CN109683429A - A kind of method of the small big visual field camera job stability of F number under promotion complex environment - Google Patents
A kind of method of the small big visual field camera job stability of F number under promotion complex environment Download PDFInfo
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- CN109683429A CN109683429A CN201910143990.7A CN201910143990A CN109683429A CN 109683429 A CN109683429 A CN 109683429A CN 201910143990 A CN201910143990 A CN 201910143990A CN 109683429 A CN109683429 A CN 109683429A
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- visual field
- optical system
- big visual
- field camera
- job stability
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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
- G03B13/18—Focusing aids
- G03B13/24—Focusing screens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The present invention discloses a kind of method for promoting the small big visual field camera job stability of F number under complex environment, this method be by the big visual field camera optical system of small F number as plane is placed around collimating microlens array, by optical system converging light collimated incident to focal plane, to stretch optical system depth of focus, in the demand for reducing the splicing flatness to extensive splicing focal plane, while reducing large visual field optical system and extensive splicing focal plane difficulty of matching, the purpose for promoting the small big visual field camera job stability of F number under complex environment is realized.
Description
Technical field
The invention belongs to photoelectric instrument field, small big visual field camera the operation is stable of F number under a kind of promotion complex environment is provided
The method of property.
Background technique
The camera to work under complex space environment is influenced by space temperature environment acute variation, camera mechanical-optical setup
Deformation occurs for meeting, so as to cause the variation of camera image quality, and then influences the stability of camera operation on orbit.At this stage, with space
Remote sensing technology is to the high stable working performance application demand to the big visual field high-resolution camera under complex space environment that works
There is small F number large visual field optical system cooperation splicing in promotion and ultra-large focal plane detector Development Techniques bottleneck problem
The camera scheme of extensive focal plane, although solve the large-scale focus planar detector Discussion On Development of monolithic, such as 4 pieces of 2K ×
The detector of 2K splices to obtain the detector of 1 piece of 8K × 8K, but multiple detector photosurfaces are difficult in splicing
In the same plane, the smaller depth of focus of F number of general big visual field high-resolution camera is smaller, to bring splicing gained extensive
Detector is difficult to the problem of matching in high precision between the small F number optical system of big visual field, and the big visual field camera of small F number is by environment
Influence of Temperature Field is easier to reduce its job stability.
Summary of the invention
In order to solve the problems, such as that the small big visual field camera job stability of F number, the present invention disclose one kind under above-mentioned miscellaneous space environment
Rise complex environment under the small big visual field camera job stability of F number method, this method be by optical system as plane is put
Collimating microlens array is set, by optical system converging light collimated incident to focal plane, stretches optical system depth of focus to realize
Purpose, specific features are mainly manifested in the following aspects:
1) in the optical system of the big visual field camera of small F number as plane is placed around collimating microlens array, which will
After the beam collimation that optical system is assembled, it is enabled to be incident to focal plane；
2) microlens array size, lenticule cell size, distance and detector size and pixel between lenticule unit
Resolution match；
3) focal power of each lenticule unit in microlens array is matched with optical system convergent beam F number.
Detailed description of the invention
Fig. 1: job stability promotes schematic illustration.
Fig. 2: job stability promotes example index path.
Specific embodiment
By taking the infrared camera of 10 degree of visual field of focal length 1000mm of F#2 as an example, optical system depth of focus is not more than 4 λ F#2, right
In 4 micron wave length of medium wave, depth of focus is not more than 64 μm.It is corresponding for the infrared camera of 10 degree of visual field of the F#2 of focal length 1000mm
Picture planar dimension size be 175mm.1K × 1K the detector for being 28 μm for pixel resolution, at least demand 6 × 6 spies
It surveys device to be spliced, when 36 film explorers on 175mm scale splice, photosensitive facial plane degree is better than 30 μm under normal circumstances.The phase
If machine works on geostationary orbit three axis stabilized satellite platform, day and night temperature is about 100K, and mechanical-optical setup is easy to become
Shape causes optical system to deviate as plane and extensive focal plane position.
Using the method for the promotion camera job stability that invention provides, in the picture plane position of conventional optical systems
It sets and is placed around microlens array, the converging beam of optical system is collimated, optical system depth of focus is theoretically stretched to nothing
Big distance is limited, that is, reduces the location matches precision between optical system and extensive focal plane, there is the work for promoting camera
Environmental suitability promotes the job stability of camera.
Based on this method, focal length 1000mm 10 degree of visual field of F#2 infrared camera as plane after place after 0.02mm,
0.028 μm of rectangle microlens array of unit size, microlens array scale cover detector focal plane, it is ensured that microlens array is big
Distance is matched with detector size and pixel resolution between small, lenticule cell size, lenticule unit.In addition, lenticule
Front and rear surfaces radius be convex 0.135mm, thickness 0.05mm, refractive index 4, it is ensured that each lenticule in microlens array
The focal power of unit is matched with optical system convergent beam F number.Optical system depth of focus after design becomes infinity such as Fig. 2 institute
Show, so that the splicing precision of the photosurface between multi-slice detector is substantially reduced, the photosurface flatness between multi-slice detector
It is required that 1mm can be reduced to from 30 μm, and it is easier to the space environment of adaptive temperature field bad environments, work with higher
Stability.
Claims (1)
1. a kind of method for promoting the small big visual field camera job stability of F number under complex environment, it is characterised in that including following step
It is rapid:
1) for working in the small big visual field camera of F number under Complex Temperature Field environment, in its optical system as plane is placed around
Collimating microlens array, the beam collimation which assembles optical system,
And it is enabled to be incident to focal plane；
2) microlens array size, lenticule cell size, distance and detector size and pixel are differentiated between lenticule unit
Rate matching；
3) focal power of each lenticule unit in microlens array is matched with optical system convergent beam F number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143990.7A CN109683429A (en) | 2019-02-27 | 2019-02-27 | A kind of method of the small big visual field camera job stability of F number under promotion complex environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143990.7A CN109683429A (en) | 2019-02-27 | 2019-02-27 | A kind of method of the small big visual field camera job stability of F number under promotion complex environment |
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| Publication Number | Publication Date |
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| CN109683429A true CN109683429A (en) | 2019-04-26 |
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| CN201910143990.7A Pending CN109683429A (en) | 2019-02-27 | 2019-02-27 | A kind of method of the small big visual field camera job stability of F number under promotion complex environment |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014884A (en) * | 2004-08-16 | 2007-08-08 | 艾科悉德成像有限公司 | Method and system for extending the depth of focus |
| WO2011018749A1 (en) * | 2009-08-11 | 2011-02-17 | Koninklijke Philips Electronics N.V. | Multi-spectral imaging |
| CN102096274A (en) * | 2010-11-26 | 2011-06-15 | 中国科学院上海技术物理研究所 | High-precision fine tuning method for large-scale planar array spliced focal plane |
| CN102866480A (en) * | 2012-09-29 | 2013-01-09 | 北京空间机电研究所 | Large view field optical imaging system based on computing imaging technology |
| CN102944305A (en) * | 2012-11-12 | 2013-02-27 | 北京航空航天大学 | Spectral imaging method and spectrum imaging instrument of snapshot-type high throughput |
| CN203101791U (en) * | 2012-12-26 | 2013-07-31 | 山东省科学院海洋仪器仪表研究所 | Infrared-zoom light-field camera |
| CN103698900A (en) * | 2013-12-30 | 2014-04-02 | 苏州大学 | Optical imaging method and system for large-scale high-resolution remote sensing camera |
| CN105488810A (en) * | 2016-01-20 | 2016-04-13 | 东南大学 | Focused light field camera internal and external parameter calibration method |
| US20170038481A1 (en) * | 2015-08-07 | 2017-02-09 | The Board Of Trustees Of The Leland Stanford Junior University | Photonic-channeled x-ray detector array |
| WO2018132767A1 (en) * | 2017-01-13 | 2018-07-19 | Volfson Leo | Continuous zoom afocal lens assembly |
-
2019
- 2019-02-27 CN CN201910143990.7A patent/CN109683429A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014884A (en) * | 2004-08-16 | 2007-08-08 | 艾科悉德成像有限公司 | Method and system for extending the depth of focus |
| WO2011018749A1 (en) * | 2009-08-11 | 2011-02-17 | Koninklijke Philips Electronics N.V. | Multi-spectral imaging |
| CN102472664A (en) * | 2009-08-11 | 2012-05-23 | 皇家飞利浦电子股份有限公司 | Multi-spectral imaging |
| CN102096274A (en) * | 2010-11-26 | 2011-06-15 | 中国科学院上海技术物理研究所 | High-precision fine tuning method for large-scale planar array spliced focal plane |
| CN102866480A (en) * | 2012-09-29 | 2013-01-09 | 北京空间机电研究所 | Large view field optical imaging system based on computing imaging technology |
| CN102944305A (en) * | 2012-11-12 | 2013-02-27 | 北京航空航天大学 | Spectral imaging method and spectrum imaging instrument of snapshot-type high throughput |
| CN203101791U (en) * | 2012-12-26 | 2013-07-31 | 山东省科学院海洋仪器仪表研究所 | Infrared-zoom light-field camera |
| CN103698900A (en) * | 2013-12-30 | 2014-04-02 | 苏州大学 | Optical imaging method and system for large-scale high-resolution remote sensing camera |
| US20170038481A1 (en) * | 2015-08-07 | 2017-02-09 | The Board Of Trustees Of The Leland Stanford Junior University | Photonic-channeled x-ray detector array |
| CN105488810A (en) * | 2016-01-20 | 2016-04-13 | 东南大学 | Focused light field camera internal and external parameter calibration method |
| WO2018132767A1 (en) * | 2017-01-13 | 2018-07-19 | Volfson Leo | Continuous zoom afocal lens assembly |
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Application publication date: 20190426 |