CN106443942A - F20 mm portable mechanical passive athermal infrared prime lens and using method thereof - Google Patents
F20 mm portable mechanical passive athermal infrared prime lens and using method thereof Download PDFInfo
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- CN106443942A CN106443942A CN201611170518.5A CN201611170518A CN106443942A CN 106443942 A CN106443942 A CN 106443942A CN 201611170518 A CN201611170518 A CN 201611170518A CN 106443942 A CN106443942 A CN 106443942A
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- 238000000034 method Methods 0.000 title claims description 7
- 230000003287 optical effect Effects 0.000 claims abstract description 29
- 125000006850 spacer group Chemical group 0.000 claims abstract description 4
- 239000012634 fragment Substances 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001250 2024 aluminium alloy Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0035—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having three lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
Abstract
The invention relates to an f20 mm portable mechanical passive athermal infrared prime lens. The f20 mm portable mechanical passive athermal infrared prime lens comprises an outer cover and an optical system, wherein the optical system is arranged in the outer cover; a positive optical focus lens A, a negative optical focus lens B and a positive optical focus lens C are successively arranged in the optical system in the incident direction of light rays from left to right; the rear end of the inside of the outer cover is in screwed connection with a rear lens cone; a front lens cone is arranged at the front end of the inside of the outer cover; the positive optical focus lens A is mounted in the front lens cone; the front end of the positive optical focus lens A is fixed on a front pressing ring on the front lens cone in a screwed connection manner; the negative optical focus lens B and the positive optical focus lens C are mounted in the rear lens cone; a BC spacer ring is arranged between the negative optical focus lens B and the positive optical focus lens C; the rear end of the positive optical focus lens C is fixed on a rear pressing ring on the rear lens cone in a screwed connection manner; a circular positioning boss of which the outer diameter is greater than the front lens cone is arranged on the rear end surface of the front lens cone; a spring plate is arranged between the circular positioning boss and the rear lens cone; a front baffle ring which is in screwed connection to the outer cover is arranged on the periphery of the front end of the front lens cone; and a retractable ring is arranged between the front baffle ring and the circular positioning boss. The f20 mm portable mechanical passive athermal infrared prime lens is simple in structure.
Description
Technical field
The present invention relates to a kind of f20mm lightweight mechanical passive no infrared tight shot of transconversion into heat and its using method, belong to
Camera lens field.
Background technology
Continuous development with uncooled detector technology and increasingly mature, LWIR Uncooled Optical System is military
All it is widely used with civil area, because infrared lens have good in anti-interference performance；Night operating distance is remote；Penetrate
Flue dust, haze ability are strong；Can round-the-clock, round-the-clock work；There is multiple target panorama observe, follow the trail of and target recognition ability and good
The advantages of ability of anti-target stealth got well, so propose higher and higher requirement to the image quality of optical system.But by
There is certain heat effect in infrared optical material and mechanical material, the acute variation of operating temperature can produce sternly to optical system
The impact of weight, for example cause focal length variations, image planes drift, image quality to decline etc..Therefore, in order to adapt to varying environment temperature,
Infrared lens are required to have certain temperature self-adaptation ability；And long lasting under continuous monitoring left and right, more require
The features such as infrared lens have large-scale adaptation different weather climatic condition, therefore also wants mirror in the case of long monitoring
Head has the features such as high resolution, mist transmitting be strong, aberration rate is low, features simple structure, and intensity is reliable, stability is strong.However, on the market
Most lens construction is complicated, difficulty of processing and relatively costly, and mist transmitting is poor, resolution is low, lens construction length length, volume
Greatly, because ambient temperature is substantially close to so be difficult to differentiate between the form of monitored things especially when monitoring at night.
Content of the invention
The purpose of the present invention is for above weak point, there is provided a kind of f20mm lightweight machine of reasonable in design
The tool passive no infrared tight shot of transconversion into heat and its using method.
The technical scheme is that, a kind of mechanical passive no infrared tight shot of transconversion into heat of f20mm lightweight, including outer housing
And it is arranged on optical system in outer housing, in the optical system of described camera lens, along light, incident direction is sequentially provided with from left to right
Positive light focus lens A, negative light focus lens B and positive light focus lens C, the Internal back end of described outer housing is bolted with rear lens barrel, described outer housing
Interior forward end be provided with front lens barrel, described positive light focus lens A is installed in front lens barrel, the front end warp of described positive light focus lens A
The front trim ring being screwed onto on front lens barrel is fixed, and described negative light focus lens B and positive light focus lens C is installed in rear lens barrel, institute
State and between negative light focus lens B and positive light focus lens C, be provided with BC spacer ring, the rear end of described positive light focus lens C lens barrel after being screwed onto
On rear trim ring be fixed, the rear end face of described front lens barrel is provided with the circular positioning boss that an external diameter is more than front lens barrel, described
It is provided with shell fragment, the front end week portion of described front lens barrel is provided with the front being screwed onto on outer housing between circular positioning boss and rear lens barrel
Circle, the front end week of described front back-up ring and front lens barrel is provided with O-ring between portion, is provided between described front back-up ring and circle positioning boss
Expansion ring, the airspace between described positive light focus lens A and negative light focus lens B is 1mm, described negative light focus lens B and positive light
Airspace between focus lens C is 12mm.
Further, described front lens barrel includes the first cylinder, and the inside of described first cylinder is provided with a positioning step surface, institute
The middle part stating positioning table terrace offers thang-kng passage, the front end face of described positioning table terrace offers and positive light focus lens A
The detent that is adapted of outline, the rear end face of described positive light focus lens A is embedded in detent, described positioning table terrace
The inside of the first cylinder is separated into the front inner core positioned at front end, the rear inner core positioned at rear end, described positive light focus lens A and front pressure
Circle is located in front inner core.
Further, described rear lens barrel includes the second cylinder, the front end of described second cylinder embed after in inner core, described the
The middle part periphery of two cylinders is provided with the circular connection boss that external diameter is more than the second cylinder, and the described circular boss that connects is bolted in outer housing
Internal perisporium, described shell fragment is installed on circular positioning boss and is connected between boss with circle, described negative light focus lens B burnt mirror with positive light
Piece C is installed in the second cylinder.
Further, described expansion ring is made of plastics, and described shell fragment is made of metal.
A kind of using method of the mechanical passive no infrared tight shot of transconversion into heat of f20mm lightweight, comprises the steps of：Work as ring
When border temperature raises, because positive light focus lens A, negative light focus lens B and positive light focus lens C expand and lead to original Jiao simultaneously
Facing forward shifts leads to obscure, and now expansion ring expands against front lens barrel compression shell fragment and makes positive light focus lens A, negative light Jiao's mirror
The air of piece B, away from diminishing, makes up the focal plane of original biased forwards so as to return to clear picture under normal temperature state.
Compared with prior art, the invention has the advantages that：
（1）There is high imaging resolution, high-penetrability, the object of tiny temperature change can be caught；
（2）Simple and compact for structure, small volume is easy to carry, and cost of manufacture is cheap, suitable for scale production；
（3）Rigidity Calculation can be carried out in lens construction design, suitably increase wall thickness, improve natural frequency, improve camera lens
Vibration resistance is it is ensured that the use requirement of system is it is ensured that the sealing property of camera lens.
Brief description
Below in conjunction with the accompanying drawings patent of the present invention is further illustrated.
Fig. 1 is the optical system schematic diagram of this inventive embodiments；
Fig. 2 is the frame for movement schematic diagram of this inventive embodiments；
In figure：
A- positive light focus lens A；B- bears light focus lens B；C- positive light focus lens C；1- outer housing；Lens barrel before 2-；Trim ring before 3-；4-BC every
Circle；Trim ring after 5-；6- circle positioning boss；7- shell fragment；Back-up ring before 8-；9-O type circle；10- expansion ring；11- first cylinder；12-
Positioning table terrace；Inner core before 13-；Inner core after 14-；15- second cylinder；16- is circular to connect boss；Lens barrel after 17-.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Fig. 1～2, a kind of passive no infrared tight shot of transconversion into heat of f20mm lightweight machinery, including outer housing 1 and
It is arranged on the optical system in outer housing, in the optical system of described camera lens, incident direction is sequentially provided with positive light from left to right along light
Focus lens A, negative light focus lens B and positive light focus lens C, the Internal back end of described outer housing is bolted with rear lens barrel 17, described outer housing
Interior forward end is provided with front lens barrel 2, and described positive light focus lens A is installed in front lens barrel, and the front end of described positive light focus lens A is through spiral shell
The front trim ring 3 being connected on front lens barrel is fixed, and described negative light focus lens B and positive light focus lens C is installed in rear lens barrel, described
It is provided with BC spacer ring 4, on rear end lens barrel after being screwed onto of described positive light focus lens C between negative light focus lens B and positive light focus lens C
Rear trim ring 5 be fixed, the rear end face of described front lens barrel is provided with the circular positioning boss 6 that an external diameter is more than front lens barrel, described
It is provided with shell fragment 7, the front end week portion of described front lens barrel is provided with the front being screwed onto on outer housing between circular positioning boss and rear lens barrel
Circle 8, described front back-up ring and front lens barrel be provided with O-ring 9 front end week between portion, set between described front back-up ring and circle positioning boss
Have expansion ring 10, the airspace between described positive light focus lens A and negative light focus lens B is 1mm, described negative light focus lens B with
Airspace between positive light focus lens C is 12mm.
In the present embodiment, described front lens barrel includes the first cylinder 11, and the inside of described first cylinder is provided with a positioning table
Terrace 12, the middle part of described positioning table terrace offers thang-kng passage, the front end face of described positioning table terrace offers with just
The detent that the outline of light focus lens A is adapted, the rear end face of described positive light focus lens A is embedded in detent, described
Positioning table terrace by the inside of the first cylinder be separated into the front inner core 13 positioned at front end, be located at rear end rear inner core 14, described just
Light focus lens A is located in front inner core with front trim ring.
In the present embodiment, described rear lens barrel includes the second cylinder 15, and the front end of described second cylinder embeds in rear inner core,
The middle part periphery of described second cylinder is provided with the circular connection boss 16 that external diameter is more than the second cylinder, described circular connection boss spiral shell
Be connected to outer housing internal perisporium, described shell fragment be installed on circular positioning boss with circle is connected between boss, described negative light focus lens B and
Positive light focus lens C is installed in the second cylinder.
In the present embodiment, described expansion ring is made of plastics, and described shell fragment is made of metal.
A kind of using method of the mechanical passive no infrared tight shot of transconversion into heat of f20mm lightweight, comprises the steps of：Work as ring
When border temperature raises, because positive light focus lens A, negative light focus lens B and positive light focus lens C expand and lead to original Jiao simultaneously
Facing forward shifts leads to obscure, and now expansion ring expands against front lens barrel compression shell fragment and makes positive light focus lens A, negative light Jiao's mirror
The air of piece B, away from diminishing, makes up the focal plane of original biased forwards so as to return to clear picture under normal temperature state.
In the present embodiment, following optical index has been reached by the optical system that above-mentioned lens set is constituted：
（1）Service band：8μm-12μm；
（2）Focal length：f′=20mm；
（3）Detector：640 × 512,17 μm of LWIR Uncooled type；
（4）Angle of visual field FOV：38°；
（5）Relative aperture D/ f '：1/1.0；
（6）Optics volume：∅44mm×26.1mm（Diameter × length）.
The data of below table, by the optical parametric of the explanation embodiment of the present invention.
Table one：Each lens parameters：
Aspheric mask body face type equation is as follows：
Z be aspheric surface along optical axis direction height be r position when, away from aspheric vertex of surface apart from rise, c=1/R, R=
32.014,k=0,A=-1.425E-005,B=-3.431E-0.08,C=2.2146E-010,D=-1.5022E-012.
Radius of curvature refers to the radius of curvature on each surface, and spacing is the spacing between adjacent two surfaces, illustrates, S1,
S2 is positive light focus lens A away from the surface with neighbouring negative light focus lens B respectively, during the spacing of S1 refers between S1 and S2 surface
In the heart away from other the rest may be inferred.
The present invention selects suitable frame for movement and expansion ring according to the side-play amount of the focal plane of camera lens in the case of varying environment
Material, allows camera lens can keep good imaging effect under -30 DEG C ~ 80 DEG C of camera lens, realizes the machinery quilt of temperature self-adaptation
Dynamic no transconversion into heat；The present invention has that economic and practical is strong, no transconversion into heat stability is strong, structure is simple, the low aberration rate of high definition, mist transmitting
By force, the features such as easy for installation；In structure design, the difference of the thermal coefficient of expansion between reasonable utilization different materials, enter trip temperature
Compensate, realize the frame for movement no transconversion into heat feature of temperature self-adaptation, can be with LWIR Uncooled type 640*512,17 μm of spies
Survey device adaptation, execution document recording and safety monitoring task.
The present invention mechanical passive type no transconversion into heat in structure design eliminates the impact of temperature using expansion ring, in larger model
Enclose interior holding as matter stably, realize the machinery no transconversion into heat of temperature self-adaptation, enable infrared optical system in a larger temperature
Good image quality is kept in the range of degree；In addition the structure design of most on the market camera lens complex, required zero
Part is more, and not only increasing manufacturing cost also makes installation become complicated, and cost of labor greatly improves, and this is set using fixed
Meter, it is to avoid the trouble of secondary adjustment rear cut-off distance it is achieved that structure is extremely light and handy, is installed simple and convenient, greatly reduced cost.
The present invention, on the premise of ensureing compact conformation, can adopt a series of measures, such as suitable increase wall thickness, Ke Yiti
High camera lens vibration resistance, the ability of impact；Can lift the structure of camera lens using 2024 aluminium alloys as the structural member of camera lens
Intensity, stability, further loss of weight, realize light-weight design, and processing is simple, cost is relatively low, realizes the warp of camera lens further
Ji practicality, improves the camera lens market competitiveness.
The object, technical solutions and advantages of the present invention are further described by above-listed preferred embodiment, are answered
It is understood by, the foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of passive no infrared tight shot of transconversion into heat of f20mm lightweight machinery it is characterised in that：Including outer housing and be arranged on
Optical system in outer housing, in the optical system of described camera lens, along light, incident direction is sequentially provided with positive light focus lens from left to right
A, negative light focus lens B and positive light focus lens C, the Internal back end of described outer housing is bolted with rear lens barrel, the interior forward end of described outer housing
It is provided with front lens barrel, described positive light focus lens A is installed in front lens barrel, and the front end of described positive light focus lens A is through being screwed onto front mirror
Front trim ring on cylinder is fixed, and described negative light focus lens B and positive light focus lens C is installed in rear lens barrel, described negative light Jiao's mirror
Be provided with BC spacer ring between piece B and positive light focus lens C, on rear end lens barrel after being screwed onto of described positive light focus lens C after trim ring
It is fixed, the rear end face of described front lens barrel is provided with the circular positioning boss that an external diameter is more than front lens barrel, described circle convex
It is provided with shell fragment, the front end week portion of described front lens barrel is provided with the front back-up ring being screwed onto on outer housing, described front between platform and rear lens barrel
The front end week of circle and front lens barrel is provided with O-ring between portion, is provided with expansion ring between described front back-up ring and circle positioning boss, described
Positive airspace between light focus lens A and negative light focus lens B is 1mm, between described negative light focus lens B and positive light focus lens C
Airspace be 12mm.
2. the passive no infrared tight shot of transconversion into heat of f20mm lightweight according to claim 1 machinery it is characterised in that：Institute
State front lens barrel and include the first cylinder, the inside of described first cylinder is provided with a positioning step surface, the middle part of described positioning table terrace
Offer thang-kng passage, the front end face of described positioning table terrace offers adaptable the determining of outline with positive light focus lens A
Position groove, the rear end face of described positive light focus lens A is embedded in detent, and described positioning table terrace is by the interior part of the first cylinder
It is divided into the front inner core positioned at front end, the rear inner core positioned at rear end, described positive light focus lens A is located in front inner core with front trim ring.
3. the passive no infrared tight shot of transconversion into heat of f20mm lightweight according to claim 2 machinery it is characterised in that：Institute
State rear lens barrel and include the second cylinder, the front end of described second cylinder embeds in rear inner core, and the middle part periphery of described second cylinder sets
There is external diameter to be more than the circular of the second cylinder and connect boss, the described circular boss that connects is bolted in outer housing internal perisporium, described shell fragment peace
It is loaded on circular positioning boss to be connected between boss with circle, described negative light focus lens B and positive light focus lens C is installed on the second cylinder
Interior.
4. the passive no infrared tight shot of transconversion into heat of f20mm lightweight according to claim 1 machinery it is characterised in that：Institute
State expansion ring to be made of plastics, described shell fragment is made of metal.
5. a kind of using method of the mechanical passive no infrared tight shot of transconversion into heat of f20mm lightweight is it is characterised in that comprise as power
Profit requires the passive no infrared tight shot of transconversion into heat of f20mm lightweight machinery described in 1 ~ 4, comprises the steps of：Work as ambient temperature
During rising, because positive light focus lens A, negative light focus lens B and positive light focus lens C expand and lead to original focal plane forward simultaneously
Shift and lead to obscure, now expansion ring expands against front lens barrel compression shell fragment and makes positive light focus lens A, bears light focus lens B's
Air, away from diminishing, makes up the focal plane of original biased forwards so as to return to clear picture under normal temperature state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170518.5A CN106443942A (en) | 2016-12-16 | 2016-12-16 | F20 mm portable mechanical passive athermal infrared prime lens and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170518.5A CN106443942A (en) | 2016-12-16 | 2016-12-16 | F20 mm portable mechanical passive athermal infrared prime lens and using method thereof |
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| Publication Number | Publication Date |
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| CN106443942A true CN106443942A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611170518.5A Pending CN106443942A (en) | 2016-12-16 | 2016-12-16 | F20 mm portable mechanical passive athermal infrared prime lens and using method thereof |
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| CN (1) | CN106443942A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106896484A (en) * | 2017-04-20 | 2017-06-27 | 福建福光天瞳光学有限公司 | A kind of heavy caliber machinery is passive without the infrared telephoto lens of thermalization and its application method |
| CN107065149A (en) * | 2017-04-19 | 2017-08-18 | 福建福光天瞳光学有限公司 | Far infrared high transmittance camera lens and its method of work |
| CN110927915A (en) * | 2018-09-20 | 2020-03-27 | 宁波舜宇车载光学技术有限公司 | Optical lens and method for manufacturing the same |
| CN114286559A (en) * | 2021-12-23 | 2022-04-05 | 航天科工微电子系统研究院有限公司 | Seeker hood mounting structure |
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| CN106125275A (en) * | 2016-08-22 | 2016-11-16 | 福建福光天瞳光学有限公司 | Double Manual adjustable are without the infrared tight shot of transconversion into heat and method of work |
| CN206311815U (en) * | 2016-12-16 | 2017-07-07 | 福建福光天瞳光学有限公司 | F20mm lightweights machinery is passive without the infrared tight shot of thermalization |
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| CN105353489A (en) * | 2015-12-14 | 2016-02-24 | 福建福光股份有限公司 | f35mm mechanical passive-type athermalization lens and assembly method therefor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065149A (en) * | 2017-04-19 | 2017-08-18 | 福建福光天瞳光学有限公司 | Far infrared high transmittance camera lens and its method of work |
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| CN110927915A (en) * | 2018-09-20 | 2020-03-27 | 宁波舜宇车载光学技术有限公司 | Optical lens and method for manufacturing the same |
| CN114286559A (en) * | 2021-12-23 | 2022-04-05 | 航天科工微电子系统研究院有限公司 | Seeker hood mounting structure |
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Application publication date: 20170222 |