CN107643591A - A kind of antidamping Penetrating Fog visible light lens and implementation method - Google Patents
A kind of antidamping Penetrating Fog visible light lens and implementation method Download PDFInfo
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- CN107643591A CN107643591A CN201711056326.6A CN201711056326A CN107643591A CN 107643591 A CN107643591 A CN 107643591A CN 201711056326 A CN201711056326 A CN 201711056326A CN 107643591 A CN107643591 A CN 107643591A
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Abstract
The invention discloses a kind of antidamping Penetrating Fog visible light lens and implementation method, in optical system, light is incident from front to back, it is sequentially provided with that focal power is positive first fixed group, focal power is negative zoom group, focal power is negative compensation group, focal power is latter fixed group positive and light cutoff filter group, when video camera is using in the greasy weather, imaging light is near infrared light, so adding 0.76um 0.9um Penetrating Fog optical filters.When video camera on daytime in use, imaging light is visible ray, it is impossible to use 0.76um 0.9um Penetrating Fog optical filters.In 0.76um 0.9um Penetrating Fog optical filter handoff procedures, the position of imaging surface changes, and in order to eliminate, this variation increases compensation light path piece.It is combined by two methods of optics Penetrating Fog and electronics Penetrating Fog, realizes real Penetrating Fog processing, lens design is general simple, and electron process employs state-of-the-art Penetrating Fog algorithm, has and preferably popularizes type.
Description
Technical field
The invention belongs to field of photoelectric technology, and in particular to a kind of antidamping Penetrating Fog visible light lens and implementation method, can
Picture rich in detail is obtained in the case where there is foggy environment.
Background technology
With the worsening of surroundings, under haze weather, the video monitoring system based on common lens is supervised
The picture contrast step-down controlled, color is dimmed, and image attenuation is serious, have impact on the observation effect to target, can not be effectively right
Observation is identified in target detail.
The development of video monitoring camera is not only required in observation effect under good environment " seeing clearly ", " looking far ".More
It is required that there is equal detectivity and definition under haze environment.Conventional Penetrating Fog method has two kinds：One kind is optical frames
Head Penetrating Fog design, is exactly to utilize near infrared ray（0.76 μm -1.1 μm of wavelength）The principle of diffraction molecule, it is clear to lift picture
Clear degree.One kind is image procossing Penetrating Fog technology, mainly carries out quality improvement to the image collected by various algorithms.With reference to
Two methods, real Penetrating Fog could be realized, and how efficiently to lift remote observation Penetrating Fog quality in telephoto lens is its pass
Key.
The content of the invention
The present invention provide it is a kind of be conveniently adjusted, antidamping Penetrating Fog visible light lens simple in construction, under haze weather, lead to
Optical texture is crossed, prevents attenuated optical signal, relative aperture is increased and reduces the curvature of field, illuminance of image plane increase, make image more clear
It is clear, lift telephoto lens remote observation Penetrating Fog quality.
Another object of the present invention provides the implementation method of the antidamping Penetrating Fog visible light lens, and light is being carried out to camera lens
After learning Penetrating Fog adjustment, then electronics Penetrating Fog adjustment is carried out to image, realize real Penetrating Fog.
To achieve the above object, the technical solution adopted by the present invention：A kind of antidamping Penetrating Fog visible light lens, its feature exist
In：In the optical system of the antidamping Penetrating Fog visible light lens, light is incident from front to back, is sequentially provided with focal power as before positive
Fixed group, focal power are negative zoom group, focal power is negative compensation group, focal power is latter fixed group positive and light cutoff filter
Group；Fixed group includes setting gradually from front to back before described the first negative lens, the first positive lens, the second negative lens, second are just
Lens, wherein the first negative lens and the first positive lens are glued together；The zoom group includes the set gradually from front to back
One meniscus lens, the first biconcave lens, the first biconvex lens and the second biconcave lens.Wherein the first biconvex lens and the second concave-concave
Lens are glued together；The compensation group includes setting gradually from front to back for the 3rd positive lens, the 3rd negative lens, the 4th just saturating
Mirror and the 5th positive lens, wherein the 3rd negative lens and the 4th positive lens are glued together；Fixed group is included from front to back after described
The 3rd biconcave lens, the second biconvex lens, the second crescent moon lens, the 3rd crescent moon lens and the 3rd biconvex lens set gradually,
Wherein the 3rd biconcave lens and the second biconvex lens are glued together, and the 3rd crescent moon lens and the 3rd biconvex lens are glued at one
Rise；The light cutoff filter group includes setting gradually from up to down as near infrared prevention optical filter and compensation light path piece；It is solid before described
It is 4mm~138.7mm to determine the airspace between group and zoom group, and the airspace between compensation group and rear fixed group is
62.99mm~11.25mm, and diaphragm is provided with, airspace is 30mm between rear fixed group and light cutoff filter group；The zoom group
Moved forward and backward along optical axis, compensation group moves forward and backward along optical axis, and zoom group and the compensation group direction of motion are on the contrary, the near infrared prevention
Optical filter and compensation light path piece are respectively arranged with optical filter mobile device and limit switch, and light cutoff filter group is along vertical optical axis direction
Move up and down, compensation light path piece is moved into light path when being used on daytime, moved near infrared filter when greasy weather use
In light path.
Airspace before described between first negative lens glued in fixed group, the first positive lens and the second negative lens is
4mm, the airspace between the second negative lens and the second positive lens are 4.3mm, the first meniscus lens and in the zoom group
Airspace between one biconcave lens is that 2.6mm, the first biconcave lens and the first biconvex lens and the second biconcave lens are glued
In lens, the airspace between the first biconvex lens is 2.6mm, in the compensation group the 3rd positive lens and the 3rd negative lens and
Airspace in 4th positive lens balsaming lens between the 3rd negative lens is 0.35mm, the in the 5th positive lens and balsaming lens
Airspace between four positive lens is 0.3mm, and the biconcave lens of balsaming lens the 3rd, the second biconvex lens in group are fixed after described
Light bar is above set, the airspace in balsaming lens between the second biconvex lens and the second crescent moon lens is 13.9mm, second
Airspace in crescent moon lens and the crescent moon lens of balsaming lens the 3rd and the 3rd biconvex lens between the 3rd crescent moon lens is
1.58mm。
The near infrared prevention optical filter is 0.76um-0.9um Penetrating Fog optical filters.
In order to solve under foggy environment, the requirement of long focus video camera remote monitor target is saturating from optics Penetrating Fog and electronics
The aspect of mist two carries out following image procossing：
Wherein, in terms of optics Penetrating Fog, to meet the requirement of high-definition camera resolution ratio, according to the mathematical modeling of greasy weather illuminance of image plane
Camera lens is designed, mathematical modeling is：
In formulaFor the aperture function of sky, d is target range, from ED optical material, makes its internal transmitance
More than 98%；Camera lens is set to be imaged in wide spectral range；0.76-0.9 μm of Penetrating Fog optical filter of wavelength is selected to carry out aberration school
Just, camera lens is made to form high-resolution near infrared band；
The evaluation of aberration improves the knot image force of object lens according to the characteristic of greasy weather target contrast, and the MTF of low frequency part is more than
90%, intermediate-frequency section MTF are more than 80%, and HFS MTF is more than 30%, realizes that greasy weather image quality is excellent, meanwhile, in order to full
The requirement of sufficient imaging on daytime, aberration correction has been carried out to F light D light C light.
Ultra-wideband antireflective film is coated with optical element, the transmitance of 0.47um-0.9um wavelength bands is lifted, prevents light
Signal attenuation, increase relative aperture and reduce the curvature of field, illuminance of image plane increase, become apparent from image, fix group in the past
Focal length F1 ＇ focal lengths are 174.39mm, and zoom ratio g is for zoom system, pancreatic system：
In formulaFor the enlargement ratio before the change of zoom group and after change；The focal length of zoom group be F2 ＇=-
16.94mm；Focal length F3 ＇=41.39mm of compensation group；
In Optical System Design, illuminance of image plane is：
T0 in formula（d）For greasy weather atmospheric transmittance, B（λ）For the spectral response coefficient of electrooptical device.
In terms of electronics Penetrating Fog, picture signal processing is carried out on the main video frequency processing chip of video camera, is adjusted and schemed using algorithm
As quality；
Picture signal is gathered first, and photoelectric signal transformation is carried out to vision signal, by 3A algorithms and control circuit to automatic
Exposure（Auto Exposure）, automatic focus on（Auto Focus）And AWB（Auto White Balance）Between not
It is disconnected to carry out statistics evaluation and test, gather numerical information；
Then extract the image histogram information collected, according to histogram variation tendency, judge histogram distribution situation and
Environment haze concentration levels, image intensity value is adjusted using algorithm of histogram equalization；
Overall Penetrating Fog adjustment finally is carried out to image with He Shi dark defogging algorithms, by mist figure into model：
I in formula（x）For image before Penetrating Fog, J（x）For image after Penetrating Fog, T（x）For transmissivity, A is atmosphere light composition；Carry out image
Recovery is handled, and it is as follows that image recovers formula：
After image recovery processing, output image is shown.
Beneficial effect of the present invention：The invention provides a kind of design of telephoto lens antidamping fog penetration lens and implementation method.
It is combined by two methods of optics Penetrating Fog and electronics Penetrating Fog, realizes real Penetrating Fog processing, lens design is general simple, electricity
Subprocessing employs state-of-the-art Penetrating Fog algorithm, has and preferably popularizes type.
Ultra-wideband antireflective film is coated with optical element, the transmitance of 0.47um-0.9um wavelength bands is lifted, prevents light
Signal attenuation；Light path system increase disappears veiling glare light bar；Veiling glare is reduced during the Calculation of Optical Path to enter imaging optical path and reduce vignetting.
When video camera in the greasy weather in use, imaging light is near infrared light, so adding 0.76um-0.9um Penetrating Fog optical filters.
When video camera on daytime in use, imaging light is visible ray, it is impossible to use 0.76um-0.9um Penetrating Fog optical filters.
In 0.76um-0.9um Penetrating Fog optical filter handoff procedures, the position of imaging surface changes.In order to eliminate this variation increases
Compensate light path piece.
With CCD or CMOS, the raising of technique production technique, pixel size can accomplish several microns, and this requires mirror
Head resolution ratio is high, i.e., should be greater than 0.3 in the MTF of HFS.The present invention in Optical System Design illuminance of image plane be：
The contrast of the relatively low target imaging of brightness can be so improved, reduces picture signal processing load.
Brief description of the drawings
Fig. 1 is home state optical system diagram；
Fig. 2 is short focus state optical system diagram；
Fig. 3 is mid-focal length state optical system diagram；
Fig. 4 is long-focus state optical system diagram；
Fig. 5 is home pattern MTF curve figure；
Fig. 6 is Penetrating Fog environmental pattern MTF curve figure；
Fig. 7 is image processing data flow chart.
Embodiment
A kind of antidamping Penetrating Fog visible light lens as described in Fig. 1-4, the optical system of the antidamping Penetrating Fog visible light lens
In system, light is incident from front to back, and it is that A is organized in positive preceding fixation, focal power is negative zoom group B, light focus to be sequentially provided with focal power
It is positive rear fixed group D and light cutoff filter group E to spend for negative compensation group C, focal power；Fixed group A is included from front to back before described
The first negative lens A-1, the first positive lens A-2, the second negative lens A-3, the second positive lens A-4 set gradually, wherein first is negative
Lens A-1 and the first positive lens A-2 are glued together；The first bent moon that the zoom group B includes setting gradually from front to back is saturating
Mirror B-1, the first biconcave lens B-2, the first biconvex lens B-3 and the second biconcave lens B-4.Wherein the first biconvex lens B-3 and
Second biconcave lens B-4 is glued together；The compensation group C includes setting gradually from front to back as the 3rd positive lens C-1, the 3rd
Negative lens C-2, the 4th positive lens C-3 and the 5th positive lens C-4.Wherein the 3rd negative lens C-2 and the 4th positive lens C-3 are glued at
Together；Fixed group D includes setting gradually from front to back after described the 3rd biconcave lens D-1, the second biconvex lens D-2, second
Crescent moon lens D-3, the 3rd crescent moon lens D-4 and the 3rd biconvex lens D-5, wherein the 3rd biconcave lens D-1 and the second lenticular
Mirror D-2 is glued together, and the 3rd crescent moon lens D-4 and the 3rd biconvex lens D-5 are glued together；The light cutoff filter group E bags
Include and set gradually from up to down as near infrared prevention optical filter E-1 and compensation light path piece E-2；Fixed group A and zoom group B before described
Between airspace be 4mm~138.7mm, the airspace between compensation group C and rear fixed group D for 62.99mm~
11.25mm, and diaphragm F is provided with, airspace is 30mm between rear fixed group D and light cutoff filter group；The zoom group B is along optical axis
Move forward and backward, compensation group C moves forward and backward along optical axis, and zoom group B and the compensation group C directions of motion are on the contrary, the near infrared prevention is filtered
Mating plate E-1 and compensation light path piece E-2 are respectively arranged with optical filter mobile device and limit switch, and light cutoff filter group is along vertical optical axis
Direction moves up and down, and moves into compensation light path piece E-2 in light path when being used on daytime, when using in the greasy weather by near infrared filter
Piece E-1 is moved into light path.
Before described between the first negative lens A-1, the first positive lens A-2 and the second negative lens A-3 glued in fixed group A
Airspace is 4mm, and the airspace between the second negative lens A-3 and the second positive lens A-4 is 4.3mm, in the zoom group B
Airspace between first meniscus lens B-1 and the first biconcave lens B-2 is 2.6mm, the first biconcave lens B-2 and first pair
In convex lens B-3 and the second biconcave lens B-4 balsaming lens, the airspace between the first biconvex lens B-3 is 2.6mm, institute
State in compensation group C the 3rd negative lens C-2 in the 3rd positive lens C-1 and the 3rd negative lens C-2 and the 4th positive lens C-3 balsaming lens
Between airspace be 0.35mm, the airspace in the 5th positive lens C-4 and balsaming lens between the 4th positive lens C-3 is
0.3mm, light bar is set before the biconcave lens D-1 of balsaming lens the 3rd, the second biconvex lens D-2 in fixed group after described, it is glued
Airspace in lens between the second biconvex lens D-2 and the second crescent moon lens D-3 is 13.9mm, the second crescent moon lens D-3
Airspace between the 3rd crescent moon lens D-4 in the crescent moon lens D-4 of balsaming lens the 3rd and the 3rd biconvex lens D-5 is
1.58mm。
The near infrared prevention optical filter is 0.76um-0.9um Penetrating Fog optical filters.
The zoom group B moves forward and backward along optical axis in this embodiment, and compensation group C moves forward and backward along optical axis.Zoom group B and benefit
It is opposite to repay group C directions of motion.It is configured with optical filter mobile device and limit switch, light cutoff filter group is along above and below vertical optical axis direction
Motion.Compensation light path piece E-2 is moved into light path when being used on daytime, moved near infrared filter E-1 when greasy weather use
Enter in light path.
The implementation method of the antidamping Penetrating Fog visible light lens, in order to solve under foggy environment, long focus video camera is remote
The requirement of monitoring objective, image procossing is carried out in terms of optics Penetrating Fog and electronics Penetrating Fog two：
Wherein, in terms of optics Penetrating Fog, to meet the requirement of high-definition camera resolution ratio, according to the mathematical modeling of greasy weather illuminance of image plane
Camera lens is designed, mathematical modeling is：
In formulaFor the aperture function of sky, d is target range, from ED optical material, makes its internal transmitance
More than 98%；Camera lens is set to be imaged in wide spectral range；0.76-0.9 μm of Penetrating Fog optical filter of wavelength is selected to carry out aberration school
Just, camera lens is made to form high-resolution near infrared band；
The evaluation of aberration improves the knot image force of object lens according to the characteristic of greasy weather target contrast, and the MTF of low frequency part is more than
90%, intermediate-frequency section MTF are more than 80%, and HFS MTF is more than 30%, realizes that greasy weather image quality is excellent, meanwhile, in order to full
The requirement of sufficient imaging on daytime, aberration correction has been carried out to F light D light C light.
Ultra-wideband antireflective film is coated with optical element, the transmitance of 0.47um-0.9um wavelength bands is lifted, prevents light
Signal attenuation, increase relative aperture and reduce the curvature of field, illuminance of image plane increase, become apparent from image, fix group in the past
Focal length F1 ＇ focal lengths are 174.39mm, and zoom ratio g is for zoom system, pancreatic system：
In formulaFor the enlargement ratio before the change of zoom group and after change；The focal length of zoom group be F2 ＇=-
16.94mm；Focal length F3 ＇=41.39mm of compensation group；
In Optical System Design, illuminance of image plane is：
T0 in formula（d）For greasy weather atmospheric transmittance, B（λ）For the spectral response coefficient of electrooptical device.
Such as Fig. 7, electronics Penetrating Fog aspect, picture signal processing is carried out on the main video frequency processing chip of video camera, utilizes algorithm
Adjust picture quality；
Vision signal opto-electronic conversion is carried out first, by 3A algorithms and control circuit to automatic exposure（Auto Exposure）, from
It is dynamic to focus on（Auto Focus）And AWB（Auto White Balance）It is uninterrupted to carry out statistics evaluation and test, gather numerical value
Information.
Then the image histogram information collected is extracted, according to histogram variation tendency, judges histogram distribution situation
And environment haze concentration levels, mainly adjust image intensity value using algorithm of histogram equalization；
Overall Penetrating Fog adjustment finally is carried out to image with He Shi dark defogging algorithms, by mist figure into model：
I in formula（x）For image before Penetrating Fog, J（x）For image after Penetrating Fog, T（x）For transmissivity, A is atmosphere light composition；Carry out image
Recovery is handled, and it is as follows that image recovers formula：
The optical system being made up of above-mentioned eyeglass reaches following optical index：
1st, focal length：F '=85mm~850mm
2nd, zoom ratio:10X
3rd, maximum relative aperture:D/F=1/6
4th, maximum field of view angle：2W=0.6 °~6 °
5th, Penetrating Fog optical filter passes through spectrum：0.76um-0.9um
In this embodiment, image by camera lens enter sensor carry out opto-electronic conversion, 3A calculate and control circuit to 3A information not
Interruption carries out statistics evaluation and test.Histogram equalization algorithm carries out histogram distribution calculating to image, and gradation of image is adjusted.Adjust
Image after whole, can output image after processing again by He Shi dark defogging algorithm process.Pass through Fig. 5 home patterns
MTF curve figure and the control of Fig. 6 Penetrating Fog environmental patterns MTF curve figure there are not mist environment as can be seen that greasy weather lens imaging effect is close
Image quality, realize the processing of real Penetrating Fog.
Claims (4)
- A kind of 1. antidamping Penetrating Fog visible light lens, it is characterised in that：In the optical system of the antidamping Penetrating Fog visible light lens, Light is incident from front to back, is sequentially provided with that focal power is positive first fixed group, focal power is negative zoom group, focal power is negative Compensation group, focal power are positive latter fixed group and light cutoff filter group；Fixed group includes setting gradually from front to back before described the One negative lens, the first positive lens, the second negative lens, the second positive lens, wherein the first negative lens and the first positive lens are glued at one Rise；The zoom group includes the first meniscus lens, the first biconcave lens, the first biconvex lens and the set gradually from front to back Two biconcave lens, wherein the first biconvex lens and the second biconcave lens are glued together；The compensation group include from front to back according to It is secondary to be arranged to the 3rd positive lens, the 3rd negative lens, the 4th positive lens and the 5th positive lens, wherein the 3rd negative lens and the 4th just saturating Mirror is glued together；Fixed group includes setting gradually from front to back after described the 3rd biconcave lens, the second biconvex lens, second Crescent moon lens, the 3rd crescent moon lens and the 3rd biconvex lens, wherein the 3rd biconcave lens and the second biconvex lens are glued together, 3rd crescent moon lens and the 3rd biconvex lens are glued together；The light cutoff filter group includes setting gradually from up to down to be near red Outer edge filter and compensation light path piece；Airspace before described between fixed group and zoom group is 4mm~138.7mm, is mended The airspace repaid between group and rear fixed group is 62.99mm~11.25mm, and is provided with diaphragm, rear fixed group and light cutoff filter Airspace is 30mm between group；The zoom group moves forward and backward along optical axis, and compensation group moves forward and backward along optical axis, zoom group and benefit Group direction of motion is repaid on the contrary, the near infrared prevention optical filter and compensation light path piece are respectively arranged with optical filter mobile device and limit Bit switch, light cutoff filter group move up and down along vertical optical axis direction, move into compensation light path piece in light path when being used on daytime, Near infrared filter is moved into light path when using in the greasy weather.
- 2. antidamping Penetrating Fog visible light lens as claimed in claim 1, it is characterised in that：Before described glued the in fixed group Airspace between one negative lens, the first positive lens and the second negative lens is 4mm, between the second negative lens and the second positive lens Airspace be 4.3mm, the airspace in the zoom group between the first meniscus lens and the first biconcave lens is In 2.6mm, the first biconcave lens and the first biconvex lens and the second biconcave lens balsaming lens, the sky between the first biconvex lens Gas is at intervals of 2.6mm, the 3rd positive lens and the in the 3rd negative lens and the 4th positive lens balsaming lens the 3rd negative in the compensation group Airspace between lens is 0.35mm, and the airspace in the 5th positive lens and balsaming lens between the 4th positive lens is 0.3mm, the biconcave lens of balsaming lens the 3rd in fixed group after described, light bar is set before the second biconvex lens, in balsaming lens Airspace between second biconvex lens and the second crescent moon lens is 13.9mm, the second crescent moon lens and balsaming lens March Airspace in tooth lens and the 3rd biconvex lens between the 3rd crescent moon lens is 1.58mm.
- 3. antidamping Penetrating Fog visible light lens as claimed in claim 1, it is characterised in that：The near infrared prevention optical filter is 0.76um-0.9um Penetrating Fog optical filters.
- 4. the implementation method of antidamping Penetrating Fog visible light lens as claimed in claim 1, in order to solve under foggy environment, focal length The requirement of video camera remote monitor target, it is characterised in that carried out in terms of optics Penetrating Fog and electronics Penetrating Fog two at below figure picture Reason：Wherein, in terms of optics Penetrating Fog, to meet the requirement of high-definition camera resolution ratio, according to the mathematical modeling of greasy weather illuminance of image plane Camera lens is designed, mathematical modeling is：In formulaFor the aperture function of sky, d is target range, from ED optical material, makes its internal transmitance More than 98%；Camera lens is set to be imaged in wide spectral range；0.76-0.9 μm of Penetrating Fog optical filter of wavelength is selected to carry out aberration school Just, camera lens is made to form high-resolution near infrared band；The evaluation of aberration improves the knot image force of object lens according to the characteristic of greasy weather target contrast, and the MTF of low frequency part is more than 90%, intermediate-frequency section MTF are more than 80%, and HFS MTF is more than 30%, realizes that greasy weather image quality is excellent, meanwhile, in order to full The requirement of sufficient imaging on daytime, aberration correction has been carried out to F light D light C light,Ultra-wideband antireflective film is coated with optical element, the transmitance of 0.47um-0.9um wavelength bands is lifted, prevents optical signal Decay, increase relative aperture and reduce the curvature of field, illuminance of image plane increase, become apparent from image, fix the focal length of group in the past F1 ＇ focal lengths are 174.39mm, and zoom ratio g is for zoom system, pancreatic system：In formulaFor the enlargement ratio before the change of zoom group and after change；The focal length of zoom group be F2 ＇=- 16.94mm；Focal length F3 ＇=41.39mm of compensation group；In Optical System Design, illuminance of image plane is：T0 in formula（d）For greasy weather atmospheric transmittance, B（λ）For the spectral response coefficient of electrooptical device,In terms of electronics Penetrating Fog, picture signal processing is carried out on the main video frequency processing chip of video camera, image matter is adjusted using algorithm Amount；Picture signal is gathered first, and photoelectric signal transformation is carried out to vision signal, by 3A algorithms and control circuit to automatic Exposure（Auto Exposure）, automatic focus on（Auto Focus）And AWB（Auto White Balance）Between not It is disconnected to carry out statistics evaluation and test, gather numerical information；Then extract the image histogram information collected, according to histogram variation tendency, judge histogram distribution situation and Environment haze concentration levels, image intensity value is adjusted using algorithm of histogram equalization；Overall Penetrating Fog adjustment finally is carried out to image with He Shi dark defogging algorithms, by mist figure into model：I in formula（x）For image before Penetrating Fog, J（x）For image after Penetrating Fog, T（x）For transmissivity, A is atmosphere light composition；Carry out image Recovery is handled, and it is as follows that image recovers formula：After image recovery processing, output image is shown.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109831619A (en) * | 2018-12-24 | 2019-05-31 | 天津天地伟业信息系统集成有限公司 | A method of it is focused automatically after switching optical filter under camera motion state |
| CN111538145A (en) * | 2020-05-12 | 2020-08-14 | Oppo广东移动通信有限公司 | Zoom lens, camera module and electronic device |
| CN112230406A (en) * | 2020-11-04 | 2021-01-15 | 福建福光股份有限公司 | Near-infrared high-definition zooming optical system with strong fog penetration capability |
| CN113589502A (en) * | 2021-07-05 | 2021-11-02 | 湖北华中光电科技有限公司 | Large-visual-field visible light and near-infrared light common-path zooming imaging system |
| CN116165782A (en) * | 2022-12-25 | 2023-05-26 | 福建福光股份有限公司 | 30 times Gao Qingchang focus continuous zoom lens with fog penetrating function |
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