present invention；
Fig. 5-2 is the chromatic longitudiinal aberration curve graph of the visible light part of the zoom lens focal length state of the embodiment of the present invention.
Appended drawing reference:
1- zoom lens；
The first fixed lens group of 2-；
The first lens of 21-；
The second lens of 22-；
23- the third lens；
The 4th lens of 24-；
3- variable focus lens package；
The 5th lens of 31-；
The 6th lens of 32-；
The 7th lens of 33-；
The second fixed lens group of 4-；
The 8th lens of 41-；
The 9th lens of 42-；
The tenth lens of 43-；
The 11st lens of 44-；
5- compensates lens group；
The 12nd lens of 51-；
The 12nd lens of 52-；
6- aperture diaphragm；
7- optical filter；
8- image planes.
Specific embodiment
For on the basis of improving resolution ratio, the matching degree enhanced product performance with product structure, the embodiment of the present invention is mentioned
A kind of zoom lens is supplied.To make the object, technical solutions and advantages of the present invention clearer, by the following examples to the present invention
It is described in further detail.
When the application refers to ordinal numbers such as " first ", " second ", " third " or " the 4th ", unless based on context its
The meaning of certain order of representation, it is appreciated that being only to distinguish to be used.
As shown in Figure 1, the embodiment of the invention provides a kind of zoom lens 1, comprising: set gradually along light incident direction
The first fixed lens group 2, variable focus lens package 3, the second fixed lens group 4 and compensation lens group 5, in which:
Total focal power of second fixed lens group 4 is positive, compensation lens group 5 total focal power be positive, variable focus lens package 3 with
And compensation lens group 5 can be moved along optical axis direction；
The focal length f of variable focus lens package 31', compensate the focal length f of lens group 52' and focal length of the zoom lens 1 under short focus state
fw' between meet:
-2.1<f1'/fw'<-1；
3.8<f2'/fw'<4.8。
In embodiments of the present invention, object side refers to that the side where object captured by zoom lens, image side refer to object
The side being imaged in zoom lens.
Further, as shown in Figure 1, in embodiments of the present invention, the first fixed lens group 2, variable focus lens package 3, second
Fixed lens group 4 and compensation 5 four groups of lens of lens group are arranged successively in order from the object side to image side, specifically:
First fixed lens group 2: total focal power is positive, and successively includes: from the object side to image side
First lens 21: focal power is negative, and the surface towards image side is concave surface；
Second lens 22: focal power is positive, and the surface towards object side is convex surface；
The third lens 23: focal power is positive, and the surface towards object side is convex surface；
4th lens 24: focal power is positive, and the surface towards object side is concave surface；
Variable focus lens package 3: total focal power is negative, and successively includes: from the object side to image side
5th lens 31: focal power is negative, and the surface towards image side is concave surface；
6th lens 32: focal power is negative, and the surface towards object side is convex surface；
7th lens 33: focal power is positive, and the surface towards object side is concave surface；
Second fixed lens group 4: total focal power is positive, and successively includes: from the object side to image side
8th lens 41: being the lens subgroup for including the aspherical lens that at least a piece of focal power is positive；
9th lens 42: focal power is positive, and the surface towards object side and the surface towards image side are convex surface；
Tenth lens 43: focal power is positive, and the surface towards object side and the surface towards image side are convex surface；
11st lens 44: focal power is negative, and the surface towards object side and the surface towards image side are concave surface；
Compensation lens group 5: total focal power is positive, and successively includes: from the object side to image side
12nd lens 51: the aspherical lens lens being negative for focal power；
13rd lens 52: focal power is negative, and the surface towards object side is concave surface.
In any embodiment of the present invention, optionally, the material of aspherical lens is glass or plastic cement.
Can make in this way include the lens group of aspherical lens whole angular within the scope of the restriction of the application
Meanwhile the coefficient for characterizing aspherical shape being made to have certain variation freedom degree.
In this way, in embodiments of the present invention, when the material of the 6th lens 32 is glass, the Abbe number of the 6th lens 32
Vd32 meets: Vd32 >=70.
When the material of the tenth lens 43 is glass, the Abbe number Vd43 of the tenth lens 43 meets: Vd43 >=66.
When the material of the 11st lens 44 is glass, the refractive index nd44 of the 11st lens 44 meets: nd44 >=1.8.
When the material of the 12nd lens 51 is glass, the Abbe number Vd51 of the 12nd lens 51 meets: Vd51 >=66.
Further, as shown in Figure 1, in embodiments of the present invention, optionally, zoom lens 1 further includes being set to zoom
Aperture diaphragm 6 between lens group 3 and the second fixed lens group 4.
By between variable focus lens package 3 and the second fixed lens group 4 be arranged aperture diaphragm 6, can effectively control into
Enter bore and the position of the light beam to 1 system of zoom lens.
With continued reference to shown in Fig. 1, in embodiments of the present invention, zoom lens 1 can also include being set in turn in compensation thoroughly
Optical filter 7 and image planes 8 of the microscope group 5 close to image side side.
The application is illustrated for the camera lens provided below for the particular content according to the application:
Wherein, the radius of curvature R of each lens of zoom lens, center thickness Tc, refractive index Nd and Abbe number Vd be such as
Shown in table 1:
Table 1
Wherein, the 12nd, 13,24, the corresponding mirror surface in 25 faces can be expressed as, rise Z and bore Y, R value, circular cone coefficient K,
Multiple term coefficient A4, A6, A8, A10, A12, A14, A16 relational expression:
Z=[(1/R)2Y]/1+[1-(1+k)(1/R)2Y2]1/2+A4Y4+A6Y6+A8Y8+A10Y10+A12Y12+A14Y14+
A16Y16
It is calculated, the coefficient in the 14th face:
K=-1.06602；A4=-3.0194886e-006；A6=-3.0736896e-008；
A8=2.2923843e-008；A10=-1.126297e-009；A12=4.2787454e-012；
A14=3.7809138e-013；A16=-5.2449137e-015；
The coefficient in the 15th face:
K=-15.86098；A4=7.466835e-005；A6=-7.3398369e-007；
A8=7.4809103e-008；A10=-3.8301604e-009；A12=8.3381621e-011；
A14=-8.0595287e-013；A16=1.7502908e-015；
The coefficient in the 21st face:
K=-0.012620；A4=-8.3637147e-007；A6=-2.8385117e-008；
A8=0；A10=0；A12=0；A14=0；A16=0；
The coefficient in the 22nd face:
K=0.031206；A4=-5.5076144e-008；A6=-1.2965681e-007；
A8=0；A10=0；A12=0；A14=0；A16=0.
Camera lens provided by the embodiment has following optical technology index:
Optics overall length TTL≤88mm；
Lens focus f ': 5 (W) -110 (T) mm；
The field angle of camera lens: 67.2 ° (W) -3.1 ° (T)；
The optical distortion of camera lens: -8% (W) -+1% (T)；
The aperture FNO.:F1.6 (W) of lens system-F4.0 (T)；
Camera lens image planes size: 1/3 〞.
Note: W indicates short focus, and T indicates focal length.
It is for further analysis to zoom lens provided by the embodiments of the present application below by optical transfer function:
Optical transfer function be for evaluating the mode that the image quality of a zoom lens is more accurate, intuitive and common,
Its curve is higher, more smooth, shows that the image quality of system is better, (such as: spherical aberration, coma, astigmatism, the curvature of field, axis to various aberrations
To color difference, chromatic longitudiinal aberration etc.) carry out good correction.
As shown in Fig. 2, be visible light wave range optical transfer function (MTF) curve graph, from Fig. 2-1 it is found that the zoom
The optical transfer function curve of the visible light part of camera lens short focus state is smoother, concentrates, and full filed (half image height Y '=
3mm) MTF average value reaches 0.65 or more；From in Fig. 2-2 it is found that the optics of the visible light part of the zoom lens focal length state
Transmission function (MTF) curve graph is smoother, concentrates, and full filed (half image height Y '=3mm) MTF average value is close to 0.5；It can be seen that
Zoom lens provided in this embodiment can reach very high resolution ratio, meet the imaging of 1/3 inch of 3,000,000 pixel camera machine
It is required that.
As shown in Fig. 3-1 and Fig. 3-2, the corresponding filed curvature figure of zoom lens visible light part is by three curve T and three
Curve S is constituted；Wherein, three curve T respectively indicate the corresponding meridional beam of three kinds of wavelength (486nm, 587nm and 656nm)
The aberration of (Tangential Rays), three curve S respectively indicate the corresponding arc of three kinds of wavelength (486nm, 587nm and 656nm)
Swear the aberration of light beam (Sagittial Rays), meridianal curvature of field value and Sagittal field curvature value are smaller, illustrate that image quality is better.Such as figure
Shown in 3-1, the meridianal curvature of field value of short focus state is controlled in -0.02~-0.001mm range, the control of Sagittal field curvature value -
Within 0.014~0.01mm range；As shown in figure 3-2, the meridianal curvature of field value of focal length state is controlled in -0.06~0.019mm model
In enclosing, Sagittal field curvature value is controlled within -0.027~0.046mm range.
As shown in Fig. 4-1 and Fig. 4-2, the corresponding axial chromatic aberration figure of zoom lens visible light part, curve is attached in y-axis in figure
Nearly variation, closer to y-axis, illustrates that zoom lens image quality is better.As shown in Fig. 4-1, the control of short focus state axial chromatic aberration
Between -0.04~+0.014mm；As shown in the Fig. 4-2, focal length state axial chromatic aberration control -0.038~+0.055mm it
Between.
As shown in Fig. 5-1 and Fig. 5-2, the corresponding chromatic longitudiinal aberration figure of zoom lens visible light part, curve is closer to y in figure
Axis illustrates that zoom lens image quality is better.As shown in fig. 5-1, the chromatic longitudiinal aberration control of short focus state -0.0005~+
Between 0.0024mm；As shown in Fig. 5-2, the chromatic longitudiinal aberration of focal length state is controlled between-0.0032~+0.00025mm.
To sum up, the embodiment of the invention provides a kind of big multiplying power, large aperture, high-resolution zoom lens.Using four
Lens group, the optical lens of totally ten three specific structure shapes, and be arranged successively according to particular order from object side to image side, and
By the distribution of the focal power of each optical lens, while aspherical lens and adaptable optical glass material are used, so that becoming
The structure type of zoom lens, the parameters such as refractive index, the Abbe number of lens are matched with image-forming condition.And then make the ball of zoom lens
Difference, coma, astigmatism, the curvature of field, chromatic longitudiinal aberration, axial chromatic aberration are corrected well；To reach under the premise of image planes are bigger,
Meet big multiplying power, large aperture, high-resolution requirement simultaneously, and can be realized the more preferably low imaging performance according under environment；Value
It obtains one to be mentioned that, the zoom lens of the technical program, can be good at the maximum length for controlling Zoom lens system, so that product
Performance and outer dimension are matched well；Therefore, the fields such as safety monitoring can be widely applied to.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (14)
1. a kind of zoom lens characterized by comprising the first fixed lens group for setting gradually along light incident direction becomes
Focus lens group, the second fixed lens group and compensation lens group, in which:
Total focal power of second fixed lens group is positive, and total focal power of the compensation lens group is positive, and the zoom is saturating
Microscope group and the compensation lens group can be moved along optical axis direction；
First fixed lens group includes setting gradually the first lens, the second lens, the third lens along object side to image side direction
And the 4th lens；First lens are negative-power lenses, and second lens are positive power lens, and the third is saturating
Mirror is positive power lens, and the 4th lens are positive power lens.
2. zoom lens as described in claim 1, which is characterized in that the focal length f of the variable focus lens package1', the compensation is saturating
The focal length f of microscope group2' and focal length f of the zoom lens under short focus statew' between meet:
-2.1<f1'/fw'<-1；
3.8<f2'/fw'<4.8。
3. zoom lens as described in claim 1, which is characterized in that the surface of first lens towards the image side is recessed
Face, the surface of second lens towards the object side are convex surface, and the surface of the third lens towards the object side is convex surface,
The surface of 4th lens towards the image side is concave surface.
4. zoom lens as described in claim 1, which is characterized in that the variable focus lens package includes along object side to image side direction
The 5th lens, the 6th lens and the 7th lens set gradually, the 5th lens are negative-power lenses, and the described 6th thoroughly
Mirror is negative-power lenses, and the 7th lens are positive power lens.
5. zoom lens as claimed in claim 4, which is characterized in that the surface of the 5th lens towards the image side is recessed
Face, the surface of the 6th lens towards the object side and the surface towards the image side are convex surface, the 7th lens
Surface towards the object side is concave surface.
6. zoom lens as claimed in claim 4, which is characterized in that the material of the 6th lens be glass, the described 6th
The Abbe number Vd32 of lens meets: Vd32 >=70.
7. zoom lens as described in claim 1, which is characterized in that second fixed lens group includes along object side to image side
The 8th lens, the 9th lens, the tenth lens and the 11st lens that direction is set gradually, the 8th lens are positive light coke
Lens, the 9th lens are positive power lens, and the tenth lens are positive power lens, and the 11st lens are negative
Power lenses.
8. zoom lens as claimed in claim 7, which is characterized in that the 8th lens be include that at least a piece of focal power is
The lens subgroup of positive aspherical lens, the surface of the 9th lens towards the object side and the surface towards the image side
It is convex surface, the surface of the tenth lens towards the object side and the surface towards the image side are convex surface, and described
Surface of 11 lens towards the object side and the surface towards the image side are concave surface.
9. zoom lens as claimed in claim 7, which is characterized in that the material of the tenth lens be glass, the described tenth
The Abbe number Vd43 of lens meets: Vd43 >=66；
The material of 11st lens is glass, and the refractive index nd44 of the 11st lens meets: nd44 >=1.8.
10. zoom lens as described in claim 1, which is characterized in that the compensation lens group includes along object side to image side side
To the 12nd lens set gradually and the 13rd lens, the 12nd lens are positive power lens, and the described 13rd thoroughly
Mirror is negative-power lenses.
11. zoom lens as claimed in claim 10, which is characterized in that the 12nd lens are aspherical lens lens,
The surface of 13rd lens towards the object side is concave surface.
12. zoom lens as claimed in claim 10, which is characterized in that the material of the 12nd lens is glass, described
The Abbe number Vd51 of 12nd lens meets: Vd51 >=66.
13. the zoom lens as described in claim 8 or 11, which is characterized in that the material of the aspherical lens be glass or
Plastic cement.
14. zoom lens as described in claim 1, which is characterized in that further include be set to the variable focus lens package with it is described
Aperture diaphragm between second fixed lens group.
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|---|---|---|---|
| CN201811062993.XA CN109143555B (en) | 2018-09-12 | 2018-09-12 | Zoom lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811062993.XA CN109143555B (en) | 2018-09-12 | 2018-09-12 | Zoom lens |
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| CN109143555B CN109143555B (en) | 2020-08-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880296A (en) * | 2020-08-12 | 2020-11-03 | 江西特莱斯光学有限公司 | Large-range zoom lens |
| CN113490878A (en) * | 2020-03-16 | 2021-10-08 | 华为技术有限公司 | Zoom lens, camera module and mobile terminal |
| CN113544565A (en) * | 2020-03-16 | 2021-10-22 | 华为技术有限公司 | Zoom lens, camera module and mobile terminal |
| CN113885184A (en) * | 2021-10-08 | 2022-01-04 | 嘉兴中润光学科技股份有限公司 | Long-focus zoom lens and image pickup device |
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| CN113490878A (en) * | 2020-03-16 | 2021-10-08 | 华为技术有限公司 | Zoom lens, camera module and mobile terminal |
| CN113544565A (en) * | 2020-03-16 | 2021-10-22 | 华为技术有限公司 | Zoom lens, camera module and mobile terminal |
| CN111880296A (en) * | 2020-08-12 | 2020-11-03 | 江西特莱斯光学有限公司 | Large-range zoom lens |
| CN113885184A (en) * | 2021-10-08 | 2022-01-04 | 嘉兴中润光学科技股份有限公司 | Long-focus zoom lens and image pickup device |
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| CN109143555B (en) | 2020-08-04 |
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