CN1677167A - Three-wire array CCD push-scanning type polarization imaging detection device - Google Patents
Three-wire array CCD push-scanning type polarization imaging detection device Download PDFInfo
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- CN1677167A CN1677167A CN 200410065796 CN200410065796A CN1677167A CN 1677167 A CN1677167 A CN 1677167A CN 200410065796 CN200410065796 CN 200410065796 CN 200410065796 A CN200410065796 A CN 200410065796A CN 1677167 A CN1677167 A CN 1677167A
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Abstract
The invention is a three-line array CCD scanning-mode polarizing, imaging and detecting device, and in its light path, optical lens group, filtering plate, parallel polarization detectors at the angles of 0 deg., 60 deg. and 120 deg., and three-line array CCD detectors are installed in turn, where the polarization detectors are polarizing plates pasted on the surface of the CCD detectors or three-column picture elements coated on the surface of the CCD detectors, corresponding to the CCD detectors. The signals of the CCD detectors are inputted into a data collecting, transmitting and imaging system. The invention adopts a line-array scanning and imaging mode, and only need use a public optical imaging system, thus compact, small-sized, light and low-power, and suitable for a moving platform whose load space is limited to work; at the same time, because of less energy losses and relatively higher SNR, it is suitable to carry out polarization detection on the object to obtain polarization data in a further distance and at a larger height.
Description
Technical field
The invention belongs to technical field of photoelectric detection, be specifically related to a kind of CCD polarization imaging detection device.
Background technology
Up to the present, being used for carrying out on a surface target the instrument that polarization surveys mainly is the area array CCD polarization detecting device.This instrument makes light pass through three cover optical systems, and again through 0 °, 60 °, 120 ° three direction polaroid, to the area array CCD detector, light signal changes electric signal into, at the polarization image of electronic system export target.This detector belongs to picture formula polarization imaging detection device, and structure is complicated, and volume is bigger, and in addition, message transmission rate is relatively slow.
Another also is the area array CCD polarization detecting device.It places Amici prism in optical system, a branch of light is divided into three beams, respectively through 0 °, 60 °, 120 ° three direction polaroid, sensitization on three area array CCDs, the polarization image of export target.The advantage of this instrument is the problem that does not have pixel registration, but its when carrying out three fens from a branch of light of target, energy has also carried out three fens, the signal to noise ratio (S/N ratio) of system is affected; Simultaneously, the structure of this sniffer is too big, has limited its engineering and has used.
Summary of the invention
The purpose of this invention is to provide a kind of compact conformation, energy does not lose, and can extract the target polarization information again, the output polarization image is finished polarization and is surveyed, and is suitable for the three-wire array CCD push-scanning type polarization imaging sniffer that engineering is used.
Technical scheme of the present invention is as follows:
The three-wire array CCD push-scanning type polarization imaging sniffer, include shell, 0 °, 60 °, 120 ° three direction analyzer, ccd detector connects ccd signal collection transmission and disposal system, it is characterized in that being equipped with successively in the light path optical lens group, optical filter, 0 °, 60 °, 120 ° three direction analyzer of parallel arranged, the three-linear array CCD detector; 0 °, 60 °, 120 ° three direction analyzers are the polarizing coatings that are affixed on the polaroid of detector surface or directly are plated on detector surface, correspond respectively to three row pixels of three-linear array CCD detector.
Described sniffer is characterized in that optical lens group is formed by three combination of lensess, optical filter wave band 500nm-750nm.
The course of work of the present invention: from reflected light the converging of target through optical lens group, become the visible light of choosing wavelength band through optical filter again, become 0 °, 60 °, 120 ° three direction polarized light through the analyzer analyzing, and be imaged on respectively on three CCD linear arrays of detector, three row CCD linear array detectors change the light signal of three polarization directions into electric signal, are gathered respectively by electronic system.The present invention is installed on the work of flight mobile platform, and the orientation of linear array is swept into figure perpendicular to the heading of aircraft by mobile the pushing away of mobile platform.The image-forming information of three polarization directions parses one-tenth figure polarization information respectively after pixel calibration and other Flame Image Process, and the output polarization image.
Optical lens group: form by one group of lens.Major function is imaging and correcting chromatic aberration.
Optical filter: select the detecting band of application need, choose broadband 500nm-750nm optical filter, corresponding system is single channel, broadband system.
Polarizing coating: the polarizing coating of 0 °, 60 °, 120 ° three directions of plating on the three-linear array CCD detector corresponds respectively to three row pixels, or polaroid is affixed on detector surface.
Three-linear array CCD detector: the three-linear array CCD requirement on devices of choosing: be integrated in the row of three on a slice detector chip CCD linear array, every row pixel number is not less than 5000, row are unsuitable excessive or too small with column pitch, excessive, can make the time delay that obtains three polarization direction information of same target too big, cause polarization information that bigger change takes place, can not satisfy the needs that polarization is surveyed; Spacing is too small, and the making of polaroid, coating process level can not meet the demands, and is difficult to polaroid is affixed on or is plated on the detector, and therefore, general row are elected as about 1mm with column pitch.In order to improve resolution, pixel dimension is unsuitable excessive, generally should not surpass 10 μ m, output 12bit black-and-white image signal.At present, external many companies can both produce this line array CCD device, as companies such as NEC, SONY.
Ccd signal collection transmission and disposal system: carry out data acquisition, the transmission of ccd signal, and carry out Flame Image Process, quasi real time become figure according to the attitude information of aircraft platform.
Advantage of the present invention:
1, simple in structure, volume is little.Adopt the chip type detector, promptly three row CCD linear arrays are integrated on the detector chip, and the volume and weight of detector is reduced greatly.Compare with existing use area array CCD sniffer, need not adopt independently imaging optical device on three polarization directions, the volume and weight of whole sniffer has nearly reduced 60%.
2, energy free of losses, the signal to noise ratio (S/N ratio) height.With existing three minutes area array CCD sniffer of light is compared, this sniffer does not need energy three minutes, and therefore, energy does not lose, be suitable for more at a distance target being surveyed, it is significant to be infected with detection and national defense safety etc. for environmental pollution monitoring, poison gas.
3, be fit to mobile platform.Because adopt linear array push-broom type working method, this sniffer is more suitable in mobile platform, as the small-sized unmanned aircraft platform etc., this makes and utilizes limited load space, and the polarization information that obtains target becomes possibility.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Sniffer of the present invention has shell, following various device is installed: in the light path in the shell optical lens group that is made of lens 9,8,7,5,4 is installed successively in the shell, lens 5 are equipped with grating 6 near a side of lens 7, the height of lens 7,8,9 is 50mm, distance is 6.4mm between the convex surface of lens 7,8, distance is 83.8mm between the concave surface of lens 5,7, and the height of lens 4,5 is 10mm, and grating 6 is 8.8mm with the spacing of lens 5.
Optical filter 3 is installed, 0 °, 60 °, 120 ° three direction polarizing coating 2 of parallel arranged, three-linear array CCD detector 1 in the follow-up light path of lens 4; 0 °, 60 °, 120 ° three direction polarizing coatings 2 be paster or plated film in detector 1 surface, correspond respectively to three row CCD linear array pixels of three-linear array CCD detector.The wave band 500nm-750nm of optical filter 3.Three-linear array CCD detector 1 is the three-linear array CCD device (50003pixel CCD Linear Sensor (Color)) that Sony is produced, three row CCD linear arrays are integrated on the film explorer device, row and column pitch 64 μ m, every row pixel several 5000, pixel dimension is 8 * 8 μ m, output 12bit black-and-white image signal.
This sniffer is applied to the unmanned plane platform, a kind of useful load as unmanned plane, obtain the target polarization information of poison gas contaminated zone, carry out Target Recognition, or carry out Data Fusion with spectral information that synthetic-aperture radar, general optical camera obtain, can realize accurate differentiation to target.
Claims (2)
1, three-wire array CCD push-scanning type polarization imaging sniffer, include shell, 0 °, 60 °, 120 ° three direction analyzer, ccd detector connects ccd signal collection transmission and disposal system, it is characterized in that being equipped with successively in the light path optical lens group, optical filter, 0 °, 60 °, 120 ° three direction analyzer of parallel arranged, the three-linear array CCD detector; 0 °, 60 °, 120 ° three direction analyzers are the polarizing coatings that are affixed on the polaroid of detector surface or directly are plated on detector surface, correspond respectively to three row pixels of three-linear array CCD detector.
2, sniffer according to claim 1 is characterized in that optical lens group is formed by five combination of lensess; Optical filter wave band 500nm-750nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100657965A CN1310064C (en) | 2004-11-16 | 2004-11-16 | Three-wire array CCD push-scanning type polarization imaging detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100657965A CN1310064C (en) | 2004-11-16 | 2004-11-16 | Three-wire array CCD push-scanning type polarization imaging detection device |
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| Publication Number | Publication Date |
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| CN1677167A true CN1677167A (en) | 2005-10-05 |
| CN1310064C CN1310064C (en) | 2007-04-11 |
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| CNB2004100657965A Expired - Fee Related CN1310064C (en) | 2004-11-16 | 2004-11-16 | Three-wire array CCD push-scanning type polarization imaging detection device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7415335B2 (en) * | 2003-11-21 | 2008-08-19 | Harris Corporation | Mobile data collection and processing system and methods |
| CN101806959B (en) * | 2009-11-12 | 2012-08-08 | 北京理工大学 | Real-time small polarization imaging device |
| CN105049690A (en) * | 2015-07-06 | 2015-11-11 | 中国科学院遥感与数字地球研究所 | Portable polarization digital camera and imaging method |
| CN107843343A (en) * | 2017-11-23 | 2018-03-27 | 长光卫星技术有限公司 | Polarization multi-spectrum aerial surveying camera based on monolithic face battle array cmos detector |
| CN111006766A (en) * | 2019-12-29 | 2020-04-14 | 中国科学院西安光学精密机械研究所 | Portable snapshot type array polarization multispectral imager and imaging method |
| TWI818047B (en) * | 2019-07-11 | 2023-10-11 | 大陸商深圳中科飛測科技股份有限公司 | Testing equipment and testing methods |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06273677A (en) * | 1993-03-18 | 1994-09-30 | Hideaki Ishizuki | Polarizing and phase difference plates built in scope for monitor |
| JP2000275027A (en) * | 1999-03-23 | 2000-10-06 | Takaoka Electric Mfg Co Ltd | Slit confocal microscope and surface shape measuring apparatus using it |
| JP2004061515A (en) * | 2002-07-29 | 2004-02-26 | Cark Zeiss Smt Ag | Method and device for determining influence onto polarization state by optical system, and analyzer |
| CN2569177Y (en) * | 2002-09-20 | 2003-08-27 | 中国科学院安徽光学精密机械研究所 | Polarized imaging device |
-
2004
- 2004-11-16 CN CNB2004100657965A patent/CN1310064C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7415335B2 (en) * | 2003-11-21 | 2008-08-19 | Harris Corporation | Mobile data collection and processing system and methods |
| CN101806959B (en) * | 2009-11-12 | 2012-08-08 | 北京理工大学 | Real-time small polarization imaging device |
| CN105049690A (en) * | 2015-07-06 | 2015-11-11 | 中国科学院遥感与数字地球研究所 | Portable polarization digital camera and imaging method |
| WO2017004898A1 (en) * | 2015-07-06 | 2017-01-12 | 中国科学院遥感与数字地球研究所 | Portable polarized digital camera and imaging method therefor |
| CN105049690B (en) * | 2015-07-06 | 2017-06-09 | 中国科学院遥感与数字地球研究所 | Portable polarization digital camera and its imaging method |
| CN107843343A (en) * | 2017-11-23 | 2018-03-27 | 长光卫星技术有限公司 | Polarization multi-spectrum aerial surveying camera based on monolithic face battle array cmos detector |
| TWI818047B (en) * | 2019-07-11 | 2023-10-11 | 大陸商深圳中科飛測科技股份有限公司 | Testing equipment and testing methods |
| CN111006766A (en) * | 2019-12-29 | 2020-04-14 | 中国科学院西安光学精密机械研究所 | Portable snapshot type array polarization multispectral imager and imaging method |
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| Publication number | Publication date |
|---|---|
| CN1310064C (en) | 2007-04-11 |
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