CN103926000A - Image spectrum detection device - Google Patents
Image spectrum detection device Download PDFInfo
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- CN103926000A CN103926000A CN201410187794.7A CN201410187794A CN103926000A CN 103926000 A CN103926000 A CN 103926000A CN 201410187794 A CN201410187794 A CN 201410187794A CN 103926000 A CN103926000 A CN 103926000A
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Abstract
The invention discloses an image spectrum detection device. The image spectrum detection device comprises an imaging lens set, a reflecting mirror, imaging lenses, a CCD camera, an optical fiber, a fiber optical spectrometer and a display processor. An acute angle is formed between the reflecting mirror and the optical axis. Incident image signals transmit the imaging lens set to form incident light signals, the incident light signals are reflected to the imaging lenses through the reflecting mirror and converged into the CCD camera to form image information, and the image information is displayed in the display processor. A small hole matched with a bare fiber is formed in the center of the reflecting mirror, the bare fiber end of the optical fiber receives the incident light signals through the small hole, the other end of the optical fiber is connected with the fiber optical spectrometer to detect spectrum information, and a spectrogram is displayed on the display processor. The incident light signals are directly coupled to the optical fiber and transmitted to the fiber optical spectrometer for spectrum measurement, no reflecting media are needed in the process, and truest spectrum signals can be detected. The spectral resolution can be increased to the order of magnitude that delta lambda/ lambda is equal to 0.0001 through an image analysis system according to the technical parameters of an existing commercial fiber optical spectrometer.
Description
Technical field
The present invention relates to spectrum of use, light spectrum image-forming technology, microspectrum and image detection field, more specifically, relate to a kind of image spectrum sniffer.
Background technology
Spectrographic detection and analytical technology have contactless, undamaged advantage, the index such as physical arrangement, chemical composition of testee can be detected, are a kind of increasingly important research meanses in natural science.
Spectral assessment is based on point measurement, and image measurement is to change based on spatial character, and both respectively have its relative merits.Therefore by both combinations, produce light spectrum image-forming subject.Light spectrum image-forming data are mass data sources of collection of illustrative plates unification, and it has comprised image information and spectral information simultaneously, can provide the spectral intensity data of each pixel on each wave band, and spectral resolution is higher.Light spectrum image-forming technology can be divided three classes: multispectral imaging, high light spectrum image-forming and Hyper spectral Imaging technology, their spectral resolution is exponential increase.
As far back as the sixties in 20th century, scholar has just proposed multi-optical spectrum imaging technology, but this technology can only simple detection visible ray and the several wave bands of near infrared region, and spectral resolution only has Δ λ/λ=0.1 order of magnitude.The nineteen eighty-three U.S. develops jet propulsion laboratory the high imaging spectrometer of First (AIS-1), and its spectral resolution reaches Δ λ/λ=0.01 order of magnitude, both at home and abroad the research of high spectrum is reached its maturity afterwards.The hyperspectral imager that TRW Ltd.'s development code name of the most outstanding first-elected famous American of hyperspectral imager is trwis-3, its wavelength band is very wide, from 0.4um to 2.5um, has 384 continuous spectrum passages.Yet wanting to realize resolution also needs researchist further to make great efforts up to the hyperspectral imager of Δ λ/λ=0.001 magnitude.
Light spectrum image-forming technology not only has spectrally resolved ability, also has image resolution ability, utilizes light spectrum image-forming technology not only can carry out qualitative and quantitative analysis to examined object, and can also enter it is positioned to analysis.So light spectrum image-forming technology is mainly used in remote sensing observations field, as carry out geology mineral identification charting research, vegetation ecological and military target identification etc.
But imaging spectral needs save data very huge, and in a lot of practical applications, we only need one-point measurement spectrum, do not need each pixel in image to carry out spectral measurement, only need to carry out spectral measurement to interested one or several pixel regions of image, this is mainly reflected in the spectrum of use fields such as nanometer material science, cell biology, clinical medicine, slin emissivity.
Summary of the invention
The technical matters existing in order to overcome existing light spectrum image-forming, the present invention proposes a kind of image spectrum sniffer, for one or several interested pixel region of picture centre position is carried out to spectral measurement analysis detection, adopting this measuring method can make up traditional light spectrum image-forming technology all needs to carry out spectral measurement to whole pixels, and causing need to larger storage space and the deficiency brought of large data processing.
In order to solve above-mentioned deficiency, technical scheme of the present invention is:
An image spectrum sniffer, comprises imaging lens group, catoptron, imaging len, area array CCD camera, optical fiber, fiber spectrometer and video-stream processor;
Incident image signal forms incident optical signal by imaging lens group, and incident optical signal reflexes to imaging len by the reflecting surface of catoptron, focuses in area array CCD camera, forms image information, and shows in video-stream processor;
Described catoptron and optical axis are a angle, 90 ° of 0 ° of < a <; And the center of catoptron has the aperture suitable with bare fibre, the bare fiber ends of optical fiber is connected with catoptron by aperture, another termination fiber spectrometer; Fiber spectrometer is connected with video-stream processor.
Optical axis refers to the center line of incident optical signal.Catoptron and optical axis have certain angle, thereby the reflecting surface of incident optical signal by catoptron reflexes to imaging len, focuses on area array CCD surface, forms image information.
Incident image signal forms incident optical signal by imaging lens group 1, and reflexes to imaging lens group by catoptron 2, focuses in area array CCD camera 4, forms image information, and shows in video-stream processor 8.
In catoptron 2 centers, its incident optical signal directly enters into optical fiber 6 in addition, and is transferred to fiber spectrometer 7, forms spectral information.
In order to prevent from becoming flexible, cause fibercuts or translation, the bare fiber ends of optical fiber is fixed in the aperture of catoptron by naked fine adapter, and adopts fixture naked fine adapter to be pasted and fixed on to the shady face of catoptron.The fibre core of bare fiber ends and covering insert in aperture through after bare fiber adaptor, and it is level and smooth that fiber end face and catoptron keep.
The position of these six assemblies of imaging lens group, catoptron, imaging len, area array CCD camera, bare fiber adaptor and fixture thereof is relatively-stationary, and wires up with magazine.As shown in frame as empty in Fig. 1.If observe the spectral information of other positions, can point-of-interest be positioned in the middle of image mobile magazine.
Wherein video-stream processor is computing machine, and optical fiber is multimode optical fiber.
Compared with prior art, the beneficial effect of technical solution of the present invention is: incident optical signal direct-coupling of the present invention enters optical fiber, be transferred to fiber spectrometer and carry out spectral measurement, middle without through any reflecting medium, can detect the most real spectral signal.This device is without carrying out spectrum dimension scanning when carrying out spectral measurement, so structure is also simpler, operates more flexibly, and cost also will significantly reduce.
The present invention has realized image spectrum and has measured and the object of analyzing, and any one or a plurality of pixel in image can be carried out to spectral measurement.With traditional light spectrum image-forming technology, compare, without all pixels of image are carried out to spectral measurement and storage, thereby improve measuring speed, simplied system structure.
The present invention can be equipped with any fiber spectrometer, thereby realize wide spectral measurement, according to the technical parameter of current commercial fiber spectrometer, this image analysis system can be brought up to spectral resolution Δ λ/λ=0.0001 order of magnitude, compare with Hyper spectral Imaging technology, at least can improve an order of magnitude.The wave bands such as the optional covering ultraviolet light of while spectral measurement ranges, visible ray, near infrared light, far red light.This system is without carrying out spectrum dimension scanning, so structure is also simpler, operates more flexibly, and cost also will significantly reduce.
Accompanying drawing explanation
Fig. 1 is a kind of image spectrum sniffer schematic diagram provided by the invention.
Fig. 2 is the schematic diagram of catoptron center pit, naked fine adapter and fixture.
Embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent;
For better explanation the present embodiment, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product;
To those skilled in the art, in accompanying drawing some known configurations and explanation thereof may to omit be understandable.
1-imaging lens group; 2-catoptron; 3-imaging len; 4-area array CCD camera; 5-optical fiber; 6-fiber spectrometer; 7-video-stream processor; The naked fine adapter of 8-; 9-fixture.
The present invention proposes image spectrum concept first, is about to spectrographic detection and image detection and wants to merge, and one or several pixel region of picture centre position is carried out to spectral measurement.Compare with traditional light spectrum image-forming, without all pixels of image are carried out to spectral measurement, thereby improve measuring speed, system architecture also will be simpler, operate more flexibly, and cost also will significantly reduce.Filled up the blank in this field.
Incoming signal light direct-coupling of the present invention enters optical fiber, is transferred to fiber spectrometer and carries out spectral measurement, middle without through any reflecting medium, can detect the most real spectral signal.
According to Fig. 1, provide good embodiment of the present invention below, in order to system structure characteristic of the present invention to be described, realize the method for spectral measurement, rather than be used for limiting scope of the present invention.
As Fig. 1, a kind of image spectrum sniffer, comprises imaging lens group 1, catoptron 2, imaging len 3, area array CCD camera 4, optical fiber 5, fiber spectrometer 6, computing machine, naked fine adapter 8; Fixture 9;
Incident image signal forms incident optical signal by imaging lens group 1, and incident optical signal reflexes to imaging len 3 by the reflecting surface of catoptron 2, focuses in area array CCD camera 4, forms image information, and shows on computers;
Described catoptron 2 is a angle with optical axis, 90 ° of 0 ° of < a <; And the center of catoptron 2 offers the aperture suitable with bare fibre, the bare fiber ends of optical fiber 5 is connected with catoptron 2 by aperture, another termination fiber spectrometer 6; Fiber spectrometer 6 is connected with computing machine.Fixture 9 is bare fiber adaptor 8 fixedly, and is pasted catoptron 2 center shady faces, prevents from that bare fiber adaptor 8 is loosening to cause fibercuts or displacement.The fibre core of optical fiber 5 and covering are through the aperture at the rear insertion catoptron of bare fiber adaptor 82 centers, and fiber end face and catoptron 2 keep level and smooth.
In the present embodiment, employing resolution is the area array CCD camera of 1024 * 768,1/2 inch, and catoptron 2 is 70 ° with the angle of optical axis, and the diameter of the aperture that center is offered is 125um; Optical fiber 5 adopts multimode optical fiber, and internal diameter (fibre core) is 62.5 μ m, and external diameter (covering) is 125 μ m.Bare fiber adaptor 8 adopts SC type, and bore dia is 125um.Fixture 9 is bare fiber adaptor 8 fixedly, and is pasted catoptron 2 center shady faces, prevents from that bare fiber adaptor 8 is loosening to cause fibercuts or displacement.The fibre core of optical fiber 5 and covering are through in the rear insertion aperture of bare fiber adaptor 8, and fiber end face and catoptron 2 keep level and smooth.
Meanwhile, the spectral measurement ranges of fiber spectrometer 6 is 200nm-1100nm, and optical resolution is 0.3nm, and integral time, 1ms was to being greater than 60s.
The image of Computer display area array CCD camera 4, and mark out point midway; Also for controlling, fiber spectrometer 6 carries out spectral measurement and spectrogram shows simultaneously.
The workflow of whole system is:
Incident image signal forms incident optical signal by imaging lens group 1, and reflexes to imaging lens group by catoptron 2, focuses in area array CCD camera 4, forms image information, and shows in computing machine.
In catoptron 2 centers, its incident optical signal directly enters into optical fiber 5 in addition, and is transferred to fiber spectrometer 6, forms spectral information.
The position of imaging lens group 1, catoptron 2, imaging len 3, area array CCD camera 4, bare fiber adaptor 8 and fixture 9 these six assemblies thereof is relatively-stationary, and wires up with magazine.If observe the spectral information of other positions, can point-of-interest be positioned in the middle of image mobile magazine.
Image spectrum of the present invention, without the scanning of carrying out spectrum dimension, makes it faster than imaging spectral speed of detection, and data volume is little, and spectral resolution is higher, if arrange in pairs or groups high-resolution spectrometer, its spectral resolution can reach Δ λ/λ=0.0001 order of magnitude so.And combine with technological means such as pattern-recognition, image processing, can automatically identify the position that needs measure spectrum, realize the measurement of robotization, for on-line monitoring provides strong technical support.
The corresponding same or analogous parts of same or analogous label;
In accompanying drawing, describe position relationship for only for exemplary illustration, can not be interpreted as the restriction to this patent;
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in the protection domain of the claims in the present invention.
Claims (5)
1. an image spectrum sniffer, is characterized in that, comprises imaging lens group (1), catoptron (2), imaging len (3), area array CCD camera (4), optical fiber (5), fiber spectrometer (6) and video-stream processor (7);
Incident image signal forms incident optical signal by imaging lens group (1), through catoptron (2), reflexes to imaging len (3), focuses in area array CCD camera (4), forms image information, and shows (7) at video-stream processor;
Described catoptron (2) and optical axis are a angle, 90 ° of 0 ° of < a <; And the center of catoptron (2) has the aperture suitable with bare fibre, the bare fiber ends of optical fiber (5) is connected with catoptron (2) by aperture, another termination fiber spectrometer (6); Fiber spectrometer (6) is connected with video-stream processor (7).
2. image spectrum sniffer according to claim 1, is characterized in that, the bare fiber ends of optical fiber (5) is fixed in the aperture of catoptron by naked fine adapter (8).
3. image spectrum sniffer according to claim 2, is characterized in that, described image spectrum sniffer also comprises for naked fine adapter (8) being fixed on to the fixture (9) on catoptron (2).
4. image spectrum sniffer according to claim 1, is characterized in that, described video-stream processor (7) is computing machine.
5. according to the image spectrum sniffer described in claim 3 or 4, it is characterized in that, described optical fiber (5) is multimode optical fiber.
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| CN201410187794.7A CN103926000B (en) | 2014-05-06 | 2014-05-06 | A kind of image spectrum sniffer |
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| CN201410187794.7A CN103926000B (en) | 2014-05-06 | 2014-05-06 | A kind of image spectrum sniffer |
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Cited By (7)
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| CN104121989A (en) * | 2014-07-18 | 2014-10-29 | 清华大学 | Multi-grating vacuum ultraviolet spectrometer |
| CN104597011A (en) * | 2014-12-31 | 2015-05-06 | 北京博晖创新光电技术股份有限公司 | Excitation light source drift correction device and fluorescence spectrograph |
| CN104990626A (en) * | 2015-07-01 | 2015-10-21 | 天津大学 | Snapshot type high-spectrum imaging system realizing image segmentation by use of optical fiber bundle |
| CN105092030A (en) * | 2015-05-25 | 2015-11-25 | 中山大学 | Simple image spectrum detection apparatus |
| CN106198325A (en) * | 2016-06-27 | 2016-12-07 | 南开大学 | In a kind of on-line checking suspension molecule size distribution the measuring and analysis system of elastic scattering spectra dorsad and analyze method |
| CN107092055A (en) * | 2017-03-21 | 2017-08-25 | 中国科学院国家天文台南京天文光学技术研究所 | Astronomical telescope starlight, calibration optically coupled device |
| CN108267445A (en) * | 2018-01-08 | 2018-07-10 | 上海理工大学 | Three-dimensional two-photon mating plate is micro- and spectrum multi-modal imaging device and method |
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| JP2001264166A (en) * | 2000-03-21 | 2001-09-26 | Topcon Corp | Photometer |
| CN1697974A (en) * | 2001-12-11 | 2005-11-16 | 金伯利-克拉克环球有限公司 | Methods to view and analyze the results from diffraction-based diagnostics |
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| JP2001264166A (en) * | 2000-03-21 | 2001-09-26 | Topcon Corp | Photometer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121989A (en) * | 2014-07-18 | 2014-10-29 | 清华大学 | Multi-grating vacuum ultraviolet spectrometer |
| CN104121989B (en) * | 2014-07-18 | 2017-02-15 | 清华大学 | Multi-grating vacuum ultraviolet spectrometer |
| CN104597011A (en) * | 2014-12-31 | 2015-05-06 | 北京博晖创新光电技术股份有限公司 | Excitation light source drift correction device and fluorescence spectrograph |
| CN104597011B (en) * | 2014-12-31 | 2017-12-26 | 北京博晖创新光电技术股份有限公司 | Excitation light source drift correction device and XRF |
| CN105092030A (en) * | 2015-05-25 | 2015-11-25 | 中山大学 | Simple image spectrum detection apparatus |
| CN104990626A (en) * | 2015-07-01 | 2015-10-21 | 天津大学 | Snapshot type high-spectrum imaging system realizing image segmentation by use of optical fiber bundle |
| CN106198325A (en) * | 2016-06-27 | 2016-12-07 | 南开大学 | In a kind of on-line checking suspension molecule size distribution the measuring and analysis system of elastic scattering spectra dorsad and analyze method |
| CN107092055A (en) * | 2017-03-21 | 2017-08-25 | 中国科学院国家天文台南京天文光学技术研究所 | Astronomical telescope starlight, calibration optically coupled device |
| CN108267445A (en) * | 2018-01-08 | 2018-07-10 | 上海理工大学 | Three-dimensional two-photon mating plate is micro- and spectrum multi-modal imaging device and method |
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| CN103926000B (en) | 2016-03-02 |
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