CN114137781A - Cross-medium imaging multifunctional optical system and control method - Google Patents
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- 238000001514 detection method Methods 0.000 claims abstract description 52
- 230000005499 meniscus Effects 0.000 claims description 12
- 238000010226 confocal imaging Methods 0.000 claims description 4
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
- G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
Abstract
The invention discloses a multi-functional optical system for cross-medium imaging and a control method, wherein the multi-functional optical system comprises a pressure-resistant protection window, a multi-channel shared lens group and a beam splitter group which are sequentially arranged from an object side to an image side along a light direction, the light is divided into two beams of light from the beam splitter group, a first beam of light is sequentially provided with a rear fixed lens group shared by underwater imaging and water surface imaging and a water surface imaging switching lens group, and the water surface imaging switching lens group can be cut in and cut out from the first beam of light; and the second beam of light is provided with an underwater empty laser detection rear fixed lens group. The underwater air imaging, the underwater air laser detection and the water surface imaging function are integrated into a whole by utilizing the beam lens group and the water surface imaging switching lens group, the underwater air imaging and laser detection vacancy of the underwater vehicle are filled, the detection blind area of the traditional photoelectric equipment carried by the underwater vehicle is made up, and the detection performance of the underwater vehicle is remarkably improved.
Description
Technical Field
The invention relates to the technical field of optics, in particular to a cross-medium imaging multifunctional optical system and a control method.
Background
Foreign underwater aerial imaging technology has been studied for over 20 years, and the U.S. has been the most advanced and intensive research on this project. The research and development work of the underwater air imaging technology is started by the Aret Association company in California in the early 90 th century, the Aret Association company makes striding progress and excellent results of the underwater air imaging technology, related patents of the underwater air imaging technology are applied, and meanwhile, a first set of underwater air imaging system which can be successfully and practically applied to underwater vehicle photoelectric detection is creatively developed by applying the technology. Related research has also been carried out by Carl Zeiss in germany, which develops a system principle consistent with the underwater aerial imaging system of Aret associates, all being vertically-upward imaging systems with a field of view covering the Snell window, but Carl Zeiss uses a camera with higher resolution in view of the compression problem of the Snell window on water surface targets. At present, domestic researches on underwater imaging (water-water medium) systems are more, underwater imaging devices based on a laser distance gating technology, an underwater polarization imaging technology, a sound wave technology and the like are already developed, underwater air-to-air and sea-crossing water medium multifunctional imaging systems are rarely researched, and a mature underwater air-to-air imaging system which can be applied to photoelectric detection of a submarine aircraft is not developed.
Disclosure of Invention
Aiming at the defects in the prior art, the system integrates the functions of underwater aerial imaging, underwater aerial laser detection and water surface imaging, and obviously improves the detection performance of the underwater vehicle.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a multi-functional optical system for cross-media imaging, comprising: the system comprises a pressure-resistant protection window G1, a multi-channel shared lens group G2 and a beam splitter group G3 which are sequentially arranged from an object side to an image side along the light direction, wherein the light is divided into two beams of light from the beam splitter group, the first beam of light is sequentially provided with a rear fixed lens group G4 shared by underwater imaging and water surface imaging and a water surface imaging switching lens group G5, and the water surface imaging switching lens group can be cut in and cut out from the first beam of light; and the second beam of light is provided with an underwater empty laser detection rear fixed lens group G6.
According to the technical scheme, the first beam of light and the original light before beam splitting are located on the same straight line, and the second beam of light is perpendicular to the original light before beam splitting.
According to the technical scheme, the voltage-resistant protection window G1 comprises a spherical meniscus concentric lens; the multichannel shared lens group G2 is composed of a plurality of lenses, the first lens is arranged in a spherical inner cavity of the pressure-resistant protection window, the rest lenses are arranged between the pressure-resistant protection window G1 and the beam splitter group G3, and one lens moving back and forth along the optical axis direction exists in the rest lenses; the beam splitter group G3 includes a beam splitter; the rear fixed lens group G4 shared by underwater imaging and water surface imaging comprises a plurality of rear group lenses;
the water surface imaging switching lens group G5 comprises a switching mirror; the underwater space laser detection rear fixed lens group G6 comprises a laser reflector and a plurality of rear lens groups, and the included angle between the normal of the laser reflector and the second beam of light is 45 degrees.
According to the technical scheme, the multi-channel shared lens group G2 is composed of four lenses, the first lens is located in a spherical inner cavity of the pressure-resistant protection window, the rest lenses are arranged between the pressure-resistant protection window G1 and the beam splitter group G3, and the second lens can move back and forth along the optical axis direction.
According to the technical scheme, the underwater space laser detection rear fixed lens group G6 comprises two laser rear group lenses, and is divided into a double convex lens and a meniscus lens, wherein the double convex lens is positioned at the front light of the laser reflector, the meniscus lens is positioned at the rear light of the laser reflector, the two laser lenses are both positive focal power, and at least one of four surfaces in the two lenses is an aspheric surface.
According to the technical scheme, the beam splitter group (G3) comprises a beam splitter, the beam splitter divides the original light beam into two beams of light, and the spectral energy ratio range of the first beam of light to the second beam of light is 1: 9-5: 5.
According to the technical scheme, the spectral energy ratio of the first beam of light to the second beam of light is 2: 8.
A method of controlling a multi-function optical system for imaging across media as recited in any one of claims 1-7, wherein: the method comprises the following steps: the medium is judged, and confocal imaging of the underwater air imaging channel and the water outlet air imaging channel is realized by adjusting the water surface imaging switching lens group (G5); step two: and adjusting the lenses which can move back and forth along the light rays in the multi-channel shared lens group G2 to correct the imaging of the system.
According to the above technical scheme, in the step one, the system comprises
An underwater air imaging channel is formed by a pressure protection window G1, a multi-channel shared lens group G2, a beam splitter group G3 and an underwater imaging and water surface imaging shared rear fixed lens group G4, the working wave band is 400 nm-700 nm, the F # is 1.2, and the imaging view field is a 180-degree hemispherical area view field; an effluent air-to-air imaging channel is formed by a pressure protection window G1, a multi-channel shared lens group G2, a beam splitter group G3, an underwater imaging and water surface imaging shared rear fixed lens group G4 and a water surface imaging switching lens group G5, the working waveband is 480 nm-580 nm, and the detection field of view is not less than the zenith area +/-30 degrees; the underwater air laser detection channel is formed by a pressure protection window G1, a multi-channel shared lens group G2, a beam splitter group G3 and an underwater air laser detection rear fixed lens group G6, the working wave band is 400 nm-700 nm, and the detection field of view is not smaller than the zenith area +/-50 degrees of field of view.
According to the technical scheme, in the first step, when the optical system performs underwater aerial imaging, the water surface imaging switching lens group G5 cuts out a light path; when the optical system is empty imaging after water is discharged, the water surface imaging switching lens group G5 cuts into the light path.
The invention has the following beneficial effects:
1. incident light is divided into two beams through the beam splitting lens group, an imaging channel (comprising an underwater empty imaging channel and a water outlet empty imaging channel) is arranged on a first beam of light, the imaging channels under the two modes share a part of lens assembly (an underwater imaging and water surface imaging share a rear fixed lens assembly), a water surface imaging switching lens group is arranged behind the shared lens assembly, and the water surface imaging switching lens group is used for cutting in and cutting out the first beam of light to realize confocal imaging of the imaging channels under the two modes. And after the underwater air laser detection, the fixed lens group is arranged on the second beam of light to form a laser detection channel, so that the function of the underwater air laser detection is realized. The beam splitter group and the water surface imaging switching lens group are utilized to integrate underwater air imaging, underwater air laser detection and water surface imaging functions, the underwater air imaging and laser detection vacancy of the underwater vehicle are filled, the detection blind area of the traditional photoelectric equipment carried by the underwater vehicle is made up, and the detection performance of the underwater vehicle is remarkably improved.
2. The second lens in the multi-channel common lens group moves back and forth along the optical axis direction, and can be used for compensating a part of water body disturbance defocusing effect when an optical system works underwater (underwater aerial imaging and underwater aerial laser detection); when the optical system works on water after water flows out (water-out to-air imaging), the long-distance and short-distance imaging focusing function can be realized.
3. After the underwater space laser detection, the biconvex lens and the meniscus lens in the fixed lens group are both with positive focal power, and at least one of four surfaces in the two lenses is an aspheric surface; the optical path of the light beam is shortened, and aberration is corrected, so that light spots focused on the target surface of the detector by the laser detection light beam are uniform and round.
Drawings
FIG. 1 is a schematic diagram of an optical system according to an embodiment of the present invention;
in the figure, G1, withstand voltage protection window; g2, a multi-channel shared lens group; g3, a beam splitter group; g4, sharing a rear fixed lens group for underwater imaging and water surface imaging; g5, a water surface imaging switching lens group; g6, fixing the lens group after underwater air laser detection; l11, spherical meniscus concentric lens; l21, first lens; l22, second lens; L23-L24, lens; l31, beam splitter; L41-L43, rear group lens; l51, switching mirror; l61, biconvex lens; l62, laser mirror; l63, meniscus lens.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, the multi-functional optical system for cross-media imaging provided by the present invention includes a voltage-resistant protection window G1, a multi-channel shared lens group G2, and a beam splitter group G3 sequentially arranged from an object side to an image side along a light direction, wherein the light is divided into two rigid light beams from the beam splitter group, a first light beam is sequentially provided with a rear fixed lens group G4 shared by underwater imaging and water imaging, and a water surface imaging switching lens group G5, and the water surface imaging switching lens group can be cut in and cut out from the first light beam; and the second beam of light is provided with an underwater empty laser detection rear fixed lens group G6. In the embodiment, incident light is divided into two beams by a beam splitter group G3, an imaging channel (comprising an underwater empty imaging channel and a water outlet empty imaging channel) is arranged on the first beam, the imaging channels in the two modes share a part of lens assembly (sharing a rear fixed lens assembly for underwater imaging and water surface imaging), a water surface imaging switching lens group is arranged behind the shared lens assembly, and the first beam is cut in and out by the water surface imaging switching lens group to realize confocal imaging of the imaging channels in the two modes; and an underwater empty laser detection rear fixed lens group G6 is arranged on the second beam of light to form a laser detection system. By utilizing the beam splitter group G3 and the water surface imaging switching lens group G5, functions of underwater aerial imaging, underwater aerial laser detection and water surface imaging are integrated, the vacancy of underwater aerial imaging and laser detection of the underwater vehicle is filled, the detection blind area of the traditional photoelectric equipment carried by the underwater vehicle is made up, and the detection performance of the underwater vehicle is obviously improved.
In some embodiments, the first beam of light is aligned with the original light before splitting, and the second beam of light is perpendicular to the original light before splitting.
In some of the embodiments described above, the pressure protection window G1 includes a spherical meniscus concentric lens L11; which is part of the optical system and participates in the aberration balance correction of the optical system. The multi-channel common lens group G2 is composed of a plurality of lenses, a first lens L21 is arranged in a spherical inner cavity of the voltage-resistant protection window, the rest lenses are arranged between the voltage-resistant protection window G1 and the beam splitting lens group G3, and a lens moving back and forth along the optical axis direction exists in the rest lenses. The beam splitter group G3 includes a beam splitter L31 for splitting a light beam into two light beams. The rear fixed lens group G4 shared by underwater imaging and water surface imaging comprises a plurality of rear group lenses, and the embodiment comprises three rear group lenses L41-L42. The water surface imaging switching lens group G5 comprises a switching lens L51, the switching lens is used for compensating defocusing of a water body, and when an optical system performs underwater aerial imaging, the switching lens cuts out a light path; when the optical system is used for imaging the space after water is discharged, the switching lens is switched into a light path, so that underwater space imaging and water surface imaging confocal are realized. The underwater space laser detection rear fixed lens group G6 comprises a laser reflector L62 and a plurality of rear lens groups, and the included angle between the normal of the laser reflector and the second beam of light is 45 degrees.
In some of the above embodiments, the multi-channel shared lens group G2 is composed of four lenses, the first lens L21 is located in the spherical cavity of the voltage-proof protection window, the remaining lenses L22 to L24 are disposed between the voltage-proof protection window G1 and the beam splitting mirror group G3, and the second lens L22 can move back and forth along the optical axis direction. The second lens moves back and forth along the direction of the optical axis, and underwater aerial imaging and underwater aerial laser detection can be used for compensating part of water body disturbance defocusing effect when the optical system works underwater; when the optical system works on the water surface after water flows out, water flows out to form an image, and the function of long-distance and short-distance imaging focusing can be realized.
In some embodiments, the underwater empty laser detection rear fixed lens group G6 includes two laser rear lens groups, which are respectively a biconvex lens L61 and a meniscus lens L63, the biconvex lens is located at the front light of the laser reflector, the meniscus lens is located at the rear light of the laser reflector, both the two laser lenses are of positive focal power, and at least one of the four surfaces of the two lenses is an aspheric surface, which is used for converging light beams, shortening the optical path and correcting aberration, so that the light spots focused by the laser detection light beams on the target surface of the detector are uniform and round.
In some embodiments, the beam splitter group G3 includes a beam splitter having a splitting energy ratio ranging from 1:9 to 5: 5; the beam splitting energy ratio of the beam splitter in this embodiment is 2: 8.
A control method of the multi-functional optical system for cross-media imaging is characterized in that: the method comprises the following steps: judging the medium, and selecting a corresponding detection system by adjusting the water surface imaging switching lens group G5; step two: and adjusting the lenses which can move back and forth along the light rays in the multi-channel shared lens group G2 to correct the imaging of the system.
In some embodiments, step one, the system comprises
The underwater air imaging system is composed of a pressure protection window G1, a multi-channel shared lens group G2, a beam splitter group G3 and a rear fixed lens group G4 shared by underwater imaging and water surface imaging, the working wave band is 400 nm-700 nm, the F # is 1.2, the imaging field of view is 180-degree hemispherical field of view, and the visible light detector is adaptive to 2048 multiplied by 2048 and has the pixel size of 5.5 mu m.
The water-out air-to-air imaging system is composed of a pressure protection window G1, a multi-channel shared lens group G2, a beam splitter group G3, a rear fixed lens group G4 shared by underwater imaging and water surface imaging and a water surface imaging switching lens group G5, the working wavelength range is 480 nm-580 nm, and the detection field of view is not less than the field of view area of the zenith area +/-30 degrees.
The underwater air laser detection system is composed of a pressure protection window G1, a multi-channel shared lens group G2, a beam splitter group G3 and an underwater air laser detection rear fixed lens group G6, the working wave band is 400 nm-700 nm, and the detection field of view is not smaller than the zenith area +/-50 degrees of field of view.
In some embodiments, when the optical system performs underwater aerial imaging, the water surface imaging switching lens group G5 cuts out the optical path; when the optical system is empty imaging after water is discharged, the water surface imaging switching lens group G5 cuts into the light path.
The parameters of the underwater air imaging channel of the embodiment are as follows in tables 1 to 3:
table 1 specific embodiment 1 underwater air imaging channel parameter table
Table 2 parameters table for underwater air laser detection channel in embodiment 1
Table 3 parameters table of post-water out empty imaging channel of embodiment 1
Tables 1-3, radius of curvature refers to the radius of curvature of each lens surface, thickness or spacing refers to the lens thickness or distance between adjacent lens surfaces, material is the lens material, air is the medium between the two lenses is air, wherein surfaces 15, 16 and 17 refer to the rear group lens L42 in the rear fixed lens group (G4) shared by underwater imaging and water imaging, and the lens is a cemented element.
In order to make the system or obtain better imaging quality, the optical system adopts an aspheric surface design, and the surfaces of the lenses in the table are marked with an 'X' sign to form the aspheric surface.
The working principle of the invention is as follows:
when underwater aerial imaging is carried out, imaging light beams are incident from an air medium and are incident to the pressure-resistant protection window G1 through a water medium, the light beams are converged by the spherical pressure-resistant protection window G1 and then continuously propagate backwards, are sequentially refracted by lenses in the multi-channel common lens group G2, and are converted into parallel light beams which are incident to the beam splitter group G3. The beam splitting group G3 realizes beam energy beam splitting, the energy beam splitting in this embodiment is 2:8, 20% of the energy of the underwater aerial imaging beam is reflected in the beam splitter and enters the second beam, 80% of the energy of the underwater aerial imaging beam is transmitted in the beam splitter group G3 and enters the first beam, and the first beam is focused by a lens in the fixed lens group G4 after being shared by underwater imaging and water surface imaging and imaged on the target surface of the detector.
When underwater air laser is detected, imaging light beams are incident from an air medium and are incident to the pressure-resistant protection window G1 through a water medium, the light beams are converged by the spherical pressure-resistant protection window G1 and then continuously spread backwards, are refracted by lenses in the multi-channel common lens group G2 in sequence, and are converted into parallel light beams to be incident to the beam splitter group G3; the beam splitting group G3 realizes beam energy beam splitting, the energy beam splitting of the embodiment is 2:8, 20% of beam energy of the underwater blank imaging beam is reflected in the beam splitter and enters a second beam, 80% of energy of the underwater blank imaging beam is transmitted in the beam splitter group G3 and enters a first beam, and the second beam passes through the lens in the underwater blank laser detection fixed lens group G6 and is converged on the target surface of the detector.
When water is discharged for aerial imaging, imaging light beams enter a pressure-resistant protection window G1 from an air medium, the light beams are converged by a spherical pressure-resistant protection window G1 and then continuously propagate backwards, are sequentially refracted by lenses in a multi-channel common lens group G2, are converted into parallel light beams and enter a beam splitter group G3; the beam splitting lens group G3 realizes beam energy splitting of 2:8, 80% of energy of the outgoing water-to-empty imaging beam is transmitted in the beam splitting lens group G3, and after being converged by a lens in the fixed lens group G4 and a lens in the water surface imaging switching lens group G5 after sharing underwater imaging and water surface imaging, the beam is imaged on a target surface of the detector.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (10)
1. A multi-functional optical system for cross-media imaging, comprising: the underwater imaging switching lens group comprises a pressure-resistant protection window (G1), a multi-channel shared lens group (G2) and a beam splitting lens group (G3), wherein the pressure-resistant protection window, the multi-channel shared lens group and the beam splitting lens group are sequentially arranged from an object side to an image side along a light ray direction, the light ray is divided into two beams of light rays from the beam splitting lens group, a rear fixed lens group (G4) shared by underwater imaging and water surface imaging and a water surface imaging switching lens group (G5) are sequentially arranged on the first beam of light ray, and the water surface imaging switching lens group can be cut in and cut out from the first beam of light ray; and the second beam of light is provided with an underwater empty laser detection rear fixed lens group (G6).
2. The multi-functional optical system for cross-media imaging of claim 1, wherein: the first beam of light and the original light before beam splitting are positioned on the same straight line, and the second beam of light is vertical to the original light before beam splitting.
3. The multi-functional optical system for cross-media imaging according to claim 1 or 2, characterized in that:
the pressure-proof protection window (G1) comprises a spherical meniscus concentric lens;
the multichannel shared lens group (G2) is composed of a plurality of lenses, the first lens is arranged in a spherical inner cavity of the pressure-resistant protection window, the rest lenses are arranged between the pressure-resistant protection window (G1) and the beam splitting lens group (G3), and one lens moving back and forth along the optical axis direction exists in the rest lenses;
the beam splitter group (G3) comprises a beam splitter;
the rear fixed lens group (G4) shared by underwater imaging and water surface imaging comprises a plurality of rear group lenses;
the water surface imaging switching lens group (G5) comprises a switching mirror;
the underwater space laser detection rear fixed lens group (G6) comprises a laser reflector and a plurality of rear lens groups, and the included angle between the normal of the laser reflector and the second beam of light is 45 degrees.
4. The multi-functional optical system for cross-media imaging of claim 3, wherein: the multi-channel shared lens group (G2) is composed of four lenses, the first lens is positioned in the spherical cavity of the voltage-resistant protection window, the rest lenses are arranged between the voltage-resistant protection window (G1) and the beam splitting lens group (G3), and the second lens can move back and forth along the optical axis direction.
5. The multi-functional optical system for cross-media imaging of claim 3, wherein: the underwater space laser detection rear fixed lens group (G6) comprises two laser rear group lenses, and is divided into a double convex lens and a meniscus lens, wherein the double convex lens is positioned at the front light of the laser reflector, the meniscus lens is positioned at the rear light of the laser reflector, the two laser lenses are both positive focal power, and at least one of four surfaces in the two lenses is an aspheric surface.
6. The multi-functional optical system for cross-media imaging according to claim 1 or 2, characterized in that: the beam splitting mirror group (G3) comprises a beam splitter, the beam splitter divides the primary light beam into two light beams, and the spectral energy ratio range of the first light beam and the second light beam is 1: 9-5: 5.
7. The multi-functional optical system for cross-media imaging of claim 5, wherein: the split energy ratio of the first beam of light to the second beam of light is 2: 8.
8. A method of controlling a multi-function optical system for imaging across media as recited in any one of claims 1-7, wherein: comprises that
The method comprises the following steps: the medium is judged, and confocal imaging of the underwater air imaging channel and the water outlet air imaging channel is realized by adjusting the water surface imaging switching lens group (G5);
step two: and adjusting the lenses which can move back and forth along the light rays in the multi-channel shared lens group (G2) to correct the imaging of the system.
9. The method of controlling a multi-function optical system for cross-media imaging according to claim 8, wherein: in step one, the system comprises
An underwater air imaging channel is formed by a pressure protection window (G1), a multi-channel shared lens group (G2), a beam splitting lens group (G3) and an underwater imaging and water surface imaging shared rear fixed lens group (G4), the working wave band is 400-700 nm, the F # is 1.2, and the imaging view field is a 180-degree hemispherical area view field;
a water outlet air-to-air imaging channel is formed by a pressure protection window (G1), a multi-channel shared lens group (G2), a beam splitting lens group (G3), a rear fixed lens group (G4) shared by underwater imaging and water surface imaging and a water surface imaging switching lens group (G5), the working waveband is 480 nm-580 nm, and the detection field of view is not less than the zenith area +/-30 degrees;
an underwater air laser detection channel is formed by a pressure protection window (G1), a multi-channel common lens group (G2), a beam splitter group (G3) and an underwater air laser detection rear fixed lens group (G6), the working wave band is 400 nm-700 nm, and the detection field is not less than the zenith area +/-50 degrees of field area.
10. The method of controlling a multi-function optical system for cross-media imaging according to claim 8, wherein: in the first step, when the optical system performs underwater aerial imaging, a water surface imaging switching lens group (G5) cuts out a light path; when the optical system is empty imaging after water is discharged, the water surface imaging switching lens group (G5) cuts into the light path.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856880A (en) * | 1987-07-27 | 1989-08-15 | Nikon Corporation | Photo-taking lens for an underwater camera |
| JPH07159687A (en) * | 1993-12-02 | 1995-06-23 | Olympus Optical Co Ltd | Optical system of amphibious camera |
| CN101866054A (en) * | 2010-06-03 | 2010-10-20 | 中国科学院长春光学精密机械与物理研究所 | Optical system of multispectral area array CCD (Charge Coupled Device) imager |
| US20160299338A1 (en) * | 2015-04-07 | 2016-10-13 | Canon Kabushiki Kaisha | Image pickup apparatus |
| CN106383400A (en) * | 2016-11-29 | 2017-02-08 | 中山联合光电科技股份有限公司 | Underwater special photography optical imaging system |
| CN107340546A (en) * | 2017-07-24 | 2017-11-10 | 南京信息工程大学 | A kind of undersea detection divides the double CCD real-time polarizations imaging devices in aperture and method |
| CN108983419A (en) * | 2018-06-27 | 2018-12-11 | 湖北华中光电科技有限公司 | A kind of optical system based on multispectral imaging |
| CN110023809A (en) * | 2016-11-28 | 2019-07-16 | 柯尼卡美能达株式会社 | Imaging optical system, lens unit and photographic device |
| US20200133095A1 (en) * | 2018-10-25 | 2020-04-30 | Gopro, Inc. | Interchangeable lens structures |
| CN112649945A (en) * | 2021-01-05 | 2021-04-13 | 中国电子科技集团公司第十一研究所 | Optical system |
-
2021
- 2021-12-06 CN CN202111479690.XA patent/CN114137781A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856880A (en) * | 1987-07-27 | 1989-08-15 | Nikon Corporation | Photo-taking lens for an underwater camera |
| JPH07159687A (en) * | 1993-12-02 | 1995-06-23 | Olympus Optical Co Ltd | Optical system of amphibious camera |
| CN101866054A (en) * | 2010-06-03 | 2010-10-20 | 中国科学院长春光学精密机械与物理研究所 | Optical system of multispectral area array CCD (Charge Coupled Device) imager |
| US20160299338A1 (en) * | 2015-04-07 | 2016-10-13 | Canon Kabushiki Kaisha | Image pickup apparatus |
| JP2016200630A (en) * | 2015-04-07 | 2016-12-01 | キヤノン株式会社 | Image pickup apparatus |
| CN110023809A (en) * | 2016-11-28 | 2019-07-16 | 柯尼卡美能达株式会社 | Imaging optical system, lens unit and photographic device |
| CN106383400A (en) * | 2016-11-29 | 2017-02-08 | 中山联合光电科技股份有限公司 | Underwater special photography optical imaging system |
| CN107340546A (en) * | 2017-07-24 | 2017-11-10 | 南京信息工程大学 | A kind of undersea detection divides the double CCD real-time polarizations imaging devices in aperture and method |
| CN108983419A (en) * | 2018-06-27 | 2018-12-11 | 湖北华中光电科技有限公司 | A kind of optical system based on multispectral imaging |
| US20200133095A1 (en) * | 2018-10-25 | 2020-04-30 | Gopro, Inc. | Interchangeable lens structures |
| CN112649945A (en) * | 2021-01-05 | 2021-04-13 | 中国电子科技集团公司第十一研究所 | Optical system |
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