CN103411885A - Diffuse reflection illumination apparatus of multispectral imaging system - Google Patents
Diffuse reflection illumination apparatus of multispectral imaging system Download PDFInfo
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- CN103411885A CN103411885A CN2013103006518A CN201310300651A CN103411885A CN 103411885 A CN103411885 A CN 103411885A CN 2013103006518 A CN2013103006518 A CN 2013103006518A CN 201310300651 A CN201310300651 A CN 201310300651A CN 103411885 A CN103411885 A CN 103411885A
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Abstract
The illumination apparatus is the core member of a multispectral imaging system. According to the present invention, a diffuse reflection illumination apparatus similar to an integrating sphere is adopted, a metal hemisphere is selected as a structure device for producing a diffuse reflection effect performance, and a white diffuse emission layer with a certain thickness is coated on the inner wall of the metal hemisphere so as to achieve uniform lights; in a light box of the multispectral illumination system, lights emitted through a light source is subjected to a diffuse reflection effect of the illumination apparatus similar to the integrating sphere on the lights so as to achieve consistent illuminance uniformity of the lights in a visual field angle of a video camera or a camera, and the lights irradiating on the surface of a sample are subjected to diffuse emission to return to a CCD camera detector so as to obtain spectral image information of the sample; and with the apparatus, uniform illuminance in a camera visual field angle range during a multispectral imaging process can be achieved so as to replace the expensive integrating sphere to develop scientific research works.
Description
Technical field
The present invention is a kind of device of similar integrating sphere, espespecially a kind of diffuse illumination device that is uniformly distributed light that produces, and this device is under laboratory condition, the people is the optics diffuse device that can produce better effects of design and assembly.
Background technology
In order to reduce the optical detecting device because of the error that the distribution of incident light source is unequal and the incident light skew causes, conventional art improves the accuracy of measurement with optical diffusion sheet; Yet current most optical diffusion sheets for measurement have been integrated ball and have replaced.Multi-optical spectrum imaging system is mainly by means of the image information of ccd video camera collected specimens, and the characteristic parameters such as the pixel of image, gray-scale value directly affect obtaining image information, for this reason, the illuminance homogeneity will directly have influence on the picture quality height in ccd video camera field angle scope.In CCD field angle scope, requiring illuminance is evenly the gordian technique of multi-optical spectrum imaging system lighting device.At present for irreflexive scientific experiment device that can produce superior performance, mainly that integrating sphere is the product of representative, but, due to the monopolization of integrating sphere technology, so cause the integrating sphere cost quite expensive, be unfavorable for that scientific research is with cost-saving core concept.
Summary of the invention
Due to the high requirement of multi-optical spectrum imaging system to illuminance, for meeting this rigid requirement, how to design light source and make illuminance uniform-illumination in ccd video camera field angle scope will become a guardian technique problem of this multi-optical spectrum imaging system hardware components.
Core concept of the present invention is exactly to require under cost-saving prerequisite, adopts comparatively cheap experiment material to obtain requirement of experiment.The first guardian technique problem of apparatus of the present invention is to purchase the external structure of hemispheric metal hemisphere as diffuse device, adopt multiple coating with diffuse reflection optics performance to be coated in semisphere metal hemisphere inwall after drying, with illuminometer, carry out the optics illumination photometry, through great many of experiments contrast filter out take BaSO4 as the coating optics diffuse effect of primary raw material better, and price is comparatively cheap, is beneficial to the selection of experiment; An other guardian technique problem is which kind of ratio BaSO4 mixes with other auxiliary materials, can guarantee can firmly paste after coating is coated in metal inner surface, can guarantee again to have better diffuse reflection optics performance.The guardian technique difficult problem that need to solve for the multi-optical spectrum imaging system lighting device, by reference to the document of relevant diffuse reflection coating material with through repetition test repeatedly.
Technical solution of the present invention is as follows:
According to the lighting device of multi-optical spectrum imaging system of the present invention, comprise the parts such as the light box of multi-optical spectrum imaging system, multispectral diffuse device, light source, wherein, adopt a hemispheric metal hemisphere as multispectral unrestrained emitter; It is the coating of primary raw material that the diffuse device inwall has BaSO4; In described light box, be furnished with three halogen light source, be mutually 120 ° of angles.1) multispectral its effect of diffuse reflection experimental provision is similar to the high-performance diffuse reflection optics performance of integrating sphere, adopts the experimental provision of a hemispheric metal hemisphere as unrestrained emission, makes the illumination of light in ccd video camera field angle scope reach uniformity consistency; 2) in light box, arrange that three halogen light source are mutually 120 ° of angles, make uniform-illumination in ccd video camera field angle scope.
The material of described coating is M (BaSO4): M (PVA)=(93%～97%): (3%～5%).
Apparatus of the present invention have solved an above-mentioned needs difficult problem urgently to be resolved hurrily technically, make it in CCD field angle scope, keep uniform-illumination, and can also guarantee that the inside coating at metal hemisphere can be because not changing in experimentation, the constancy of experiment condition, accomplish the consistance of experimental situation condition, the repeatability of experimentation.Through repeatedly groping of great many of experiments, the key test condition parameter of this technology is tentatively grasped, multispectral hardware lighting device experiment condition is reliable and easy to be implemented, for multispectral hardware condition provides strong technical support, in order to be effectively applied to food, agricultural product quick nondestructive detection field, for related scientific research work provides technical support better.
The accompanying drawing explanation
Fig. 1: multispectral imaging apparatus schematic diagram
Fig. 2: the lighting device schematic diagram of multi-optical spectrum imaging system
Fig. 1 and explanation: 1 is support, and 2 is ccd video camera, and 3 is switching device of optical fiber, and 4 is multispectral casing, and 5 is multispectral diffuse device, and 6 is objective table, and 7 is sample to be checked.
Fig. 2 explanation: 2 is ccd video camera, and 5 is multispectral diffuse device, and 6 is objective table, and 7 is sample to be checked, and 8 is light source.
Embodiment
In the present embodiment, the lighting device of this multi-optical spectrum imaging system comprises light box 4, multispectral diffuse device 5, light source 8 parts (as shown in Figure 1) of multi-optical spectrum imaging system.In the present embodiment, adopt the semisphere metal construction as the light diffuse reflection experimental provision in the lighting device of multi-optical spectrum imaging system, with the angle that is mutually 120 ° of angles, arrange three halogen light source in multispectral light box, make its illuminance uniformity consistency (as shown in Figure 2) in multispectral ccd video camera 2 field angle scopes.Inner-wall spraying whitewash (BaSO4) at semisphere metal diffuse illumination device makes the semisphere metal device have good spectrum diffusive property and less spectral selectivity, lighting device after adopting the HT-1318 illuminometer to assembling carries out the measurement of intensity of illumination, in CCD collected by camera image field angle scope, the maximum relative deviation of intensity of illumination is for being less than 2.5%, for the collection of carrying out multispectral image information provides illuminance experiment condition comparatively uniformly.
The collocation method of coating: a kind of important auxiliary material of this coating is polyvinyl alcohol (PVA), this material is a kind of high molecular polymer, odorless, nontoxic, outward appearance is white or micro-yellow is cotton-shaped, sheet or pulverulent solids, its solubleness is lower, need under heating condition, dissolve according to certain procedures: 1) at room temperature institute's water requirement is added to dissolution kettle; The polyvinyl alcohol (PVA) that 2) will measure (PVA) slowly adds dissolution kettle and fully stirs, and stirring rate should be controlled at 100 rev/mins of left and right, soaks (45-65) minute after stopping stirring again; 3) should use Steam Heating, stir and be warming up to gradually suitable temperature (70-75 ℃) and keep in this temperature range until PVA dissolves fully, the consoluet time of PVA is probably 48 hours, to guarantee that during this period the water yield in still can not be volatilized fully, want certain interval of time to add a certain amount of moisture, prevent that the gelatinization phenomenon from appearring in PVA.4) when dissolving, bubble and belong to normal phenomenon, if can take the intermittent-heating alr mode when serious, or suitably reduce solution temperature and speed of agitator (can add appropriate defoamer such as octanol, tributyl phosphate etc. in case of necessity).5) sheet PVA dissolves while closing to an end, and as blowing at the bottom of the employing still, should open the still bottom valve, discharges a part of still bed material (can again drop into dissolution kettle dissolves), to guarantee that bottom valve is unimpeded.6) add coating primary raw material BaSO4 and PVA to carry out the coating material (M (BaSO4): M (PVA)=(93%～97%): (3%～5%)) that abundant mix and blend is configured to homogeneous.
Inner wall spraying method: 1. before the spraying, derust, polish with sand paper, then with gasoline, clean up, if surface irregularity, with the putty levelling and spray the white unglazed priming paint of one deck, last spray paint again; While 2. spraying, spray with sprayer, without hand spray, general dry one deck spray one deck, every layer thickness is 1.5m, spray is more than 10 times.After spraying finishes, usining high-power tungsten lamp as under thermal source, carrying out the drying processing, after abundant drying, with the sand paper of ultra-fine grain diameter, carry out the trickle grinding process of coating surface, guarantee that the coating surface thickness evenness is consistent.Ensure that the semisphere metal inner surface has good spectrum diffusing characteristic diffuser and less spectral selectivity.In addition, in the coating process of coating, operation should be noted: 1. closed-loop operation, and local exhaust, suggestion operations personnel wear self-suction dust filter mask, avoid producing dust, avoid contacting with reductive agent; While 2. carrying, want with light packs and gently unload, prevent that packing and container from damaging, be equipped with the emergency processing equipment that leaks, the container of turned letter may the residual harmful thing.
After the semisphere metal device completes, the angle of debugging light source, under the subtest of illuminometer, make it in ccd video camera field angle scope, reach the homogeneity of illuminance, the maximum relative deviation of its intensity of illumination is for being less than 2.5%, for multi-optical spectrum imaging system provides lighting device up to standard, obtain the image information of better quality.
Claims (4)
1. the lighting device of a multi-optical spectrum imaging system, comprise the light box of multi-optical spectrum imaging system, multispectral diffuse device, light source part, it is characterized in that:
Adopt a hemispheric metal hemisphere as multispectral unrestrained emitter; It is the coating of primary raw material that the diffuse device inwall has BaSO4; In described light box, be furnished with three halogen light source, be mutually 120 ° of angles.
2. the lighting device of multi-optical spectrum imaging system according to claim 1, it is characterized in that: described light source is 3 40W Halogen lamp LEDs.
3. the lighting device of multi-optical spectrum imaging system according to claim 1, it is characterized in that: the light sent by 3 Halogen lamp LEDs, through this multispectral diffuse device, make to produce the light of uniform-illumination in CCD viewing field of camera angular region, to complete the collection to the object image on objective table.
4. the lighting device of multi-optical spectrum imaging system according to claim 1, it is characterized in that: the material of described coating is M (BaSO4): M (PVA)=(93% ~ 97%): (3% ~ 5%).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121391A (en) * | 2017-06-12 | 2017-09-01 | 北京爱康泰科技有限责任公司 | For aiding in the device of test paper detection, the system and method for liquid detecting |
| CN108480114A (en) * | 2018-04-25 | 2018-09-04 | 江苏蔚金模塑股份有限公司 | A kind of auto parts and components spraying fixed frame |
| CN109682472A (en) * | 2017-10-19 | 2019-04-26 | 红塔烟草(集团)有限责任公司 | Dome light source |
| CN115185142A (en) * | 2022-07-11 | 2022-10-14 | 河南省元化医疗器械有限公司 | Tongue surface image collecting device |
| TWI824125B (en) * | 2020-01-14 | 2023-12-01 | 鴻海精密工業股份有限公司 | Character recognition device and equipment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2023812A (en) * | 1978-04-13 | 1980-01-03 | Strahlen Umweltforsch Gmbh | Photometer |
| JP2006275693A (en) * | 2005-03-29 | 2006-10-12 | Optrex Corp | Measurement device |
| CN201196700Y (en) * | 2008-02-05 | 2009-02-18 | 西安力源光电科技有限责任公司 | Emission device of near-infrared detection apparatus |
| CN201606750U (en) * | 2010-01-11 | 2010-10-13 | 深圳市日锋电子有限公司 | LED spot lamp |
| CN102115625A (en) * | 2009-12-31 | 2011-07-06 | 上海三思电子工程有限公司 | High-reflectivity diffuse reflection coating for LED lamp and preparation method thereof |
| CN102192832A (en) * | 2010-02-24 | 2011-09-21 | 大塚电子株式会社 | Optical measurement apparatus including hemispherical optical integrator |
| CN102721469A (en) * | 2012-06-14 | 2012-10-10 | 中国科学院自动化研究所 | Multispectral imaging system and method based on two cameras |
| CN102721651A (en) * | 2012-06-18 | 2012-10-10 | 浙江大学 | Detection method and system of water content in plant leaf based on multispectral image |
| JP2012227201A (en) * | 2011-04-15 | 2012-11-15 | Citizen Holdings Co Ltd | Inspection device and inspection method for semiconductor light-emitting device |
| CN102809429A (en) * | 2012-07-26 | 2012-12-05 | 中国科学院自动化研究所 | Multi-spectral imaging system and multi-spectral imaging method based on double cameras |
| CA2512981C (en) * | 2004-07-30 | 2013-03-19 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | Goniophotometer |
-
2013
- 2013-07-18 CN CN2013103006518A patent/CN103411885A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2023812A (en) * | 1978-04-13 | 1980-01-03 | Strahlen Umweltforsch Gmbh | Photometer |
| CA2512981C (en) * | 2004-07-30 | 2013-03-19 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | Goniophotometer |
| JP2006275693A (en) * | 2005-03-29 | 2006-10-12 | Optrex Corp | Measurement device |
| CN201196700Y (en) * | 2008-02-05 | 2009-02-18 | 西安力源光电科技有限责任公司 | Emission device of near-infrared detection apparatus |
| CN102115625A (en) * | 2009-12-31 | 2011-07-06 | 上海三思电子工程有限公司 | High-reflectivity diffuse reflection coating for LED lamp and preparation method thereof |
| CN201606750U (en) * | 2010-01-11 | 2010-10-13 | 深圳市日锋电子有限公司 | LED spot lamp |
| CN102192832A (en) * | 2010-02-24 | 2011-09-21 | 大塚电子株式会社 | Optical measurement apparatus including hemispherical optical integrator |
| JP2012227201A (en) * | 2011-04-15 | 2012-11-15 | Citizen Holdings Co Ltd | Inspection device and inspection method for semiconductor light-emitting device |
| CN102721469A (en) * | 2012-06-14 | 2012-10-10 | 中国科学院自动化研究所 | Multispectral imaging system and method based on two cameras |
| CN102721651A (en) * | 2012-06-18 | 2012-10-10 | 浙江大学 | Detection method and system of water content in plant leaf based on multispectral image |
| CN102809429A (en) * | 2012-07-26 | 2012-12-05 | 中国科学院自动化研究所 | Multi-spectral imaging system and multi-spectral imaging method based on double cameras |
Non-Patent Citations (2)
| Title |
|---|
| 刘秉岳: "双半积分球的设计", 《光学技术》 * |
| 熊利民等: "一种新型的半积分球辐射定标系统", 《现代计量测试》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121391A (en) * | 2017-06-12 | 2017-09-01 | 北京爱康泰科技有限责任公司 | For aiding in the device of test paper detection, the system and method for liquid detecting |
| CN109682472A (en) * | 2017-10-19 | 2019-04-26 | 红塔烟草(集团)有限责任公司 | Dome light source |
| CN108480114A (en) * | 2018-04-25 | 2018-09-04 | 江苏蔚金模塑股份有限公司 | A kind of auto parts and components spraying fixed frame |
| TWI824125B (en) * | 2020-01-14 | 2023-12-01 | 鴻海精密工業股份有限公司 | Character recognition device and equipment |
| CN115185142A (en) * | 2022-07-11 | 2022-10-14 | 河南省元化医疗器械有限公司 | Tongue surface image collecting device |
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Application publication date: 20131127 |