CN108761749A - Zoom lens - Google Patents
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- CN108761749A CN108761749A CN201810927452.2A CN201810927452A CN108761749A CN 108761749 A CN108761749 A CN 108761749A CN 201810927452 A CN201810927452 A CN 201810927452A CN 108761749 A CN108761749 A CN 108761749A
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- 230000003287 optical effect Effects 0.000 claims abstract description 38
- 239000000571 coke Substances 0.000 claims abstract description 15
- 239000006185 dispersion Substances 0.000 claims description 74
- 239000011521 glass Substances 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 230000004075 alteration Effects 0.000 description 87
- 230000000694 effects Effects 0.000 description 6
- 238000012937 correction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004304 visual acuity Effects 0.000 description 4
- 238000010226 confocal imaging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 206010010071 Coma Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004297 night vision Effects 0.000 description 2
- 238000012536 packaging technology Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 241000226585 Antennaria plantaginifolia Species 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- 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
- G02B15/163—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
- G02B15/167—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
- G02B15/173—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
-
- 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
Abstract
The present invention relates to a kind of zoom lens, including:The first lens group with positive light coke, the second lens group with negative power, diaphragm, the third lens group with positive light coke, the 4th lens group with positive light coke and the 5th lens group with negative power being arranged in order from object side to image side along optical axis；The camera lens when from wide-angle side to telescope end zoom, fix by first lens group, and the second lens group zoom, the third lens group is fixed, and the 4th lens group image planes position compensation, the 5th lens group is fixed.Zoom lens according to the present invention is a kind of day and night confocal, big multiplying power, aperture is constant, distortion is small, the zoom lens of high image quality.
Description
Technical field
The present invention relates to Optical System Design field more particularly to a kind of zoom lens of security protection industry.
Background technology
So far from twentieth century end, with the chips such as digital camera and video camera photoelectric device CCD or CMOS mounted
The rapid development of technology so that the image quality of matched optical system is also higher and higher.Especially in security protection industry, it is
The requirement for reaching day and night confocal, big multiplying power, high pixel, emerges the optical lens for largely meeting such requirement in the market.
In recent years, be dedicated to army's security protection, enterprise's security protection and civilian, recognition of face, the photographic devices such as brush face is entered just
In extensive use.In order to reach the shooting of visible light on daytime and the shooting of night near-infrared, optical lens must just have from can
Light-exposed wave-length coverage is near infrared wavelength region almost confocal imaging effect；In order to enable camera lens under different temperatures environment just
Often work, optical lens just must in high and low temperature environment not empty coke；In order to reach image quality shooting high over long distances, optical frames
Head must just have the high zoom lens of long-focus range, zoom ratio；In order to make focusing more stablize, optical lens must just have
For the performance that when focusing from wide-angle side to telescope end, aperture is kept constant.In order to reach accurate imaging, optical distortion must
It must be small as far as possible.
Existing optical lens system generally existing zoom ratio is small, distortion is very big, and wide-angle side and telescope end photogrammetric distortion
Different larger, image quality is relatively low, and f-number is from wide-angle side to the non-constant problem of telescope end.
Invention content
It is an object of the present invention to solve the above problems, provide one kind can day and night confocal, big multiplying power and aperture it is constant
Zoom lens.
For achieving the above object, the present invention provides a kind of zoom lens, including:Along optical axis from object side to image side successively
The first lens group with positive light coke of arrangement, the second lens group with negative power, diaphragm, the with positive light coke
Three lens groups, the 4th lens group with positive light coke and the 5th lens group with negative power；
The camera lens when from wide-angle side to telescope end zoom, fix by first lens group, and second lens group becomes
Coke, the third lens group are fixed, and the 4th lens group image planes position compensation, the 5th lens group is fixed；Along optical axis from
Object side to image side,
Cemented doublet group that first lens group is made of negative-power lenses and positive power lens successively and just
Power lenses group forms；
Second lens group is made of negative-power lenses group, positive power lens and negative-power lenses successively；
Three glue that the third lens group is made of negative-power lenses, positive power lens and negative-power lenses successively
Close the cemented doublet group and positive power lens composition of lens set and positive power lens and negative-power lenses composition；
4th lens group is formed by positive power lens and by positive power lens and negative-power lenses successively
Cemented doublet group composition；
5th lens group is made of negative-power lenses and positive power lens successively.
According to an aspect of the present invention, along optical axis from object side to image side, first lens in first lens group
For male-female lens；
First lens in second lens group are male-female lens, last a piece of in second lens group
The object side of mirror is concave surface；
First lens in the third lens group are male-female lens；
First lens in 5th lens group are male-female lens.
According to an aspect of the present invention, the camera lens telescope end focal length ft and the camera lens wide-angle side focal length
Fw meets relational expression：7≤ft/fw≤13；
The camera lens meets relational expression with the camera lens in the f-number FNOw of wide-angle side in the f-number FNOt of telescope end：
0.7≤FNOw/FNOt≤1.3。
According to an aspect of the present invention, along optical axis from object side to image side, last a piece of lens in first lens group
Image side surface to second lens group in first lens object side distance dt, it is last a piece of in first lens group
The distance d of the object side of first lens in the image side surface of lens to second lens groupwAnd the wide-angle side of the camera lens
Meet relational expression between focal length fw：4≤(dt-dw)/fw≤6。
According to an aspect of the present invention, the focal length f1 of first lens group is with the focal length f2's of second lens group
Absolute value meets relational expression：4≤f1/|f2|≤6.
According to an aspect of the present invention, the focal length f3 of the third lens group and the focal length f4 of the 4th lens group are full
Sufficient relational expression：0.5≤f3/f4≤1.5.
According to an aspect of the present invention, focal length fws of the focal length f5 Yu the camera lens of the 5th lens group in wide-angle side
Meet relational expression：f5/fw≥8.
According to an aspect of the present invention, first lens group includes at least two low dispersion lens, described low
The Abbe number Vd1 of dispersive glass lens meets：65≤Vd1≤100.
According to an aspect of the present invention, second lens group includes a high-dispersion glass lens, the high dispersion
The Abbe number Vd2 and refractive index Nd2 of glass lens meet：15≤Vd2≤25,1.75≤Nd2≤2.1；And
The Abbe number Vd3 of at least one low dispersion lens, the low dispersion lens meets：60≤Vd3≤
100。
According to an aspect of the present invention, the third lens group includes at least two low dispersion lens, described low
The Abbe number Vd4 of dispersive glass lens meets：65≤Vd4≤100.
According to an aspect of the present invention, the 4th lens group includes a high-dispersion glass lens, the high dispersion
The Abbe number Vd5 and refractive index Nd5 of glass lens meet：15≤Vd5≤30,1.75≤Nd5≤1.95；And
The Abbe number Vd6 of one low dispersion lens, the low dispersion lens meets：60≤Vd6≤100.
A scheme according to the present invention, enables to camera lens that can also ensure without using aspherical lens
The optical quality of camera lens, and ensure that the stability under different temperatures and humidity environment, it can be adapted in complex environment；
The position of diaphragm ensure that smaller aberration.
A scheme according to the present invention, during from wide-angle side to telescope end zoom, the first lens group is fixed, the
Two lens group zooms, the third lens group are fixed, and the 4th lens group image planes position compensation, the 5th lens group is fixed；From wide-angle side to
The second lens group is first moved from object side to image side in telescope end zooming procedure, then is moved to object side, and meeting this condition can be reduced pair
Burnt stroke reduces camera lens volume.
A scheme according to the present invention enables to focussing process of the zoom lens from wide-angle side to telescope end to realize big
Multiplying power zoom, and f-number is more constant, to be easier to focus under different object distances.
A scheme according to the present invention is, it can be achieved that multiplying power small size, and so that the first lens group and the second lens group greatly
Spherical aberration, the curvature of field obtain well-corrected.So that the aberration of wide-angle side and telescope end is preferably balanced.
A scheme according to the present invention reaches balance, it can be achieved that the aberration of the third lens group and the 4th lens group distributes,
To reduce the tolerance sensitivities of the third lens group and the 4th lens group, the manufacturability for improving packaging technology is promoted.
A scheme according to the present invention, focal length and the camera lens of the 5th lens group meet relational expression in the focal length of wide-angle side：
f5/fw≥8.Meet this conditional, the effect that distortion can be reduced, correct the curvature of field.
A scheme according to the present invention, the first lens group include at least two low dispersion lens, the low dispersion
The Abbe number Vd1 of glass lens meets：65≤Vd1≤100.Meet this conditional, the infrared resolving power of recoverable.
A scheme according to the present invention, the second lens group include a high-dispersion glass lens, the high-dispersion glass
The Abbe number Vd2 and refractive index Nd2 of lens meet：15≤Vd2≤25,1.75≤Nd2≤2.1；And at least one low dispersion
The Abbe number Vd3 of glass lens, the low dispersion lens meets：60≤Vd3≤100.Meet this conditional, color can be reduced
Difference simultaneously corrects infrared solution picture.
A scheme according to the present invention, the third lens group include at least two low dispersion lens, low dispersion
The Abbe number Vd4 of lens meets：65≤Vd4≤100.Infrared defocusing amount can be reduced by meeting this condition, and preferably correct ball
Difference, coma and aberration.
A scheme according to the present invention, the 4th lens group include a high-dispersion glass lens, high-dispersion glass lens
Abbe number Vd5 and refractive index Nd5 meet：15≤Vd5≤30,1.75≤Nd5≤1.95；And a low dispersion is saturating
The Abbe number Vd6 of mirror, low dispersion lens meets：60≤Vd6≤100.Off-axis aberration can be reduced by meeting this condition.
A scheme according to the present invention, this optical lens use full glass lens structure, can correct aberration well,
Reach small, high quality the imaging of distortion.
This optical lens can realize the function of high zoom ratio, can reach between 7 times~13 times.
This optical lens can reach day and night confocal imaging effect, and night vision defocus is less than 8um.
This optical lens can under -40 ° of 80 ° of high temperature, low temperature environment not empty coke.
This optical lens during from wide-angle side to telescope end f-number it is constant, variable quantity is smaller.
This optical lens list component and assembling tolerance are excellent, there is preferable manufacturing.
Description of the drawings
Figure 1A, Figure 1B, Fig. 1 C are wide-angle sides (W) when object distance is infinity in embodiment 1 (S1), intermediate state (M), hope
The distally sectional view of (T)；
Fig. 2A, Fig. 2 B, Fig. 2 C are ball aberration, the multiplying power color of wide-angle side (W) when object distance is infinity in embodiment 1 (S1)
Difference, distortion figure；
Fig. 3 A, Fig. 3 B, Fig. 3 C are the ball aberration of intermediate state (M), multiplying power when object distance is infinity in embodiment 1 (S1)
Aberration, distortion figure；
Fig. 4 A, Fig. 4 B, Fig. 4 C are ball aberration, the multiplying power color of telescope end (T) when object distance is infinity in embodiment 1 (S1)
Difference, distortion figure；
Fig. 5 A, Fig. 5 B, Fig. 5 C are wide-angle sides (W) when object distance is infinity in embodiment 1 (S1), intermediate state (M), hope
The distally near-infrared spherical aberration of (T)；
Fig. 6 A, Fig. 6 B, Fig. 6 C are wide-angle sides (W) when object distance is infinity in embodiment 2 (S2), intermediate state (M), hope
Distally (T) sectional view；
Fig. 7 A, Fig. 7 B, Fig. 7 C are ball aberration, the multiplying power color of wide-angle side (W) when object distance is infinity in embodiment 2 (S2)
Difference, distortion figure；
Fig. 8 A, Fig. 8 B, Fig. 8 C are the ball aberration of intermediate state (M), multiplying power when object distance is infinity in embodiment 2 (S2)
Aberration, distortion figure；
Fig. 9 A, Fig. 9 B, Fig. 9 C are ball aberration, the multiplying power color of telescope end (T) when object distance is infinity in embodiment 2 (S2)
Difference, distortion figure；
Figure 10 A, Figure 10 B, Figure 10 C are wide-angle side (W), intermediate state when object distance is infinity in embodiment 2 (S2)
(M), the near-infrared spherical aberration of telescope end (T)；
Figure 11 A, Figure 11 B, Figure 11 C are wide-angle side (W), intermediate state when object distance is infinity in embodiment 3 (S3)
(M), the sectional view of telescope end (T)；
Figure 12 A, Figure 12 B, Figure 12 C be in embodiment 3 (S3) object distance be infinity when wide-angle side (W) ball aberration, times
Rate aberration, distortion figure；
Figure 13 A, Figure 13 B, Figure 13 C be in embodiment 3 (S3) object distance be infinity when intermediate state (M) ball aberration,
Ratio chromatism, distortion figure；
Figure 14 A, Figure 14 B, Figure 14 C be in embodiment 3 (S3) object distance be infinity when telescope end (T) ball aberration, times
Rate aberration, distortion figure；
Figure 15 A, Figure 15 B, Figure 15 C are wide-angle side (W), intermediate state when object distance is infinity in embodiment 3 (S3)
(M), the near-infrared spherical aberration of telescope end (T).
Figure 16 A, Figure 16 B, Figure 16 C be in embodiment 4 (S4) object distance be infinity when wide-angle side (W), intermediate state (M),
The sectional view of telescope end (T)；
Figure 17 A, Figure 17 B, Figure 17 C are the ball aberration of wide-angle side (W), multiplying power when object distance is infinity in embodiment 4 (S4)
Aberration, distortion figure；
Figure 18 A, Figure 18 B, Figure 18 C be in embodiment 4 (S4) object distance be infinity when intermediate state (M) ball aberration, times
Rate aberration, distortion figure；
Figure 19 A, Figure 19 B, Figure 19 C are the ball aberration of telescope end (T), multiplying power when object distance is infinity in embodiment 4 (S4)
Aberration, distortion figure；
Figure 20 A, Figure 20 B, Figure 20 C be in embodiment 4 (S4) object distance be infinity when wide-angle side (W), intermediate state (M),
The near-infrared spherical aberration of telescope end (T)；
Figure 21 A, Figure 21 B, Figure 21 C be in embodiment 5 (S5) object distance be infinity when wide-angle side (W), intermediate state (M),
Telescope end (T) sectional view；
Figure 22 A, Figure 22 B, Figure 22 C are the ball aberration of wide-angle side (W), multiplying power when object distance is infinity in embodiment 5 (S5)
Aberration, distortion figure；
Figure 23 A, Figure 23 B, Figure 23 C be in embodiment 5 (S5) object distance be infinity when intermediate state (M) ball aberration, times
Rate aberration, distortion figure；
Figure 24 A, Figure 24 B, Figure 24 C are the ball aberration of telescope end (T), multiplying power when object distance is infinity in embodiment 5 (S5)
Aberration, distortion figure；
Figure 25 A, Figure 25 B, Figure 25 C be in embodiment 5 (S5) object distance be infinity when wide-angle side (W), intermediate state (M),
The near-infrared spherical aberration of telescope end (T)；
Specific implementation mode
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 some of the present invention
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", the orientation or positional relationship expressed by "outside" are to be 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, with specific azimuth configuration and operation, 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.
Zoom lens according to the present invention includes the with positive light coke being arranged in order from object side to image side along optical axis
One lens group 1, the second lens group 2 with negative power, diaphragm S, the third lens group 3 with positive light coke, with positive light
4th lens group 4 of focal power and the 5th lens group 5 with negative power.
Zoom lens according to the present invention when from wide-angle side to telescope end zoom, fix, the second lens by the first lens group 1
2 zooms of group, the third lens group 3 are fixed, and 4 image planes position compensation of the 4th lens group, the 5th lens group 5 is fixed.
Zoom lens according to the present invention, along optical axis from object side to image side, the first lens group 1 is successively by negative-power lenses
With the cemented doublet group and positive power lens group composition of positive power lens composition；Second lens group 2 is successively by bearing light focus
Spend lens group, positive power lens and negative-power lenses composition；The third lens group 3 is successively by negative-power lenses, positive light focus
Spend three cemented doublet groups of lens and negative-power lenses composition and the glue of positive power lens and negative-power lenses composition
Close lens set and positive power lens composition；4th lens group 4 is successively by positive power lens and by positive power lens
With the cemented doublet group composition of negative-power lenses composition；5th lens group 5 is saturating by negative-power lenses and positive light coke successively
Microscope group at.
Zoom lens according to the present invention, along optical axis from object side to image side, first lens in the first lens group 1 are
Male-female lens；First lens in second lens group 2 are male-female lens, the last a piece of lens in the second lens group 2
Object side is concave surface；First lens in the third lens group 3 are male-female lens；First lens in 5th lens group 5 are
Male-female lens.
Above-mentioned setting according to the present invention, enables to camera lens that can also ensure without using aspherical lens
The optical quality of camera lens, and ensure that the stability under different temperatures and humidity environment, it can be adapted in complex environment；
The position of diaphragm ensure that smaller aberration.
In addition, during from wide-angle side to telescope end zoom, the first lens group 1 is fixed, 2 zoom of the second lens group,
The third lens group 3 is fixed, 4 image planes position compensation of the 4th lens group, and the 5th lens group 5 is fixed；From wide-angle side to telescope end zoom
The second lens group 2 is first moved from object side to image side in the process, then is moved to object side, and focusing stroke can be reduced by meeting this condition, contracting
Tiny lens volume.
Zoom lens according to the present invention, camera lens meets with camera lens in the focal length fw of wide-angle side in the focal length ft of telescope end to close
It is formula：7≤ft/fw≤13；Camera lens meets relationship with camera lens in the f-number FNOw of wide-angle side in the f-number FNOt of telescope end
Formula：0.7≤FNOw/FNOt≤1.3.Meet this conditional, enables to focusing of the zoom lens from wide-angle side to telescope end
The big multiplying power zooms of Cheng Shixian, and f-number is more constant, to be easier to focus under different object distances.
Zoom lens according to the present invention, along optical axis from object side to image side, the picture of last a piece of lens in the first lens group 1
The distance d of the object side of first lens in side to the second lens group 2t, in the first lens group 1 last a piece of lens image side
The distance d of the object side of first lens in face to the second lens group 2wAnd meet relationship between the wide-angle side focal length fw of camera lens
Formula：4≤(dt-dw)/fw≤6.Wherein, dt-dwIt is camera lens by wide-angle side to telescope end, the axial movement stroke of zoom group is long
Degree.Wherein, (dt-dw)/fw≤4 cause the second lens group to undertake focal power is excessive, and technique manufacturability is poor, camera lens quality is unstable
It is fixed；(dt-dwWhen)/fw >=6, zoom stroke becomes larger, and camera lens volume becomes larger, and cost increases.
The absolute value of the focal length f2 of zoom lens according to the present invention, the focal length f1 of the first lens group 1 and the second lens group 2
Meet relational expression：4≤f1/|f2|≤6.Meet this conditional, it can be achieved that multiplying power small size, and so that 1 He of the first lens group greatly
Second lens group, 2 spherical aberration, the curvature of field obtain well-corrected.So that the aberration of wide-angle side and telescope end is preferably balanced.
Zoom lens according to the present invention, the focal length f3 of the third lens group 3 and the focal length f4 of the 4th lens group 4 meet relationship
Formula：0.5≤f3/f4≤1.5.Meet this conditional, it can be achieved that the third lens group 3 and the aberration distribution of the 4th lens group 4 reach
Balance promotes the manufacturability for improving packaging technology to reduce the tolerance sensitivities of the third lens group 3 and the 4th lens group 4.
Zoom lens according to the present invention, the focal length f5 of the 5th lens group 5, which meets with camera lens in the focal length fw of wide-angle side, to close
It is formula：f5/fw≥8.Meet this conditional, the effect that distortion can be reduced, correct the curvature of field.
Zoom lens according to the present invention, the first lens group 1 include at least two low dispersion lens, the low dispersion
The Abbe number Vd1 of glass lens meets：65≤Vd1≤100.Meet this conditional, the infrared resolving power of recoverable.
Zoom lens according to the present invention, the second lens group 2 include a high-dispersion glass lens, the high-dispersion glass
The Abbe number Vd2 and refractive index Nd2 of lens meet：15≤Vd2≤25,1.75≤Nd2≤2.1；And at least one low dispersion
The Abbe number Vd3 of glass lens, the low dispersion lens meets：60≤Vd3≤100.Meet this conditional, color can be reduced
Difference simultaneously corrects infrared solution picture.
Zoom lens according to the present invention, the third lens group 3 include at least two low dispersion lens, low dispersion
The Abbe number Vd4 of lens meets：65≤Vd4≤100.Infrared defocusing amount can be reduced by meeting this condition, and preferably correct ball
Difference, coma and aberration.
Zoom lens according to the present invention, the 4th lens group 4 include a high-dispersion glass lens, high-dispersion glass lens
Abbe number Vd5 and refractive index Nd5 meet：15≤Vd5≤30,1.75≤Nd5≤1.95；And a low dispersion is saturating
The Abbe number Vd6 of mirror, low dispersion lens meets：60≤Vd6≤100.Off-axis aberration can be reduced by meeting this condition.
The setting of above-mentioned camera lens according to the present invention, this optical lens use full glass lens structure, can rectify well
Positive aberration reaches small, high quality the imaging of distortion.
This optical lens can realize the function of high zoom ratio, can reach between 7 times~13 times.
This optical lens can reach day and night confocal imaging effect, and night vision defocus is less than 8um.
This optical lens can under -40 ° of 80 ° of high temperature, low temperature environment not empty coke.
This optical lens during from wide-angle side to telescope end f-number it is constant, variable quantity is smaller.
This optical lens list component and assembling tolerance are excellent, there is preferable manufacturing.
Five groups of specific implementation modes are provided below according to above-mentioned setting of the invention to illustrate change according to the present invention
Zoom lens.In following five kinds of embodiments, the first lens group 1 of zoom lens includes 4 lens, i.e. positive power lens
Group is made of two panels lens.Second lens group 2 includes 4 lens, i.e. negative-power lenses group is made of two panels lens.Cause
This, the zoom lens of five kinds of embodiments according to the present invention all has 19 eyeglasses, and number is L1-L19 below.
Data in five groups of embodiment data such as the following table 1：
Table 1
Embodiment one：
Figure 1A, 1B and 1C schematically show the structure arrangement of the zoom lens of the first embodiment according to the present invention
Figure.
In the present embodiment, the optics overall length of zoom lens is TTL=129.855mm.
Following table 2 lists the relevant parameter of each lens in the zoom lens of present embodiment：
Table 2
It can be learnt by table 2：
Focal length ft of the camera lens in telescope end：69.89mm
Focal length fw of the camera lens in wide-angle side：8.66mm
Meet conditional (1)：
Ft/fw=8.07
F-number FNOw of the camera lens in wide-angle side：1.9
F-number FNOt of the camera lens in telescope end：2.05
Meet conditional (2)：
FNOw/FNOt=0.92
The image side surface of the last a piece of lens of first lens group of lens telescope end is to the second lens group
The distance dt of the object side of first lens：39.5mm
The image side surface of the last a piece of lens of first lens group of lens wide-angle end is to the second lens group
The distance dw of the object side of first lens：0.56mm
Meet conditional (3)：
(dt-dw)/fw=4.5
The focal length f1 of first lens group：72.217mm
The focal length f2 of second lens group：-14.05mm
Meet conditional (4)：
F1/ | f2 |=5.14
The focal length f3 of the third lens group：38.86mm
The focal length f4 of 4th lens group：37.12mm
Meet conditional (5)：
F3/f4=1.02mm
The focal length f5 of 5th lens group：104.95mm
Meet conditional (6)：
F5/fw=12.12
First lens group 1, has 2 low dispersions, Abbe number to be respectively：
Vd1-2：81.59469 Vd1-4：95.10039；
Second lens group 2, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd2-12：19.31719 Nd2-12：2.00272；
With 1 low dispersion, Abbe number is：
Vd2-14：95.2329；
The third lens group 3, has 3 low dispersions, Abbe number to be respectively：
Vd3-18:90.19492 Vd3-21:67.32662 Vd3-22：70.40577；
4th lens group 4, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd4-29：22.69057 Nd4-29：1.80811；
With 1 low dispersion, Abbe number is：
Vd4-28：95.10039.
Fig. 2A, Fig. 2 B, Fig. 2 C are ball aberration, the multiplying power color of wide-angle side (W) when object distance is infinity in embodiment 1 (S1)
Difference, distortion figure；
Fig. 3 A, Fig. 3 B, Fig. 3 C are the ball aberration of intermediate state (M), multiplying power when object distance is infinity in embodiment 1 (S1)
Aberration, distortion figure；
Fig. 4 A, Fig. 4 B, Fig. 4 C are ball aberration, the multiplying power color of telescope end (T) when object distance is infinity in embodiment 1 (S1)
Difference, distortion figure；
Fig. 5 A, Fig. 5 B, Fig. 5 C are wide-angle sides (W) when object distance is infinity in embodiment 1 (S1), intermediate state (M), hope
The distally near-infrared spherical aberration of (T)；
The zoom lens for meeting above-mentioned condition it can be seen from the figures above, from visible light near infrared wavelength region energy
Enough preferable correction aberrations, it is seen that the spherical aberration in optical range is substantially within ± 0.03mm；Ratio chromatism, is within ± 2.5mm；
Distortion is maintained within ± 0.5%；Spherical aberration is even more within as low as 0.03mm under infrared light.Achievable intermediate state preferably solves picture
Ability, it is seen that wave band meets confocal requirement near infrared band.
Embodiment two：
Fig. 6 A, 6B and 6C schematically show the structure arrangement of the zoom lens of second of embodiment according to the present invention
Figure.
In the present embodiment, the optics overall length of zoom lens is TTL=129.454mm.
Following table 3 lists the relevant parameter of each lens in the zoom lens of present embodiment：
Table 3
It can be learnt by table 3：
Focal length ft of the camera lens in telescope end：73.73mm
Focal length fw of the camera lens in wide-angle side：9.06mm
Meet conditional (1)：
Ft/fw=8.14
F-number FNOw of the camera lens in wide-angle side：1.96
F-number FNOt of the camera lens in telescope end：2.06
Meet conditional (2)：
FNOw/FNOt=0.95
The image side surface of the last a piece of lens of first lens group of lens telescope end is to the second lens group
The distance dt of the object side of first lens：40mm
The image side surface of the last a piece of lens of first lens group of lens wide-angle end is to the second lens group
The distance dw of the object side of first lens：0.7mm
Meet conditional (3)：
(dt-dw)/fw=4.37
The focal length f1 of first lens group：74.27mm
The focal length f2 of second lens group：-15.25mm
Meet conditional (4)：
F1/ | f2 |=4.87
The focal length f3 of the third lens group：36.21mm
The focal length f4 of 4th lens group：42.106mm
Meet conditional (5)：
F3/f4=0.86
The focal length f5 of 5th lens group：-1393.2mm
Meet conditional (6)：
F5/fw=153.78
First lens group 1, has 3 low dispersions, Abbe number to be respectively：
Vd1-2：81.55958 Vd1-4：81.80222 Vd1-6：75.49634；
Second lens group 2, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd2-12：20.70537 Nd2-12：1.93117；
With 2 low dispersions, Abbe number is：
Vd2-10：66.95447 Vd2-14：95.2329；
The third lens group 3, has 2 low dispersions, Abbe number to be respectively：
Vd3-18：95.10039 Vd3-22：76.97551；
4th lens group 4, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd4-29：22.76434 Nd4-29：1.80809；
With 1 low dispersion, Abbe number is：
Vd4-28：95.10039.
Fig. 7 A, Fig. 7 B, Fig. 7 C are ball aberration, the multiplying power color of wide-angle side (W) when object distance is infinity in embodiment 2 (S2)
Difference, distortion figure；
Fig. 8 A, Fig. 8 B, Fig. 8 C are the ball aberration of intermediate state (M), multiplying power when object distance is infinity in embodiment 2 (S2)
Aberration, distortion figure；
Fig. 9 A, Fig. 9 B, Fig. 9 C are ball aberration, the multiplying power color of telescope end (T) when object distance is infinity in embodiment 2 (S2)
Difference, distortion figure；
Figure 10 A, Figure 10 B, Figure 10 C are wide-angle side (W), intermediate state when object distance is infinity in embodiment 2 (S2)
(M), the near-infrared spherical aberration of telescope end (T)；
The zoom lens for meeting above-mentioned condition it can be seen from the figures above, from visible light near infrared wavelength region energy
Enough preferable correction aberrations, it is seen that the spherical aberration in optical range is substantially within ± 0.03mm；Ratio chromatism, telescope end ±
Within 0.1mm, to which the ratio chromatism, rectification effect in telescope end is preferable；Distortion is maintained within ± 0.5%；Ball under infrared light
Difference is substantially within ± 0.02mm.Therefore it can realize that aberration is minimum, the higher resolving power of quality in telescope end.
Embodiment three：
Figure 11 A, 11B and 11C schematically show the structure cloth of the zoom lens of the third embodiment according to the present invention
Set figure.
In the present embodiment, the optics overall length of zoom lens is TTL=132.058mm.
Following table 4 lists the relevant parameter of each lens in the zoom lens of present embodiment：
Table 4
It can be learnt by table 4：
Focal length ft of the camera lens in telescope end：68.8mm
Focal length fw of the camera lens in wide-angle side：8.5mm
Meet conditional (1)：
Ft/fw=8.09
F-number FNOw of the camera lens in wide-angle side：1.82
F-number FNOt of the camera lens in telescope end：1.97
Meet conditional (2)：
FNOw/FNOt=0.92
The image side surface of the last a piece of lens of first lens group of lens telescope end is to the second lens group
The distance dt of the object side of first lens：39mm
The image side surface of the last a piece of lens of first lens group of lens wide-angle end is to the second lens group
The distance dw of the object side of first lens：1.4mm
Meet conditional (3)：
(dt-dw)/fw=4.42
The focal length f1 of first lens group：71.8mm
The focal length f2 of second lens group：-13.97mm
Meet conditional (4)：
F1/ | f2 |=5.14
The focal length f3 of the third lens group：43.3mm
The focal length f4 of 4th lens group：33.3mm
Meet conditional (5)：
F3/f4=1.3
The focal length f5 of 5th lens group：77.945mm
Meet conditional (6)：
F5/fw=9.17
First lens group 1, has 3 low dispersions, Abbe number to be respectively：
Vd1-2：70.44116 Vd1-4：66.05245 Vd1-6：95.2329；
Second lens group 2, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd2-12：21.00001 Nd2-12：2.0052；
With 2 low dispersions, Abbe number is：
Vd2-10：90.19492 Vd2-14：95.2329；
The third lens group 3, has 3 low dispersions, Abbe number to be respectively：
Vd3-18：95.2329 Vd3-19：84.47398 Vd3-22：70.36102；
4th lens group 4, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd4-29：25.38014 Nd4-29：2.00628；
With 1 low dispersion, Abbe number is：
Vd4-28：65.76867.
Figure 12 A, Figure 12 B, Figure 12 C be in embodiment 3 (S3) object distance be infinity when wide-angle side (W) ball aberration, times
Rate aberration, distortion figure；
Figure 13 A, Figure 13 B, Figure 13 C be in embodiment 3 (S3) object distance be infinity when intermediate state (M) ball aberration,
Ratio chromatism, distortion figure；
Figure 14 A, Figure 14 B, Figure 14 C be in embodiment 3 (S3) object distance be infinity when telescope end (T) ball aberration, times
Rate aberration, distortion figure；
Figure 15 A, Figure 15 B, Figure 15 C are wide-angle side (W), intermediate state when object distance is infinity in embodiment 3 (S3)
(M), the near-infrared spherical aberration of telescope end (T).
The zoom lens for meeting above-mentioned condition it can be seen from the figures above, from visible light near infrared wavelength region energy
Enough preferable correction aberrations.Good from machining eyeglass known to sectional view, tolerance is easily guaranteed that, the susceptibility for solving picture drops in eyeglass
It is low.Spherical aberration in visible-range substantially within ± 0.03mm, ratio chromatism, within ± 1.5mm, distortion ± 0.7% with
It is interior；Spherical aberration is within ± 0.03mm under infrared light.Using the component for being easier to processing, the solution picture of poor, the low distortion of low ball is realized
It is required that.
Embodiment four：
Figure 16 A, 16B and 16C schematically show the structure cloth of the zoom lens of the 4th kind of embodiment according to the present invention
Set figure.
In the present embodiment, the optics overall length of zoom lens is TTL=135.791mm.
Following table 5 lists the relevant parameter of each lens in the zoom lens of present embodiment：
Table 5
It can be learnt by table 5：
Focal length ft of the camera lens in telescope end：67.3704mm
Focal length fw of the camera lens in wide-angle side：9.25154mm
Meet conditional (1)：
Ft/fw=7.282
F-number FNOw of the camera lens in wide-angle side：2.0655
F-number FNOt of the camera lens in telescope end：2.02809
Meet conditional (2)：
FNOw/FNOt=1.1018
The image side surface of the last a piece of lens of first lens group of lens telescope end to the second lens group first thoroughly
The distance dt of the object side of mirror：39.05mm
The image side surface of the last a piece of lens of first lens group of lens wide-angle end to the second lens group first thoroughly
The distance dw of the object side of mirror：0.9mm
Meet conditional (3)：
(dt-dw)/fw=4.1236
The focal length f1 of first lens group：75.26mm
The focal length f2 of second lens group：-15.228mm
Meet conditional (4)：
F1/ | f2 |=4.8765
The focal length f3 of the third lens group：35.722mm
The focal length f4 of 4th lens group：42.539mm
Meet conditional (5)：
F3/f4=0.8297
The focal length f5 of 5th lens group：585.965mm
Meet conditional (6)：
F5/fw=63.337
The first group of the camera lens 1, has 3 low dispersions, Abbe number to be respectively：
Vd1-2：81.60838；Vd1-4：95.10039；Vd1-6：66.97239；
The second group of the camera lens 2, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd2-12：21.00001；Nd2-12：2.0052；
With 2 low dispersions, Abbe number is：
Vd2-10：70.44116；Vd2-14：70.44116；
Camera lens third group 3, has 4 low dispersions, Abbe number to be respectively：
Vd3-17：63.87997；Vd3-18：90.19492；Vd3-21：64.59986；
Vd3-22：70.44116；
The 4th group 4 of the camera lens, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd4-29：22.69057；Nd4-29：1.80811；
With 1 low dispersion, Abbe number is：
Vd4-28：95.2329；
Figure 17 A, Figure 17 B, Figure 17 C be in embodiment 4 (S4) object distance be infinity when wide-angle side (W) ball aberration, times
Rate aberration, distortion figure；
Figure 18 A, Figure 18 B, Figure 18 C be in embodiment 4 (S4) object distance be infinity when intermediate state (M) ball aberration,
Ratio chromatism, distortion figure；
Figure 19 A, Figure 19 B, Figure 19 C be in embodiment 4 (S4) object distance be infinity when telescope end (T) ball aberration, times
Rate aberration, distortion figure；
Figure 20 A, Figure 20 B, Figure 20 C are wide-angle side (W), intermediate state when object distance is infinity in embodiment 4 (S4)
(M), the near-infrared spherical aberration of telescope end (T).
The zoom lens for meeting above-mentioned condition it can be seen from the figures above, from visible light near infrared wavelength region energy
Enough preferable correction aberrations.From the eyeglass for including several planar structures known to sectional view, such eyeglass tolerance in terms of core shift is wanted
Ask more loose, the assembling depth of parallelism is also easily guaranteed that, therefore component processing yield can be improved, while the susceptibility for solving picture drops in eyeglass
It is low.Spherical aberration in visible-range substantially within ± 0.08mm, ratio chromatism, within ± 1.5mm, distortion ± 1% with
It is interior；Spherical aberration is within ± 0.06mm under infrared light.Therefore while can realizing looser tolerance, meet higher solution as wanting
It asks.
Embodiment five：
Figure 21 A, 21B and 21C schematically show the structure cloth of the zoom lens of the 5th kind of embodiment according to the present invention
Set figure.
In the present embodiment, the optics overall length of zoom lens is TTL=135mm.
Following table 6 lists the relevant parameter of each lens in the zoom lens of present embodiment：
Table 6
It can be learnt by table 6：
Focal length ft of the camera lens in telescope end：106.472mm
Focal length fw of the camera lens in wide-angle side：8.4mm
Meet conditional (1)：
Ft/fw=12.675
F-number FNOw of the camera lens in wide-angle side：1.89963
F-number FNOt of the camera lens in telescope end：1.89718
Meet conditional (2)：
FNOw/FNOt=1.00129
The image side surface of the last a piece of lens of first lens group of lens telescope end is to the second lens group
The distance dt of the object side of first lens：45.3mm
The image side surface of the last a piece of lens of first lens group of lens wide-angle end is to the second lens group
The distance dw of the object side of first lens：0.3876mm
Meet conditional (3)：
(dt-dw)/fw=5.3467
The focal length f1 of first lens group：74.818884mm
The focal length f2 of second lens group：-13.157196mm
Meet conditional (4)：
F1/ | f2 |=5.6789
The focal length f3 of the third lens group：33.3167mm
The focal length f4 of 4th lens group：55.13926mm
Meet conditional (5)：
F3/f4=0.604
The focal length f5 of 5th lens group：274.496mm
Meet conditional (6)：
F5/fw=32.678
The first group of the camera lens 1, has 3 low dispersions, Abbe number to be respectively：
Vd1-2：94.95349；Vd1-4：81.61031；Vd1-6：68.39867；
The second group of the camera lens 2, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd2-12：21.00001；Nd2-12：2.0052；
With 2 low dispersions, Abbe number is：
Vd2-10：63.485；Vd2-14：64.236；
Camera lens third group 3, has 4 low dispersions, Abbe number to be respectively：
Vd3-17：60.59682；Vd3-18：60.59682；Vd3-21：68.39867；Vd3-22：65.06361；
The 4th group 4 of the camera lens, has 1 high-dispersion glass, Abbe number and refractive index to be respectively：
Vd4-29：23.576；Nd4-29：1.825；
With 1 low dispersion, Abbe number is：
Vd4-28：90.90005；
Figure 22 A, Figure 22 B, Figure 22 C be in embodiment 5 (S5) object distance be infinity when wide-angle side (W) ball aberration, times
Rate aberration, distortion figure；
Figure 23 A, Figure 23 B, Figure 23 C be in embodiment 5 (S5) object distance be infinity when intermediate state (M) ball aberration,
Ratio chromatism, distortion figure；
Figure 24 A, Figure 24 B, Figure 24 C be in embodiment 5 (S5) object distance be infinity when telescope end (T) ball aberration, times
Rate aberration, distortion figure；
Figure 25 A, Figure 25 B, Figure 25 C are wide-angle side (W), intermediate state when object distance is infinity in embodiment 5 (S5)
(M), the near-infrared spherical aberration of telescope end (T).
As can be seen from the above embodiments, the zoom lens for meeting above-mentioned condition, from visible light near infrared wavelength region
Aberration can preferably be corrected.Spherical aberration in visible-range substantially within ± 0.08mm, ratio chromatism, ± 1.5mm with
It is interior, it distorts within ± 1%, and remain pincushion distortion；Spherical aberration is also within ± 0.05mm under infrared light.12 times of left sides can be achieved
Right big multiplying power zoom, and aperture substantially constant is kept, resolving power is higher.
The foregoing is merely the schemes of the present 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, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of zoom lens, including:The first lens group with positive light coke being arranged in order from object side to image side along optical axis
(1), the second lens group (2) with negative power, diaphragm (S), the third lens group (3) with positive light coke, with positive light
4th lens group (4) of focal power and the 5th lens group (5) with negative power；
For the camera lens when from wide-angle side to telescope end zoom, first lens group (1) is fixed, second lens group (2)
Zoom, the third lens group (3) is fixed, the 4th lens group (4) the image planes position compensation, and the 5th lens group (5) is solid
It is fixed；It is characterized in that, along optical axis from object side to image side,
The cemented doublet group and positive light that first lens group (1) is made of negative-power lenses and positive power lens successively
Power lenses group forms；
Second lens group (2) is made of negative-power lenses group, positive power lens and negative-power lenses successively；
Three glue that the third lens group (3) is made of negative-power lenses, positive power lens and negative-power lenses successively
Close the cemented doublet group and positive power lens composition of lens set and positive power lens and negative-power lenses composition；
What the 4th lens group (4) formed by positive power lens and by positive power lens and negative-power lenses successively
Cemented doublet group forms；
5th lens group (5) is made of negative-power lenses and positive power lens successively.
2. zoom lens according to claim 1, which is characterized in that along optical axis from object side to image side, first lens
First lens in group (1) are male-female lens；
First lens in second lens group (2) are male-female lens, last a piece of in second lens group (2)
The object side of lens is concave surface；
First lens in the third lens group (3) are male-female lens；
First lens in 5th lens group (5) are male-female lens.
3. zoom lens according to claim 1 or 2, which is characterized in that focal length ft and institute of the camera lens in telescope end
The focal length fw that camera lens is stated in wide-angle side meets relational expression：7≤ft/fw≤13；
The camera lens meets relational expression with the camera lens in the f-number FNOw of wide-angle side in the f-number FNOt of telescope end：0.7
≤FNOw/FNOt≤1.3。
4. zoom lens according to claim 1 or 2, which is characterized in that along optical axis from object side to image side, described first thoroughly
In microscope group (1) in the image side surface to second lens group (2) of last a piece of lens the object side of first lens distance dt、
In first lens group (1) in the image side surface to second lens group (2) of last a piece of lens first lens object side
The distance d in facewAnd meet relational expression between the wide-angle side focal length fw of the camera lens：4≤(dt-dw)/fw≤6。
5. zoom lens according to claim 1 or 2, which is characterized in that the focal length f1 of first lens group (1) and institute
The absolute value for stating the focal length f2 of the second lens group (2) meets relational expression：4≤f1/|f2|≤6.
6. zoom lens according to claim 1 or 2, which is characterized in that the focal length f3 of the third lens group (3) and institute
The focal length f4 for stating the 4th lens group (4) meets relational expression：0.5≤f3/f4≤1.5.
7. zoom lens according to claim 1 or 2, which is characterized in that the focal length f5 of the 5th lens group (5) and institute
The focal length fw that camera lens is stated in wide-angle side meets relational expression：f5/fw≥8.
8. zoom lens according to claim 1 or 2, which is characterized in that first lens group (1) includes at least two
The Abbe number Vd1 of low dispersion lens, the low dispersion lens meets：65≤Vd1≤100.
9. zoom lens according to claim 1 or 2, which is characterized in that second lens group (2) includes a high color
Glass lens is dissipated, the Abbe number Vd2 and refractive index Nd2 of the high-dispersion glass lens meet：15≤Vd2≤25,1.75≤Nd2
≤2.1；And
The Abbe number Vd3 of at least one low dispersion lens, the low dispersion lens meets：60≤Vd3≤100.
10. zoom lens according to claim 1 or 2, which is characterized in that the third lens group (3) includes at least two
The Abbe number Vd4 of a low dispersion lens, the low dispersion lens meets：65≤Vd4≤100.
11. zoom lens according to claim 1 or 2, which is characterized in that the 4th lens group (4) includes a height
Dispersive glass lens, the Abbe number Vd5 and refractive index Nd5 of the high-dispersion glass lens meet：15≤Vd5≤30,1.75≤
Nd5≤1.95；And
The Abbe number Vd6 of one low dispersion lens, the low dispersion lens meets：60≤Vd6≤100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810927452.2A CN108761749A (en) | 2018-08-15 | 2018-08-15 | Zoom lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810927452.2A CN108761749A (en) | 2018-08-15 | 2018-08-15 | Zoom lens |
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| Publication Number | Publication Date |
|---|---|
| CN108761749A true CN108761749A (en) | 2018-11-06 |
Family
ID=63969994
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810927452.2A Pending CN108761749A (en) | 2018-08-15 | 2018-08-15 | Zoom lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927942A (en) * | 2019-11-29 | 2020-03-27 | 中船重工海为郑州高科技有限公司 | Optical zoom imaging device of photoelectric detection system for foreign objects on airport runway |
| CN112230407A (en) * | 2020-11-03 | 2021-01-15 | 嘉兴中润光学科技股份有限公司 | Large wide-angle camera and 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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| CN201344993Y (en) * | 2008-12-16 | 2009-11-11 | 浙江舜宇光学有限公司 | CCTV camera lens |
| TW201000955A (en) * | 2008-06-20 | 2010-01-01 | Hon Hai Prec Ind Co Ltd | Optical zoom lens |
| JP2016057387A (en) * | 2014-09-08 | 2016-04-21 | キヤノン株式会社 | Zoon lens and imaging device having the same |
| CN208421392U (en) * | 2018-08-15 | 2019-01-22 | 舜宇光学(中山)有限公司 | Zoom lens |
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| JP2007241223A (en) * | 2006-02-10 | 2007-09-20 | Ricoh Co Ltd | Zoom lens, imaging apparatus and personal digital assistant |
| TW201000955A (en) * | 2008-06-20 | 2010-01-01 | Hon Hai Prec Ind Co Ltd | Optical zoom lens |
| CN201344993Y (en) * | 2008-12-16 | 2009-11-11 | 浙江舜宇光学有限公司 | CCTV camera lens |
| JP2016057387A (en) * | 2014-09-08 | 2016-04-21 | キヤノン株式会社 | Zoon lens and imaging device having the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110927942A (en) * | 2019-11-29 | 2020-03-27 | 中船重工海为郑州高科技有限公司 | Optical zoom imaging device of photoelectric detection system for foreign objects on airport runway |
| CN112230407A (en) * | 2020-11-03 | 2021-01-15 | 嘉兴中润光学科技股份有限公司 | Large wide-angle camera and 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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