CN102506754A - Confocal measurement device for simultaneously measuring surface appearance and color of object and using method thereof - Google Patents
Confocal measurement device for simultaneously measuring surface appearance and color of object and using method thereof Download PDFInfo
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- CN102506754A CN102506754A CN2011103521149A CN201110352114A CN102506754A CN 102506754 A CN102506754 A CN 102506754A CN 2011103521149 A CN2011103521149 A CN 2011103521149A CN 201110352114 A CN201110352114 A CN 201110352114A CN 102506754 A CN102506754 A CN 102506754A
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Abstract
The invention belongs to the field of precision measurement and relates to a confocal measurement device for simultaneously measuring surface appearance and color of an object and a using method thereof. The device comprises a standard white light source, a white-light confocal position measuring unit and a spectral color recognition unit which are connected with an optical fiber end part through an optical fiber respectively, wherein the optical fiber end part is clamped by an optical fiber clamping device; the optical fiber end part, a focusing optical system and a sample three-dimensional scanning platform are arranged in the same light path; and the sample three-dimensional scanning platform, the white-light confocal position measuring unit and the spectral color recognition unit are connected with a computer respectively. Due to a certain using method, when the profile of the object is measured, different color quality can be observed finely, so that a user rapidly, accurately and comprehensively masters appearance information of samples.
Description
Technical field
The invention belongs to the precision measurement field, relate to burnt measurement mechanism of the simultaneously-measured copolymerization of a kind of object surface appearance and color and method of application thereof.
Background technology
Outward appearance, the general designation of object surface shape pattern and color is an important attribute of object self.The human knowledge external world 80% comes from vision.See the initial instantaneous of object at human eye, 80% information source is in the color of object, and after 2 minutes, the perception ratio of color and object profile reaches 1:1.
The shape pattern, the important body surface characteristic of another of object or product.The outward appearance of daily necessities all is the key factor that influences its aesthetic property, usability, market share.For high-quality precision and sophisticated technology fields such as industry, traffic, scientific research, Aero-Space and national defence, the profile of part is just more important, usually is the major influence factors of this part time job performance.Large-scale industrial products or parts, the measuring technique of global shape mainly contain projection moire technology, light sectioning technology, laser triangulation and contact probe formula measuring technique.For micro parts; Especially MEMES device; The topography measurement permissible accuracy reaches nanometer level, and the profilometry that uses at present mainly comprises three coordinate measuring machine, confocal microscopy technology of profiling, white light interference technology of profiling, contact type probe measuring instrument and atomic force microscope etc.
On the other hand, color has become the important indicator of the many product qualities of evaluation.In many industries, the technical indicator of color is more and more important.Product colour measurement aberration identification inaccurate or diverse location is inaccurate, will cause substandard products or waste product, brings serious economy loss to enterprise.Color measurement instrument application industry is wider, can application and industry such as national defence, traffic, automobile, household electrical appliances, medicine, paint and plastics, and market outlook are very wide.The method of color measuring has visual method, Density Detection method, photoelectric integral method and spectral luminosity method.Wherein the measuring accuracy of spectral luminosity method is the authoritative method of generally acknowledging.But these methods mostly are spot measurements, are difficult to comprehensively react the surface color characteristic of object.
Comprehensively the measuring method of response sample surface topography and colouring information is necessary.Exterior appearance and color are the important indicators of the external attribute of decision product in the industrial design; In the metal material science, the pattern (comprising roughness) of fracture back fracture, color etc. are the important criterions of analysis of material mechanism of fracture; In chemical functional property granulate preparation process, control color, particle diameter of particle etc. simultaneously, can improve the application performance of particle; In the science and techniques of defence, functionalization components and parts or product needed apply cryptic coloration etc.The report that while Measuring Object exterior appearance and color are not arranged in academic newpapers and periodicals or the product information so far, as yet.
Summary of the invention
The purpose of this invention is to provide burnt measurement mechanism of the simultaneously-measured copolymerization of a kind of object surface appearance and color and method of application thereof, to overcome the deficiency that can not measure pattern or color simultaneously that prior art exists.
In order to overcome the problem that prior art exists, the present invention provides following technical scheme: a kind of burnt measurement mechanism of copolymerization that has exterior appearance and color measuring concurrently comprises the standard white radiant; The multimode light-conductive optic fibre; The optical fiber head end, optical fiber head clamper, Focused Optical system; Sample 3-D scanning platform; White light confocal location measurement unit, spectrum formula color recognition unit and computing machine, said standard white radiant, white light confocal location measurement unit, spectrum formula color recognition unit are connected with the optical fiber head end through optical fiber respectively; Optical fiber end is by optical fiber head clamper clamping; The light path setting altogether of optical fiber head end, Focused Optical system and sample 3-D scanning platform; Said sample 3-D scanning platform, white light confocal location measurement unit, spectrum formula color recognition unit are connected with computing machine respectively.
The method of application of said apparatus is to comprise the steps: successively
Sample is arranged on the sample 3-D scanning platform, and the light that the standard white radiant sends through optical fiber, is focused optical system and converges, and is focused into hot spot on the sample surface and is reflected; The former road of reflected light is returned, and gets into the core diameter in the optical fiber head end, behind optical fibre light splitting, gets into spectroscopy unit and position sensing unit respectively, obtains color and little elevation information at this some place of sample respectively; Sample 3-D scanning platform drives sample and does the 3-D scanning motion, just can reach the pattern of sample surfaces and the colouring information of corresponding point;
In the longitudinal scanning process, the light that the standard white radiant sends is converged by Focused Optical system through the optical fiber head end, and the interior Bao Xin of optical fiber this moment is equivalent to the beam expander pin hole in traditional confocal system; The reflected light of body surface A can return secondary entering optical fiber in former road, and the reflected light fibre cladding or the head clamp adapter of out of focus face stop, can't get back to light-conductive optic fibre, and this moment, the optical fibre packages core was as confocal detecting pinhole; Again arriving change surface below to the surface with focus point more than the surface location; Position sensing unit and spectrum formula color recognition unit have obtained one group of discrete signal respectively; These two groups of signals have identical discrete number, and are one to one, and the gained signal is sent into computing machine;
Computing machine is at first handled the confocal light intensity signal of position sensing unit, extracts its signal maximum, and confirms to obtain the lengthwise position of this signal; Then, computing machine keeps the corresponding spectrometer signal of this location point, according to the Color Reflectance of different wave length; Obtain X, Y, Z three primary colours values, press CIE Yxy by X, Y, Z again, CIE Lab formula calculates chromaticity coordinates xy; The CIELAB colorimetric parameter has obtained the colouring information at this some place of sample;
After accomplishing simple scan, the computer control objective table carries out 3-D scanning to object, has just realized the composite measurement of its outward appearance.
Device provided by the invention and method of application can be observed the quality of colour of difference fine and smoothly when contour of object is measured, make people fast, accurately, comprehensively grasp the appearance information of sample.Compared with prior art, the invention has the advantages that:
1 in the Measuring Object surface profile, has measured its colouring information, has solved the matching problem of profile and colouring information, and has improved efficiency of measurement greatly.
2 devices have kept the intrinsic high resolving power characteristic of confocal position sensor-based system, can select the spectrum photometric system according to color measuring resolution needs in addition, have increased the relevance grade of system.
3 confocal information acquisition units adopt standard fiber straight cutting interfaces, can match suitable collecting unit according to different measuring objects, for the seriation of measurement mechanism provides guarantee.
Description of drawings:
Fig. 1 is a measurement mechanism synoptic diagram of the present invention.
Wherein, 1-standard white radiant, 2-multimode light-conductive optic fibre, 3-optical fiber head end; 4-sample 3-D scanning platform, 5-white light confocal location measurement unit, 6-spectrum formula color recognition unit, 7-computing machine; The 8-sample, 9-Focused Optical system, 10-optical fiber head clamper.
Embodiment:
To combine accompanying drawing and embodiment that the present invention is described in detail below.
Referring to Fig. 1, a kind of burnt measurement mechanism of copolymerization that has exterior appearance and color measuring concurrently comprises standard white radiant 1; Multimode light-conductive optic fibre 2, optical fiber head end 3, optical fiber head clamper 10; Focused Optical system 9, sample 3-D scanning platform 4, white light confocal location measurement unit 5; Spectrum formula color recognition unit 6 and computing machine 7, said standard white radiant 1, white light confocal location measurement unit 5, spectrum formula color recognition unit 6 are connected with optical fiber head end 3 through optical fiber 2 respectively; Optical fiber end 3 is by optical fiber head clamper 10 clampings; Optical fiber head end 3, Focused Optical system 9 and the 4 light path settings altogether of sample 3-D scanning platform; Said sample 3-D scanning platform 4, white light confocal location measurement unit 5, spectrum formula color recognition unit 6 are connected with computing machine 7 respectively.
The method of application of generator of the present invention is to comprise the steps: successively
Sample 8 is arranged on the sample 3-D scanning platform 4, and the light that standard white radiant 1 sends through optical fiber 2, is focused optical system 9 and converges, and is focused into hot spot on sample 8 surfaces and is reflected; The former road of reflected light is returned, and gets into the core diameter of 3 li of optical fiber head ends, after optical fiber 2 beam split, gets into spectroscopy unit 6 and position sensing unit 5 respectively, obtains color and little elevation information at this some place of sample respectively; Sample 3-D scanning platform 4 drives sample and does the 3-D scanning motion, just can reach the pattern of sample surfaces and the colouring information of corresponding point;
In the longitudinal scanning process, the light that standard white radiant 1 sends is converged by Focused Optical system 9 through optical fiber head end 3, and this moment, optical fiber 2 interior Bao Xin were equivalent to the beam expander pin hole in traditional confocal system; The reflected light of body surface A can return secondary entering optical fiber 2 in former road, and the reflected light fibre cladding of out of focus face or head clamp adapter 10 stop, can't get back to light-conductive optic fibre, and this moment, the optical fibre packages core was as confocal detecting pinhole; Again arriving change surface below to the surface with focus point more than the surface location; Position sensing unit 5 has obtained one group of discrete signal respectively with spectrum formula color recognition unit 6; These two groups of signals have identical discrete number, and are one to one, and the gained signal is sent into computing machine 7;
After accomplishing simple scan, 4 pairs of objects of computing machine 7 control objective tables carry out 3-D scanning, have just realized the composite measurement of its outward appearance.
Claims (2)
1. burnt measurement mechanism of the copolymerization that has exterior appearance and color measuring concurrently; It is characterized in that: comprise standard white radiant (1), multimode light-conductive optic fibre (2), optical fiber head end (4); Optical fiber head clamper (10); Focused Optical system (9), sample 3-D scanning platform (4), white light confocal location measurement unit (5); Spectrum formula color recognition unit (6) and computing machine (7), said standard white radiant (1), white light confocal location measurement unit (5), spectrum formula color recognition unit (6) are connected with optical fiber head end (3) through optical fiber (2) respectively; Optical fiber end (3) is by optical fiber head clamper (10) clamping; The light path setting altogether of optical fiber head end (3), Focused Optical system (9) and sample 3-D scanning platform (4); Said sample 3-D scanning platform (4), white light confocal location measurement unit (5), spectrum formula color recognition unit (6) are connected with computing machine (7) respectively.
2. a kind of burnt measurement mechanism of copolymerization that has exterior appearance and color measuring concurrently according to claim 1, it is characterized in that: the method for application of said apparatus is to comprise the steps: successively
Sample (8) is arranged on the sample 3-D scanning platform (4), and the light that standard white radiant (1) sends through optical fiber (2), is focused optical system (9) and converges, and is focused into hot spot on sample (8) surface and is reflected; The former road of reflected light is returned, and gets into the core diameter of lining, optical fiber head end (3), after optical fiber (2) beam split, gets into spectroscopy unit (6) and position sensing unit (5) respectively, obtains color and little elevation information at this some place of sample respectively; Sample 3-D scanning platform (4) drives sample and does the 3-D scanning motion, just can reach the pattern of sample surfaces and the colouring information of corresponding point;
In the longitudinal scanning process, the light that standard white radiant (1) sends is converged by Focused Optical system (9) through optical fiber head end (3), and the interior Bao Xin of optical fiber (2) this moment is equivalent to the beam expander pin hole in traditional confocal system; The reflected light of body surface A can return secondary entering optical fiber (2) in former road, and the reflected light fibre cladding of out of focus face or head clamp adapter (10) stop, can't get back to light-conductive optic fibre, and this moment, the optical fibre packages core was as confocal detecting pinhole; Again arriving change surface below to the surface with focus point more than the surface location; Position sensing unit (5) and spectrum formula color recognition unit (6) have obtained one group of discrete signal respectively; These two groups of signals have identical discrete number; And be one to one, the gained signal is sent into computing machine (7);
Computing machine (7) is at first handled the confocal light intensity signal of position sensing unit, extracts its signal maximum, and confirms to obtain the lengthwise position of this signal; Then; Computing machine (7) keeps the corresponding spectrometer signal of this location point, according to the Color Reflectance of different wave length, obtains X, Y, Z three primary colours values; Press CIE Yxy by X, Y, Z again; CIE Lab formula calculates chromaticity coordinates xy, and the CIELAB colorimetric parameter has obtained the colouring information at this some place of sample;
After accomplishing simple scan, computing machine (7) control objective table (4) carries out 3-D scanning to object, has just realized the composite measurement of its outward appearance.
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| CN103777524A (en) * | 2014-01-20 | 2014-05-07 | 江苏大学 | Method and device for controlling black tea moderate fermentation based on visible spectrum technology |
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| CN105372264A (en) * | 2014-08-18 | 2016-03-02 | 政美应用股份有限公司 | Method for measuring patterned sapphire substrate |
| CN105372265A (en) * | 2014-08-18 | 2016-03-02 | 政美应用股份有限公司 | Optical measuring apparatus and method for measuring patterned sapphire substrate |
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| CN106931911A (en) * | 2017-04-01 | 2017-07-07 | 浙江协同光电科技有限公司 | The confocal line scanning device of white-light spectrum |
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| CN109373927A (en) * | 2018-09-28 | 2019-02-22 | 华侨大学 | A kind of confocal 3 D measuring method of colour and system |
| CN109521022A (en) * | 2019-01-23 | 2019-03-26 | 苏州鼎纳自动化技术有限公司 | Touch screen defect detecting device based on the confocal camera of line |
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