CN106885630A - A kind of method and device that spectral measurement is carried out based on color - Google Patents
A kind of method and device that spectral measurement is carried out based on color Download PDFInfo
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Abstract
The invention discloses a kind of method and device that spectral measurement is carried out based on color, belong to spectral measurement methodses field.Measurement apparatus of the invention include optical splitter, color sensor, algoritic module, display or data transmitter, optical splitter will treat that light-metering (polychromatic light) is divided into the monochromatic light of multiple long and narrow frequency ranges, after each monochromatic color being measured through color sensor, processed according to certain algorithm by algoritic module, each monochromatic wavelength and light intensity are obtained, then is shown by display or data transmitter transmission.The present invention carries out spectral measurement using color sensor first, propose the principle for carrying out accurate measurement to physical spectrum based on color, need not spectroscopic calibration and apparatus structure is extremely simplified during monochromatic light ray spectrometry again when there is each spectral measurement, the present invention can be used for monochromatic light ray spectrometry occasion, portable, foolproof spectral measurement occasion, need to obtain physical spectrum occasion, and the occasion that spectroscopic calibration is inconvenient based on color.
Description
Technical field
The invention belongs to spectral measurement methodses field, in particular, it is related to a kind of carry out spectral measurement based on color
Method and device, the present invention can be used for the occasion for needing to obtain physical spectrum based on color.
Background technology
Spectrum is polychromatic light by after the light splitting such as prism, grating, the monochromatic light opened by dispersion is by wavelength (or frequency) size
And the pattern being arranged in order, existing optical spectroscopy spectral measurement methodses, or fine rotational position and reality because of prism and grating
It is commonly present certain deviation between wavelength, or between causing the wavelength of line array CCD pixel sequence number and reality because of factors such as vibrations, thermal deformations
There is deviation, be required to re-scale during measurement every time, operation inconvenience.In addition, existing spectral measurement methodses, in measurement monochromatic light
When be also required to it is fully armed, such as optical spectroscopy spectral measurement methodses, measure monochromatic light when be also required to light-dividing device.This is in monochromatic light
Spectral measurement occasion (such as laser spectrum), significantly increases the weight and price of instrument.
At present, the measurement of other amounts is carried out based on color, existing many report is open [1,2] both at home and abroad, but there is no and be based on
Color directly carries out the instrument and equipment and technical scheme of accurate measurement to spectrum.
A kind of prior art " Spectral Reconstruction technology " [3,4], the technology is reconstructed based on color to spectrum, actually
A kind of metamerism is estimated based on color data.It is true when this metamerism for estimating shoots with the point in original picture
Real physical spectrum is different, such as a kind of quantum statistics method [5] that spectrum is directly estimated from RGB, but profit is in this way
The spectrum for estimating is not the actual physical spectrum of the point, and is only a kind of rational estimation.Therefore Spectral Reconstruction technology is difficult
To realize carrying out accurate measurement to spectrum.
Have been reported " a kind of method being identified to lambda1-wavelength " [6], the method is in order to develop intelligent many work(
Energy photometer, and two different photodiodes of spectral response characteristic are produced on a substrate, it is poor from its signal output
In lambda1-wavelength is identified.The method is indicated carries out light wave based on the two photoelectric tube with different spectral response characteristics
The feasibility of identification long.Weak point is that the method is only identified to the wavelength of monochromatic incident light, so far, there is not yet
To the report that the technology is used to carry out spectrum based on color accurate measurement.
Chinese patent " spectral measurement in biochemical and immunoassay based on color " (patent No. CN00813497),
This application case provides a kind of method that biochemical or immunity test analysis of biological material sample is carried out to analyte, described method
Make its display color related to the amount of analyte in sample including treatment sample.Measurement at least one is selected from this application case
The hue angle of aobvious color, colourity, saturation degree and brightness regulation color characteristics, the result for so determining can determine that analyte
Presence or absence or its concentration in the sample.But this application case is not based on color and carries out accurate measurement to spectrum, it is impossible to for base
Physical spectrum is obtained in color.
Prior art " a kind of optical spectroscopy spectral measurement methodses ", including rotate sub-ray spectrometer, the fixation of prism or grating
The CCD multichannel spectrometers (such as USB4000 spectrometers) of prism or grating beam splitting.
The sub-ray spectrometer of prism or grating is rotated, light intensity is measured using single photoelectric tube, according to rotation prism or grating
Fine rotational position obtain corresponding wavelength.One is commonly present between the wavelength of the fine rotational position and reality of prism or grating
Fixed deviation, needs to re-scale every time, operation inconvenience during measurement.Such as Chinese patent, " a kind of grating rotates sub-ray spectrometer light
Spectrum wavelength scaling method " (patent No. 2015101786355), this application case derives that optical wavelength and optics are compiled using grating equation
Relation between code device reading, theorize peg model；And carry out spectral wavelength demarcation using 2 method of solving equations；It is finally
Ensure the uniformity of different spectrometer measurement Same Wavelength grating object positions, initial wavelength positioning is carried out using calibrating parameters.
The CCD multichannel spectrometers of fixed prism or grating beam splitting, the slit of compound optical illumination is decomposed by beam splitting system
Be several monochromatic slit images, then by line array CCD measuring light intensity distribution and according to line array CCD pixel sequence number come determine correspondence
Wavelength (such as USB4000 spectrometers), this method that corresponding wavelength is determined according to pixel sequence number by line array CCD, meeting
Because of vibrations, there is deviation in the factor such as thermal deformation between causing the wavelength of pixel sequence number and reality.
Bibliography：
[1]、Nishidate Izumi,Yoshida Keiichiro,Kawauchi Satoko,Sato Shunichi,
Sato Manabu,In vivo imaging of scattering and absorption properties of
exposed brain using a digital red-green-blue camera[C],Progress in Biomedical
Optics and Imaging-Proceedings of SPIE, 2014,8928：1-10,Optical Techniques in
Neurosurgery,Neurophotonics and Optogenetics
[2]、Nishidate Izumi,Maeda Takaaki,Niizeki Kyuichi,Aizu Yoshihisa,
Estimation of melanin and hemoglobin using spectral reflectance images
Reconstructed from a digital RGB image by the Wiener estimation method [J],
Sensors, 2013,13 (6)：7902-7915
[3]、Nguyen Rang M.H.,Prasad Dilip K.,Brown Michael S.,Training-based
spectral reconstruction from a single RGB image[C],Computer Vision,ECCV 2014-
13th European Conference, Lecture Notes in Computer Science, 2014,8695 (7)：186-
201,
[4], Chen Yiyi, Xu Haisong, Zhang Xiandou, M.Ronnier Luo, Spectral Reconstruction research [J] based on digital camera,
Acta Optica, 2009,29 (5)：1416-1419
[5], Li Hongdong, Liu Jilin, Ye Xiuqing, Gu Weikang, directly estimate the quantum statistics method [J] of spectrum from RGB,
Journal of Image and Graphics, 1999,4 (A), No.2：115-119
[6], Wu Wenyuan, Gong Yanchun, Mao Yiming, Chen Guanglin, color sensor are used for optical wavelength and survey quantifier elimination [J],
Optoelectronic laser, 2003,14 (3)：285-287
The content of the invention
1. the invention technical problem to be solved
The problem of physical spectrum can not be obtained based on color for prior art, is entered based on color the invention provides one kind
The method and device of row spectral measurement.Polychromatic light to be measured is divided into the present invention monochromatic light of multiple long and narrow frequency ranges by optical splitter,
After color sensor measures each monochromatic color, algoritic module enters according to certain algorithm to the data that color sensor is measured
Row treatment, obtains each monochromatic light intensity and wavelength, i.e. spectrum.The present invention is fixed because of monochromatic light color with the relation of wavelength, no
Influenceed by factors such as fine rotational position, vibrations, thermal deformations, thus every time measurement when need not spectroscopic calibration again, in monochrome
Light, portable, foolproof spectral measurement occasion and the occasion that spectroscopic calibration is inconvenient again have remarkable advantage.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of method that spectral measurement is carried out based on color of the invention, its step is：
1) monochromatic light incidence color sensor；
2) color data is transmitted to algoritic module by color sensor；
3) algoritic module is according to operation result and International Commission on Illumination's CIE1931 chromaticity diagrams, with tabling look-up and interpolation method,
Obtain monochromatic light intensity and wavelength；
4) according to light intensity and the monochromatic wavelength for obtaining, display shows spectrum, or data transmitter sends spectrum.
Further, polychromatic light incidence optical splitter, the monochromatic light re-incident color sensor of optical splitter output.
Further, color sensor is analyzed to monochromatic light, obtains R, G, B data, and R, G, B data are transmitted to
Algoritic module；Wherein, obtaining R, G, the detailed process of B data is：Three kinds of filters of red, green, blue are integrated with color sensor chip
Light device, curtage signal corresponding with red, green, blue light intensity value is respectively obtained after monochromatic light incidence, is changed through power frequency
Or R, G, B data are obtained after AD conversion.
Further, algoritic module carries out computing to R, G, B data, obtains monochromatic light intensity I and x, y, z data,
Specific algorithm is：
First, monochromatic light intensity I and x, y, z data are obtained by R, G, B data according to following formula.
I=R+G+B
Secondly, according to International Commission on Illumination's CIE1931 chromaticity diagrams, x, y, z data application look-up table and interpolation method are obtained
To monochromatic wavelength.
Further, it is with the detailed process of look-up table and interpolation method acquisition wavelength value λ：If actual measurement is monochromatic red
Ratio (the x of primary colors and green primary color3,y3) between the two adjacent (x that wavelength interval is 1nm1,y1) and (x2,y2) between, i.e. x1＜ x3
＜ x2And y1＜ y3＜ y2, table look-up and understand (x1,y1) and (x2,y2) corresponding light wavelength lambda1With λ1+ 1nm, then survey monochromatic ripple
It is a length ofOr
A kind of device that spectral measurement is carried out based on color of the invention, including color sensor, algoritic module and display
Color data is given algoritic module by device, monochromatic light incidence color sensor, color sensor, and algoritic module is by wavelength and light intensity
Value gives display；
Described color sensor, can measure the color value of visible wavelength range, can distinguish wavelength interval and be not more than
Each monochromatic color of 1nm；
Described algoritic module, is digital operational circuit, can carry out above-mentioned computing and table look-up and difference arithmetic, and color is passed
The color data of sensor output is processed, and obtains each monochromatic wavelength and light intensity；
Described display, can carry out the figure shows or data display of spectrum.
A kind of device that spectral measurement is carried out based on color of the invention, including color sensor, algoritic module and data
Color data is given algoritic module by transmitter, monochromatic light incidence color sensor, color sensor, algoritic module by wavelength and
Light intensity value gives data transmitter；Described data transmitter is wireless data transmitter or cable data transmitter, Neng Gouxiang
Wireless network or cable network send spectroscopic data.
Further, the spectral measurement device also includes optical splitter, and polychromatic light is divided into multiple long and narrow frequencies by optical splitter
The monochromatic light of section, re-shoots color sensor；Described optical splitter can select the monochromator of sweep mechanism, and its scanning light splitting is obtained
Each monochromatic width for obtaining is not more than 1nm, the wave-length coverage covering visible light that its sweep mechanism can be scanned, and also can select and fixes
Grating beam splitting, its light splitting scope is visible light wave range, and each monochromatic light after its light splitting is evenly distributed, also can select fixed prism point
Light, its light splitting scope is visible light wave range, each monochromatic light uneven arrangement after its light splitting.
3. beneficial effect
Present invention contrast prior art has following innovative point：
(1) existing optical spectroscopy spectral measurement methodses, are divided into monochromatic light, further according to tilting mirror position using optical spectroscopy by polychromatic light
Or line array CCD pixel sequence number determines corresponding wavelength with the corresponding relation between wavelength, or because of prism and the fine rotational of grating
Be commonly present certain deviation between the wavelength of position and reality, or because the factors such as vibrations, thermal deformation cause line array CCD pixel sequence number with
There is deviation between actual wavelength, need to re-scale every time during measurement, operation inconvenience；The present invention uses color sensor first
Carry out spectral measurement, it is proposed that carry out the principle of accurate measurement to physical spectrum based on color, divided polychromatic light using optical splitter
Into the monochromatic light of multiple long and narrow frequency ranges, light intensity and wavelength are determined further according to certain algorithm, because of monochromatic light color and wavelength
Relation is fixed, the influence of the factor such as the true turned position of nonfertilization, vibrations, thermal deformation, therefore need not be re-scaled when measuring every time,
In portable, foolproof measurement occasion and spectroscopic calibration is inconvenient again special occasions (such as spectral detection automation, nothing
The special occasions such as people's airborne vehicle) there is remarkable advantage, the present invention can be used for monochromatic light ray spectrometry；
(2) existing spectral measurement methodses, it is impossible to provide actual physical spectrum based on color, the present invention uses certain algorithm
Color sensor is solved when monochromatic light intensity changes, R, G, B value can be changed, so as to cause the monochrome of Same Wavelength
Light, there is different R, G, B value problems, and the problem of optical wavelength how is worth to by color, so as to can be given truly based on color
Physical spectrum；
(3) existing spectral measurement methodses, fully armed, such as optical spectroscopy spectral measurement skill is also required to when monochromatic light is measured
Art, light-dividing device is also required to when monochromatic light is measured, and the present invention does not need optical splitter (such as Fig. 1 and Fig. 3) when monochromatic light is measured,
Structure is simplified very much, this at monochromatic light ray spectrometry occasion (such as laser spectrum), with notable in instruments weight and price
Advantage.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1 in the present invention；
Fig. 2 is the structural representation of embodiment 2 in the present invention；
Fig. 3 is the structural representation of embodiment 3 in the present invention；
Fig. 4 is the structural representation of embodiment 4 in the present invention；
Fig. 5 is International Commission on Illumination's CIE1931 chromaticity diagrams；
Fig. 6 is a kind of prism monochromator structural representation；
Fig. 7 is a kind of grating monochromator structural representation；
Fig. 8 is a kind of color sensor TCS230 spectral response curves；
Fig. 9 is a kind of spectral response curve of colored CCD；
In figure：1st, optical splitter；2nd, color sensor；3rd, algoritic module；4th, display；5th, data transmitter.
Specific embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Basic thought of the invention is to carry out accurate measurement to spectrum based on color, and monochromatic light is determined with certain algorithm
Wavelength.Specifically, will treat that light-metering (polychromatic light) is divided into the monochromatic light of multiple long and narrow frequency ranges with optical splitter, color sensor is measured
After each monochromatic color, algoritic module is processed the data that color sensor is measured according to certain algorithm, obtains each
Monochromatic light intensity and wavelength, i.e. spectrum.The optical spectroscopy spectral measurement methodses that such as background technology is mentioned are, it is necessary to according to tilting mirror position
Or line array CCD pixel sequence number determines corresponding wavelength with the corresponding relation between wavelength, the present invention has essential distinction with it.
Embodiment 1
The present embodiment uses structure shown in accompanying drawing 1, realizes the measurement and display of monochromatic light intensity and wavelength.
For the implementation of structure shown in accompanying drawing 1, including color sensor 2, algoritic module 3 and display 4.Wherein,
Color sensor 2 is using TCS230 or colored CCD (such as the INFINITY4-11C of Lumenera companies of Canada).Color is sensed
Color data is given algoritic module 3 by device 2, and algoritic module 3 uses single chip circuit or computer, is digital operational circuit, can
According to the algorithm that the present embodiment is proposed, the color data to the output of color sensor 2 is processed, and obtains each monochromatic wavelength
And light intensity, and be delivered to display 4 and carry out the figure shows or data display of spectrum, display 4 is shown using OCMJ graphic lcds
Show device.
Based on implementation shown in Fig. 1, the Spectroscopy procedures of the present embodiment are as follows：
1) monochromatic light incidence color sensor 2；
2) color sensor 2 carries out color measuring to monochromatic light, obtains R, G, B data, and R, G, B data are transmitted into algorithm
Module 3；Wherein, obtaining R, G, the detailed process of B data is：Three kinds of optical filterings of red, green, blue are integrated with color sensor chip
Device, monochromatic light incidence after respectively obtain curtage signal corresponding with red, green, blue light intensity value, through power frequency conversion or
AD conversion, obtains R, G, B data.
3) algoritic module 3 carries out computing according to certain algorithm to R, G, B data, obtain monochromatic light intensity I and x, y,
Z data, the algorithm is：
First, monochromatic light intensity I and x, y, z data are obtained by R, G, B data according to following formula.
I=R+G+B
Secondly, according to International Commission on Illumination's CIE1931 chromaticity diagrams, x, y, z data application look-up table and interpolation method are obtained
To monochromatic wavelength.
Fig. 5 is International Commission on Illumination's CIE1931 chromaticity diagrams.X coordinate is the ratio of red primaries in Fig. 5, and y-coordinate is green original
The ratio of color, coordinate z represents blue primary, and z can be released by x+y+z=1.What the chromaticity diagrams of CIE 1931 were given is that wavelength interval is
The discrete data of the ratio (x, y) of red primaries and green primary color corresponding to each wavelength lights of 1nm, the data in actual measurement are usually situated between
Between these discrete datas that can be tabled look-up, the present embodiment is with the detailed process that look-up table and interpolation method obtain wavelength value λ：
If surveying the ratio (x of monochromatic red primaries and green primary color3,y3) between the two adjacent (x that wavelength interval is 1nm1,y1) and (x2,
y2) between, i.e. x1＜ x3＜ x2And y1＜ y3＜ y2, table look-up and understand (x1,y1) and (x2,y2) corresponding light wavelength lambda1With λ1+1nm。
Then surveying monochromatic wavelength isOrThe measurement error of optical wavelength is less than 1nm.
4) according to the light intensity and wavelength for obtaining, display 4 shows spectrum.
The such scheme of the present embodiment is feasible：
1. monochromatic color is corresponded with its wavelength, and its wavelength resolution is up to 1nm.Fig. 5 is international lighting committee member
Can CIE1931 chromaticity diagrams.X coordinate is the ratio of red primaries in Fig. 5, and y-coordinate is the ratio of green primary color, and coordinate z represents blue primary
(can be released by x+y+z=1).
Each point on Fig. 5 mean camber lines represents spectrally pure color (color of each monochromatic wavelength), on this camber line, optical wavelength
It is one-to-one and three primary colors between, this shows：After polychromatic light resolves into a series of monochromatic light, by answering that each monochromatic light is obtained
Coloured light spectrum is unique, i.e., homochromy same spectrum.
The wavelength interval of CIE1931 chromaticity coordinates is 1nm, therefore the optical wavelength that look-up interpolations are obtained, its wavelength resolution
Rate is better than 1nm.
2. the simplification of light splitting technology structure, high precision are had.Such as rotary mirror type grating monochromator (such as Fig. 7, S1 are entrance slit),
Overall dimension only hand size, monochromatic bandwidth is up to below 1nm (HIMS30 series is up to 0.8nm).And for example rotary mirror type rib
(surface of such as Fig. 6, level crossing M2 is parallel with the bottom surface of prism P, is incorporated on same pedestal, and pedestal is with prism for mirror monochromator
The center O on base realizes length scanning for rotating shaft), easy in structure, monochromatic bandwidth is up to 1nm (such as YH.01-WDX prisms
Monochromator).Therefore, the monochromatic acquiring technology of the present embodiment is feasible.
3. existing color measurement technique is feasible：
1. the spectral response range of color sensor disclosure satisfy that measurement request.Spectral measurement is carried out based on color, it is desirable to
Color sensor can carry out color measuring to whole visible-range 380nm~780nm.The spectrum of the TCS230 selected in Fig. 8
Response range about 330nm~730nm, the spectral response range about 400nm~1000nm of the colored CCD selected in Fig. 9, therefore,
The spectral response range of color sensor can meet the requirement of visible ray.
2. the resolution ratio of color sensor disclosure satisfy that measurement request.The spectral response of color sensor TCS230 in Fig. 8
Scope about 330nm~730nm, such as with 1nm as smallest passage, then needs the wavelength channel number about 400 differentiated, and TCS230 has 3
Individual chrominance channel, each chrominance channel has the conversion accuracy of 10, even if being estimated with 8 conversion accuracies, distinguishable number of colours
It is 256 × 256 × 256 (being much larger than wavelength channel number 400), the colored CCD in Fig. 9 is also such.This shows color sensor
Resolution ratio be sufficient for the requirement of 1nm spectral measurement wavelength resolutions.
3. the light measured by color sensor, will not produce influence when light intensity changes spectrum is unchanged to spectral measurement.
It is known that when monochromatic light intensity changes, R, G, B value of color sensor can be changed, but Keep constant.Therefore, as measured to spectrum based on x, y, z, then the light for measuring
Spectrum is not influenceed by light intensity change.
In addition, using R+G+B=I as light intensity, although be not the exact value (relative light intensity) of light intensity, this distribution to spectrum
Without influence (spatial distribution be given be each wavelength relative light intensity).
4. color sensor can carry out spectral detection to uniform (or non-homogeneous) arrangement monochromatic light.
Using colored linear array or area array CCD as color sensor, uniform (or non-homogeneous) arrangement monochromatic light is examined
Survey, three finite length sequence Is corresponding with the color of R, G, B tri- can be obtainedR(k)、IG(k)、IB(k), k=0,1 ..., N-1, k correspondence
Each photosensitive unit.Following computing can be carried out：
I (k)=IR(k)+IG(k)+IB(k)
Wherein, I (k) is the light intensity of wavelength corresponding to k, and x (k) is the ratio of the red primaries of wavelength corresponding to k, and y (k) is k
The ratio of the green primary color of corresponding wavelength, z (k) represents blue primary, can be released by x (k)+y (k)+z (k)=1.
By x (k), y (k) with tabling look-up and interpolation algorithm, the wavelength corresponding to each photosensitive first k can be obtained, with I (k) shapes
Into spectrum.
Above-mentioned analysis shows, the color measurement technique of the present embodiment is feasible.
Embodiment 2
The present embodiment uses structure shown in accompanying drawing 2, realizes spectral measurement and the display of any polychromatic light.
For the implementation of structure shown in accompanying drawing 2, including optical splitter 1, color sensor 2, algoritic module 3 and display
4.Wherein, optical splitter 1 is selected and has the prism monochromator YH.01-WDX of sweep mechanism or have the grating monochromator of sweep mechanism
Polychromatic light is divided into HIMS30, optical splitter 1 monochromatic light of multiple long and narrow frequency ranges, monochromatic bandwidth up to 1nm, its sweep mechanism
The wave-length coverage covering visible light that can be scanned, also can select fixed grating spectral, and its light splitting scope is visible light wave range, its light splitting
Each monochromatic light afterwards is evenly distributed, also can select fixed prism light splitting, and its light splitting scope is visible light wave range, each after its light splitting
Monochromatic light uneven arrangement.Each monochromatic color value is measured by color sensor 2, and color sensor 2 uses TCS230 or coloured silk
Color CCD (such as the INFINITY4-11C of Lumenera companies of Canada).Color value is given algoritic module 3 by color sensor 2,
Algoritic module 3 uses single chip circuit or computer, is digital operational circuit, can be according to algorithm proposed by the present invention, to color
The color data of the output of sensor 2 is processed, and obtains each monochromatic wavelength and light intensity, send display 4 to carry out the figure of spectrum
Shape shows or data display that display 4 uses OCMJ graphic lcds.
The Spectroscopy procedures of the present embodiment are basic with embodiment 1, except that, first by polychromatic light incidence optical splitter 1,
Optical splitter 1 exports each monochromatic light, then by monochromatic light incidence color sensor 2.
Embodiment 3
The present embodiment uses structure shown in accompanying drawing 3, realizes the measurement and transmission of monochromatic light intensity and wavelength.
For the implementation of structure shown in accompanying drawing 3, including color sensor 2, algoritic module 3 and data transmitter 5.Its
In, color sensor 2 is using TCS230 or colored CCD (such as the INFINITY4-11C of Lumenera companies of Canada).Color is passed
Color value is given algoritic module 3 by sensor 2, and algoritic module 3 uses single chip circuit or computer, is digital operational circuit, can
According to algorithm proposed by the present invention, the color data to the output of color sensor 2 is processed, and obtains monochromatic wavelength and light
By force, send data transmitter 5 carries out data is activation to wireless network or cable network, and data transmitter 5 is sent using wireless data
Device nRF24L01 or cable data transmitter RS-485.
The Spectroscopy procedures of the present embodiment are basic with embodiment 1, except that, the monochromatic light that algoritic module 3 is obtained
Light intensity and wavelength, spectroscopic data is sent from data transmitter 5 to wireless network or cable network.
Embodiment 4
The present embodiment uses structure shown in accompanying drawing 4, realizes the spectral measurement of any polychromatic light and sends.
For the implementation of structure shown in accompanying drawing 4, including optical splitter 1, color sensor 2, algoritic module 3 and data hair
Send device 5.Wherein, optical splitter 1 is selected and has the prism monochromator YH.01-WDX of sweep mechanism or have the grating monochromator of sweep mechanism
Polychromatic light is divided into HIMS30, optical splitter 1 monochromatic light of multiple long and narrow frequency ranges, narrow monochromatic bandwidth up to 1nm, its scanning machine
The wave-length coverage covering visible light that structure can be scanned, also can select fixed grating spectral, and its light splitting scope is visible light wave range, its point
Each monochromatic light after light is evenly distributed, also can select fixed prism light splitting, and its light splitting scope is visible light wave range, after its light splitting
Each monochromatic light uneven arrangement.Each monochromatic color value is measured by color sensor 2, color sensor 2 using TCS230 or
Colored CCD (such as the INFINITY4-11C of Lumenera companies of Canada).Color value is given algoritic module by color sensor 2
3, algoritic module 3 uses single chip circuit or computer, is digital operational circuit, can be according to algorithm proposed by the present invention, to face
The color data of the output of colour sensor 2 is processed, and obtains each monochromatic wavelength and light intensity, send data transmitter 5 to wireless
Network or cable network carry out data is activation, and data transmitter 5 is sent out using wireless data transmitter nRF24L01 or cable data
Send device RS-485.
The Spectroscopy procedures of the present embodiment are basic with embodiment 3, except that, first by polychromatic light incidence optical splitter 1,
Optical splitter 1 exports each monochromatic light, then by monochromatic light incidence color sensor 2.
What deserves to be explained is, different from the existing optical spectroscopy spectral measurement methodses that background technology is mentioned, will using optical spectroscopy
Polychromatic light is divided into monochromatic light, corresponding to determine with the corresponding relation between wavelength further according to tilting mirror position or line array CCD pixel sequence number
Wavelength.Polychromatic light is divided into monochromatic light by the present invention using optical spectroscopy, and wavelength is determined further according to certain algorithm.Existing light splitting
Method spectral measurement methodses, or because the fine rotational position and reality of prism and grating wavelength between be commonly present certain deviation, or
There is deviation between causing the wavelength of line array CCD pixel sequence number and reality because of factors such as vibrations, thermal deformations, need weight during measurement every time
New calibration, operation inconvenience.The present invention is fixed because of monochromatic light color with the relation of wavelength, and the true turned position of nonfertilization, vibrations, heat become
The factors such as shape influence, therefore need not be re-scaled when measuring every time, and this has notable in the measurement occasion such as portable, foolproof
Advantage.
On the other hand, different from existing spectral measurement methodses, it is impossible to provide actual physical spectrum based on color, the present invention can
Actual physical spectrum is provided based on color.And be based on color and provide actual physical spectrum, it is primarily present following difficult point：
First, when monochromatic light intensity changes, R, G, B value can be changed color sensor, so as to cause Same Wavelength
Monochromatic light, have different R, G, B value problems, the present invention is solved this problem in that using certain algorithm.
Secondly, how optical wavelength problem is worth to by color.The present invention is using International Commission on Illumination's CIE1931 chromaticities
Figure, using tabling look-up and linear interpolation algorithm, solves this problem in that, be worth to optical wavelength by color, wavelength resolution is reachable
1nm。
Existing spectral measurement methodses, fully armed, such as optical spectroscopy spectral measurement methodses are also required to when monochromatic light is measured,
Light-dividing device is also required to during measurement monochromatic light.The present invention does not need optical splitter (such as Fig. 1) when monochromatic light is measured, and structure is very smart
Letter.This at monochromatic light ray spectrometry occasion (such as laser spectrum), with the remarkable advantage in instruments weight and price.
Specific embodiment of the invention is described above in association with accompanying drawing, but these explanations can not be understood to limitation
The scope of the present invention, protection scope of the present invention is limited by appended claims, any in the claims in the present invention base
Change on plinth is all protection scope of the present invention.
Claims (10)
1. a kind of method that spectral measurement is carried out based on color, its step is：
1) monochromatic light incidence color sensor (2)；
2) color data is transmitted to algoritic module (3) by color sensor (2)；
3) algoritic module (3) is according to operation result and International Commission on Illumination's CIE1931 chromaticity diagrams, with tabling look-up and interpolation method,
Obtain monochromatic wavelength；
4) according to light intensity and the monochromatic wavelength for obtaining, display (4) shows spectrum.
2. a kind of method that spectral measurement is carried out based on color according to claim 1, it is characterised in that：Polychromatic light is incident
Optical splitter (1), the monochromatic light of optical splitter (1) output re-shoots color sensor (2).
3. a kind of method that spectral measurement is carried out based on color, its step is：
1) monochromatic light incidence color sensor (2)；
2) color data is transmitted to algoritic module (3) by color sensor (2)；
3) algoritic module (3) is according to operation result and International Commission on Illumination's CIE1931 chromaticity diagrams, with tabling look-up and interpolation method,
Obtain monochromatic wavelength；
4) according to light intensity and the monochromatic wavelength for obtaining, data transmitter (5) sends spectrum.
4. a kind of method that spectral measurement is carried out based on color according to claim 3, it is characterised in that：Polychromatic light is incident
Optical splitter (1), the monochromatic light of optical splitter (1) output re-shoots color sensor (2).
5. a kind of method that spectral measurement is carried out based on color according to claim any one of 1-4, it is characterised in that：Face
Colour sensor (2) is analyzed to monochromatic light, obtains R, G, B data, and R, G, B data are transmitted into algoritic module (3)；Wherein,
Obtaining R, G, the detailed process of B data is：Three kinds of filters of red, green, blue are integrated with color sensor chip, monochromatic light is incident
After respectively obtain curtage signal corresponding with red, green, blue light intensity value, through power frequency conversion or AD conversion after obtain R,
G, B data.
6. a kind of method that spectral measurement is carried out based on color according to claim 5, it is characterised in that：Algoritic module
(3) computing is carried out to R, G, B data, obtains monochromatic light intensity I and x, y, z data, further computing obtains monochromatic
Wavelength, specific algorithm is：
First, monochromatic light intensity I and x, y, z data are obtained by R, G, B data according to following formula.
I=R+G+B
Secondly, according to International Commission on Illumination's CIE1931 chromaticity diagrams, list is obtained to x, y, z data application look-up table and interpolation method
The wavelength of coloured light.
7. a kind of method that spectral measurement is carried out based on color according to claim 6, it is characterised in that：With look-up table
The detailed process for obtaining wavelength value λ with interpolation method is：If surveying the ratio (x of monochromatic red primaries and green primary color3,y3) between
Wavelength interval is the two adjacent (x of 1nm1,y1) and (x2,y2) between, i.e. x1＜ x3＜ x2And y1＜ y3＜ y2, table look-up and understand (x1,
y1) and (x2,y2) corresponding light wavelength lambda1With λ1+ 1nm, then surveying monochromatic wavelength isOr
8. a kind of device that spectral measurement is carried out based on color, it is characterised in that：Including color sensor (2), algoritic module (3)
With display (4), monochromatic light incidence color sensor (2), color data given algoritic module (3) by color sensor (2), is calculated
Wavelength and light intensity value are given display (4) by method module (3)；
Described color sensor (2), can measure the color value of visible wavelength range, can distinguish wavelength interval and be not more than
Each monochromatic color of 1nm；
Described algoritic module (3), is digital operational circuit, can carry out above-mentioned computing and table look-up and difference arithmetic, and color is passed
The color data of sensor (2) output is processed, and obtains each monochromatic wavelength and light intensity；
Described display (4), can carry out the figure shows or data display of spectrum.
9. a kind of device that spectral measurement is carried out based on color according to claim 8, it is characterised in that：Passed including color
Sensor (2), algoritic module (3) and data transmitter (5), monochromatic light incidence color sensor (2), color sensor (2) is by face
According to algoritic module (3) is given, wavelength and light intensity value are given data transmitter (5) to chromatic number by algoritic module (3)；Described data hair
It is wireless data transmitter or cable data transmitter to send device (5), can send spectroscopic data to wireless network or cable network.
10. a kind of device that spectral measurement is carried out based on color according to claim 8 or claim 9, it is characterised in that：The light
Spectrometry device also includes optical splitter (1), and polychromatic light is divided into optical splitter (1) monochromatic light of multiple long and narrow frequency ranges, re-shoots face
Colour sensor (2)；Described optical splitter (1) can select the monochromator for having sweep mechanism, each monochromatic light that its scanning light splitting is obtained
Width be not more than 1nm, the wave-length coverage covering visible light that its sweep mechanism can be scanned, also can select fixed grating spectral, its
Light splitting scope is visible light wave range, and each monochromatic light after its light splitting is evenly distributed, also can select fixed prism light splitting, its light splitting model
It is visible light wave range to enclose, each monochromatic light uneven arrangement after its light splitting.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560831A (en) * | 2017-08-29 | 2018-01-09 | 京东方科技集团股份有限公司 | A kind of color parameter measurement apparatus and its measuring method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013191082A1 (en) * | 2012-06-22 | 2013-12-27 | 東レ株式会社 | Colour filter and display device |
| CN103712693A (en) * | 2012-09-28 | 2014-04-09 | 亚旭电脑股份有限公司 | Color recognition method and device |
-
2017
- 2017-02-17 CN CN201710085325.8A patent/CN106885630A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013191082A1 (en) * | 2012-06-22 | 2013-12-27 | 東レ株式会社 | Colour filter and display device |
| CN103712693A (en) * | 2012-09-28 | 2014-04-09 | 亚旭电脑股份有限公司 | Color recognition method and device |
Non-Patent Citations (1)
| Title |
|---|
| 周圣军: ""LED光电参数在线测试分选系统研究"", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560831A (en) * | 2017-08-29 | 2018-01-09 | 京东方科技集团股份有限公司 | A kind of color parameter measurement apparatus and its measuring method |
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