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CN108240862A - High-precision self-correcting tristimulus color analysis and chromatic value acquisition method - Google Patents

High-precision self-correcting tristimulus color analysis and chromatic value acquisition method Download PDF

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Publication number
CN108240862A
CN108240862A CN201810036158.2A CN201810036158A CN108240862A CN 108240862 A CN108240862 A CN 108240862A CN 201810036158 A CN201810036158 A CN 201810036158A CN 108240862 A CN108240862 A CN 108240862A
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CN
China
Prior art keywords
tristimulus values
tristimulus
spectrometer
dsp
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810036158.2A
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Chinese (zh)
Inventor
赵正
梁红军
秦明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Jingce Electronic Group Co Ltd
Wuhan Jingce Electronic Technology Co Ltd
Original Assignee
Wuhan Jingce Electronic Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Jingce Electronic Group Co Ltd filed Critical Wuhan Jingce Electronic Group Co Ltd
Priority to CN201810036158.2A priority Critical patent/CN108240862A/en
Publication of CN108240862A publication Critical patent/CN108240862A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/506Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors measuring the colour produced by screens, monitors, displays or CRTs
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J2003/467Colour computing

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

The invention discloses a kind of high-precision self-correcting tristimulus color analysis and chromatic value acquisition methods, and including camera lens, camera lens is connect by optical fiber with spectrometer and tristimulus values sensor respectively, and the spectrometer and the equal messenger line of tristimulus values sensor are connect with DSP;Spectrometer is transmitted to DSP for acquiring spectroscopic data M;Tristimulus values sensor is used to acquire original tristimulus values S transport to DSP;The original tristimulus values S that DSP is used to acquire with tristimulus values sensor after the spectroscopic data M of spectrometer collection is converted carries out operation, correction parameter C is obtained, the original tristimulus values S that tristimulus values sensor acquires is converted to the tristimulus values DS after correction further according to correction parameter C.The technology advantage and disadvantage of integrated spectral instrument colorimeter and tristimulus color analysis of the present invention:While tristimulus color analysis accuracy benefits can be played, the advantages of measuring at a high speed can be also taken into account.

Description

High-precision self-correcting tristimulus color analysis and chromatic value acquisition method
Technical field
The present invention relates to liquid crystal module coloration correcting technology field, in particular to a kind of high-precision self-correcting tristimulus values coloration Meter and chromatic value acquisition method.
Background technology
Liquid crystal module generates the chromatic value that producer corrects display module by colorimeter or spectrometer.Spectrometer feature is Speed is slow, and precision is high.Colorimeter is realized usually using tristimulus values sensor.Tristimulus values sensor speed is fast, and precision is relatively low. The two respectively has an advantage and disadvantage, and the equipment required in practical module production process must possess that speed is fast, advantage with high accuracy.Market The contradiction between demand and physical device to equipment is apparent.
Invention content
Technical problems based on background technology, the present invention propose a kind of high-precision self-correcting tristimulus color analysis and Chromatic value acquisition method can correct the three primary colors spectrum parameter of channels all in colorimeter, colorimeter is rapidly completed Manufacture and periodically correction demand improve colorimeter production and maintenance efficiency and quality.
In order to achieve the above objectives, a kind of high-precision self-correcting tristimulus color analysis that the present invention refers to, special character exist In including camera lens, the camera lens is connect by optical fiber with spectrometer and tristimulus values sensor respectively, the spectrometer and three thorns Swash the value equal messenger line of sensor to connect with DSP;
The spectrometer is transmitted to DSP for acquiring spectroscopic data M;
The tristimulus values sensor is used to acquire original tristimulus values S transport to DSP;
The DSP is used for the original acquired after the spectroscopic data M of spectrometer collection is converted with tristimulus values sensor Beginning tristimulus values S carries out operation, obtains correction parameter C, acquire tristimulus values sensor further according to correction parameter C original three Values S is converted to the tristimulus values DS after correction.
Further, the tristimulus values sensor include tristimulus values filter plate X Y Z, silicon photo diode, modulus turn Change circuit.
Further, the optical fiber is one-to-two optical fiber, is sensed with same diameter respectively at spectrometer and tristimulus values Device connects.
Further, the camera lens is collimating mirror.
A kind of chromatic value acquisition method based on above-mentioned high-precision self-correcting tristimulus color analysis, is characterized in that, Including initialization procedure and gatherer process, the step of initialization procedure, includes:
1) incident light that liquid crystal module is sent out through camera lens and optical fiber while enters spectrometer and tristimulus values sensor;
2) the spectrometer collection spectroscopic data M, original tristimulus values S transport is extremely during tristimulus values sensor acquisition DSP;
3) spectroscopic data M is calculated bid by the DSP according to the THE SPECTRAL RESPONSE OF THE HUMAN EYE function XYZ that 1931CIE standards define Quasi- tristimulus values DE obtains correction parameter C further according to standard tristimulus values DE and original tristimulus values S;
4) DSP corrects the original tristimulus values S that tristimulus values sensor acquires according to correction parameter C, obtains Tristimulus values DS after to correction;
The step of gatherer process, includes:
5) spectrometer is closed;
6) the original tristimulus values S of continuous acquisition is carried out using the tristimulus values sensor, and gathered data is transmitted to Continuous original tristimulus values S outputs are the tristimulus values DS after correction by DSP, the DSP.
Preferably, the computational methods of the standard tristimulus values DE are DE=M*XYZ, and XYZ is what 1931CIE standards defined THE SPECTRAL RESPONSE OF THE HUMAN EYE function;The computational methods of the correction parameter C are C=DE/S, the meter of the tristimulus values DS after the correction Calculation method is DS=S*C.
The advantage of the invention is that:
1) the technology advantage and disadvantage of integrated spectral instrument colorimeter and tristimulus color analysis of the present invention:Tristimulus values can be played While colorimeter accuracy benefits, the advantages of measuring at a high speed can be also taken into account;
2) present invention has the accuracy benefits that traditional tristimulus values does not have, and it is excellent to be provided simultaneously with the speed that spectrometer does not have Gesture, while the existing assembly line wire body for having old tristimulus color analysis can be transformed by this patent, avoid expensive device more The flat cost of expense newly brought to product has high cost effectiveness.
Description of the drawings
Fig. 1 is a kind of structure diagram of high-precision self-correcting tristimulus color analysis of the present invention.
Fig. 2 is the flow chart of chromatic value acquisition method of the present invention.
In figure:Camera lens 1, optical fiber 2, spectrometer 3, tristimulus values sensor 4, signal wire 5, DSP6.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments, but the embodiment should not be construed as pair The limitation of the present invention.
The present invention proposes a kind of high-precision self-correcting tristimulus color analysis, and including camera lens 1, camera lens 1 is collimating mirror.Camera lens 1 It is connect respectively with spectrometer 3 and tristimulus values sensor 4 by optical fiber 2, optical fiber 2 is one-to-two optical fiber, is distinguished with same diameter It is connected in spectrometer 3 and tristimulus values sensor 4.Spectrometer 3 and 4 equal messenger line 5 of tristimulus values sensor are connect with DSP6.
Spectrometer 3 is transmitted to DSP6 for acquiring spectroscopic data.
Tristimulus values sensor 4 is transmitted to DSP6 for acquiring tristimulus values.
DSP6 is used for three thorns acquired after the spectroscopic data that spectrometer 3 acquires is converted with tristimulus values sensor 4 Sharp value is compared, and calculates correction parameter, and the original tristimulus values acquired to tristimulus values sensor 4 is corrected.
Tristimulus values sensor 4 include tristimulus values filter plate X Y Z, silicon photo diode, analog to digital conversion circuit.
The method that chromatic value acquisition is carried out using above-mentioned high-precision self-correcting tristimulus color analysis, as shown in Fig. 2, including just Beginning process and gatherer process:
The step of initialization procedure, includes:
1) incident light that liquid crystal module is sent out through camera lens 1 and optical fiber 2 while enters spectrometer 3 and tristimulus values sensor 4.
2) spectrometer 3 acquires spectroscopic data M, is transmitted to DSP6.
3) tristimulus values sensor 4 acquires original tristimulus values S transport to DSP6.
4) the THE SPECTRAL RESPONSE OF THE HUMAN EYE function XYZ that spectroscopic data M is defined according to 1931CIE standards is calculated standard three by DSP6 Values DE, DE=M*XYZ obtain correction parameter C, C=DE/S further according to standard tristimulus values DE and original tristimulus values S;
5) DSP6 corrects the original tristimulus values S that tristimulus values sensor 4 acquires according to correction parameter C, obtains Tristimulus values DS, DS=S*C after correction.
The step of gatherer process, includes:
6) spectrometer 3 is closed;
7) the original tristimulus values S of continuous acquisition is carried out using tristimulus values sensor 4, and gathered data is transmitted to Continuous original tristimulus values S outputs are the tristimulus values DS after correction by DSP6, DSP6.This step is repeated after screen switching, Quick measurement can be realized.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited in upper The specific real mode stated, above-mentioned specific embodiment is only schematical, is not restricted, the common skill of this field Art personnel are not departing from present inventive concept and scope of the claimed protection under the enlightenment of the present invention, can be with The specific transformation of many forms is made, these all belong to the scope of protection of the present invention interior.

Claims (6)

1. a kind of high-precision self-correcting tristimulus color analysis, it is characterised in that:Including camera lens (1), the camera lens (1) passes through optical fiber (2) it is connect respectively with spectrometer (3) and tristimulus values sensor (4), the spectrometer (3) and tristimulus values sensor (4) are equal Messenger line (5) is connect with DSP (6);
The spectrometer (3) is transmitted to DSP (6) for acquiring spectroscopic data M;
The tristimulus values sensor (4) is for acquiring original tristimulus values S transport to DSP (6);
Spectroscopic data M of the DSP (6) for spectrometer (3) to be acquired is acquired after being converted with tristimulus values sensor (4) Original tristimulus values S carry out operation, obtain correction parameter C, further according to correction parameter C by tristimulus values sensor (4) acquire Original tristimulus values S be converted to correction after tristimulus values DS.
2. high-precision self-correcting tristimulus color analysis according to claim 1, it is characterised in that:The tristimulus values sensing Device (4) including tristimulus values filter plate X Y Z, silicon photo diode, analog to digital conversion circuit.
3. high-precision self-correcting tristimulus color analysis according to claim 1, it is characterised in that:The optical fiber (2) is one Divide two optical fiber, connected with same diameter respectively at spectrometer (3) and tristimulus values sensor (4).
4. high-precision self-correcting tristimulus color analysis according to claim 1, it is characterised in that:Subject to the camera lens (1) Straight mirror.
5. a kind of coloration of high-precision self-correcting tristimulus color analysis according to any claim in Claims 1 to 4 It is worth acquisition method, it is characterised in that:Including initialization procedure and gatherer process, the step of initialization procedure, includes:
1) incident light that liquid crystal module is sent out through camera lens (1) and optical fiber (2) while enters spectrometer (3) and tristimulus values sensor (4);
2) spectrometer (3) the acquisition spectroscopic data M, original tristimulus values S transport when the tristimulus values sensor (4) acquires To DSP (6);
3) the THE SPECTRAL RESPONSE OF THE HUMAN EYE function XYZ that spectroscopic data M is defined according to 1931CIE standards is calculated standard by the DSP (6) Tristimulus values DE obtains correction parameter C further according to standard tristimulus values DE and original tristimulus values S;
4) DSP (6) corrects the original tristimulus values S that tristimulus values sensor (4) acquires according to correction parameter C, Tristimulus values DS after being corrected;
The step of gatherer process, includes:
5) spectrometer (3) is closed;
6) the original tristimulus values S of continuous acquisition is carried out using the tristimulus values sensor (4), and gathered data is transmitted to Continuous original tristimulus values S outputs are the tristimulus values DS after correction by DSP (6), the DSP (6).
6. the chromatic value acquisition method of high-precision self-correcting tristimulus color analysis according to claim 5, it is characterised in that: The computational methods of the standard tristimulus values DE are DE=M*XYZ, and XYZ is the THE SPECTRAL RESPONSE OF THE HUMAN EYE letter that 1931CIE standards define Number;The computational methods of the correction parameter C are C=DE/S, and the computational methods of the tristimulus values DS after the correction are DS=S* C。
CN201810036158.2A 2018-01-15 2018-01-15 High-precision self-correcting tristimulus color analysis and chromatic value acquisition method Pending CN108240862A (en)

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Application Number Priority Date Filing Date Title
CN201810036158.2A CN108240862A (en) 2018-01-15 2018-01-15 High-precision self-correcting tristimulus color analysis and chromatic value acquisition method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119779486A (en) * 2025-03-10 2025-04-08 上海唯视锐光电技术有限公司 A method for measuring imaging chromaticity and a measuring device based on the method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101788341A (en) * 2008-08-04 2010-07-28 香港纺织及成衣研发中心 Device and method for detecting fabric color
CN102124310A (en) * 2008-08-22 2011-07-13 柯尼卡美能达光电株式会社 Photometric/colorimetric device
CN102735339A (en) * 2011-04-01 2012-10-17 爱色丽欧洲公司 Color measuring device calibration
US20140176948A1 (en) * 2000-04-11 2014-06-26 Rah Color Technologies Llc Methods and apparatus for calibrating a color display
CN104574371A (en) * 2014-12-20 2015-04-29 中国科学院西安光学精密机械研究所 High dynamic color digital camera characterization calibration method
CN105352598A (en) * 2015-12-11 2016-02-24 中国电子科技集团公司第四十一研究所 Multichannel optical power meter automatic calibration system and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140176948A1 (en) * 2000-04-11 2014-06-26 Rah Color Technologies Llc Methods and apparatus for calibrating a color display
CN101788341A (en) * 2008-08-04 2010-07-28 香港纺织及成衣研发中心 Device and method for detecting fabric color
CN102124310A (en) * 2008-08-22 2011-07-13 柯尼卡美能达光电株式会社 Photometric/colorimetric device
CN102735339A (en) * 2011-04-01 2012-10-17 爱色丽欧洲公司 Color measuring device calibration
CN104574371A (en) * 2014-12-20 2015-04-29 中国科学院西安光学精密机械研究所 High dynamic color digital camera characterization calibration method
CN105352598A (en) * 2015-12-11 2016-02-24 中国电子科技集团公司第四十一研究所 Multichannel optical power meter automatic calibration system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119779486A (en) * 2025-03-10 2025-04-08 上海唯视锐光电技术有限公司 A method for measuring imaging chromaticity and a measuring device based on the method

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Application publication date: 20180703