CN111879404A - Light source parameter optimization method - Google Patents
Light source parameter optimization method Download PDFInfo
- Publication number
- CN111879404A CN111879404A CN202010571156.0A CN202010571156A CN111879404A CN 111879404 A CN111879404 A CN 111879404A CN 202010571156 A CN202010571156 A CN 202010571156A CN 111879404 A CN111879404 A CN 111879404A
- Authority
- CN
- China
- Prior art keywords
- color
- light source
- standard
- source
- brightness
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005457 optimization Methods 0.000 title claims abstract description 6
- 230000007547 defect Effects 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 3
- 238000012937 correction Methods 0.000 abstract description 12
- 238000011156 evaluation Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000003595 spectral effect Effects 0.000 description 9
- 238000009826 distribution Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- MRMBZHPJVKCOMA-YJFSRANCSA-N biapenem Chemical compound C1N2C=NC=[N+]2CC1SC([C@@H]1C)=C(C([O-])=O)N2[C@H]1[C@@H]([C@H](O)C)C2=O MRMBZHPJVKCOMA-YJFSRANCSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/08—Arrangements of light sources specially adapted for photometry standard sources, also using luminescent or radioactive material
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention relates to a light source parameter optimization method, which realizes comprehensive evaluation and correction of various color brightness meters by using various color sources such as red, green, blue, orange, yellow, purple and the like under the required brightness, overcomes the defects of the prior art and ensures the accuracy and precision of the traceable chromaticity reference transmitted data.
Description
Technical Field
The invention belongs to the field of intelligent illumination, and particularly relates to a light source parameter optimization method.
Background
In lighting engineering, the most important is the macroscopic effect of the overall light and color environment after the light source, the lamp and the irradiated surface are combined. The color brightness meter with the imaging system can obtain corresponding brightness value and chromaticity coordinate through non-contact measurement. The measurement department of the State technical supervision agency sets a color brightness meter, a brightness meter, an illuminometer and a weak illuminometer as national measurement instruments, direct measurement transmission can be carried out if necessary, and measurement results can be conveniently communicated with the international connection rail internationally.
The color brightness meter is the most important color measuring instrument in color display and chromaticity measurement in lighting engineering, and the detector with color filter and photomultiplier combined together should meet the spectrum tristimulus value curve as accurately as possible.
However, some instruments such as BM-7 and the like cannot well simulate the tristimulus value chromaticity error of human eye spectrum on the spectral response. In order for various color luminance and color illuminometers to function properly in measuring the chromaticity parameters of a color display, the instrument must be calibrated and a standard transmission light source color source must be used. The technical data of the color display product can trace to the national and international metering standard.
In order to make various color brightness meters and color illuminometers play normal roles in measuring chromaticity parameters of a color display, the instruments must be calibrated, and a standard transmission light source color source must be used, so that technical data of color display products can be traced to national and international measurement standards.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a light source parameter optimization method.
The method is characterized in that the color source standard of the transmission of various light sources and the integrating sphere are innovatively realized, the defect of insufficient brightness after the colored light filter is added into the American Japanese standard light source is overcome, the transformer, the light source, the fan, the colored light filter and the integrating sphere are integrated into a standard transmission light source color source, the standard transmission of the color value of the flat panel display can be carried out under the required brightness after the colored light filter is added, and the defects of the prior art are overcome by ensuring the accuracy and precision data of the traceability chromaticity reference transmission.
The invention is realized by the following technical scheme:
1. the method has the advantages that the color source standard of the transmission of various light sources and the integrating sphere are innovatively realized, the defect of insufficient brightness after the colored light filters are added into the American Japanese standard light source is overcome, the transformer, the light source, the fan, the colored light filters and the integrating sphere are integrated into a standard transmission light source color source, and the standard transmission of the color measurement value of the flat panel display can be carried out under the required brightness after the colored light filters are added, so that the accuracy and the precision data of the source tracing chromaticity reference transmission are ensured;
2. the light source, the integrating sphere and the colored glass with various models can form an integrated standard transmission color source. The color-changing material comprises red, green, blue, orange, yellow, purple and other colors, and can supplement other colors at any time according to the progress and the requirement to ensure that the brightness of each color can meet the requirement of standard transmission;
3. if the tested instrument is mounted on the pulley rotating table and the optical axis of the instrument and the optical axis of the optical rail are in the same horizontal plane, all the work is carried out in a strict dark room.
However, the trolley rotating table, the optical track and a strict darkroom are not possessed by most units; therefore, the method is difficult to be applied to practical development and popularization,
the method is characterized in that the color source standard of the transmission of integrating various light source color sources and integrating spheres is innovatively realized, the defect of insufficient brightness after a colored light filter is added into a standard light source of the American Japanese standard light source is overcome, a transformer, a light source, a fan, the colored light filter and the integrating sphere are integrated into a standard transmission light source color source, the standard transmission of the color value of the flat panel display can be carried out under the required brightness after the colored light filter is added, so that the accuracy and precision data of the traceability chromaticity reference transmission are ensured, and the defects of the prior art are overcome
The invention is characterized in that a functional light source, an integrating sphere, various types of colored glass and a calibration and standard transmission light source are integrated, wherein various actual colored lights comprising red, orange, yellow, green, blue and purple light filters and standard lamps are used for detecting the color brightness meter, the key that the color measurement value is worthy of tracing implementation is provided, the detection procedures of the color brightness meter and the brightness meter are more feasible, and the standard quantity value transmission is more scientific and rigorous
Detailed Description
In order to reduce errors, a color source with the spectral distribution similar to that of the color source to be measured is selected and used as a correction light source to calibrate the colorimeter, and a correction coefficient suitable for the color source to be measured is obtained, so that the consequence caused by the fact that the spectral sensitivity of the colorimeter is inconsistent with CIE spectrum tristimulus value curves X (lambda), Y (lambda) and Z (lambda) is reduced to the minimum.
BM-II is a color luminance meter developed by Tokyo optical mechanical Co., Ltd, Japan, and Tokyo gives correction coefficients (i.e., color correction coefficients) of tristimulus values of each color luminance meter, and discloses that the color measurement errors are between 0.01 and 0.03 as Δ x and Δ y.
Table one lists the color measurement errors that still exist after using the color correction coefficients provided by tokyo optomechanical corporation, japan. In order to perform a precise and accurate colorimetric measurement, it is necessary to solve the problem that the method and the way of obtaining the most suitable color correction factor (whether it is a 1980A color luminance meter or a BM-II color luminance meter) need to perform the detailed operation, and to minimize the color error by focusing on analyzing the color difference of the sample which often needs to be tested. The uniformity of the magnitude of the color measurement can be finally achieved.
Test results
Using a tristimulus correction coefficient Kx of 0.771, Kb of 0.067, and Kb of 0.441 provided by tokyo optomechanical corporation, the chromaticity error data are as follows:
watch 1
Obtaining of color conversion constant (color correction coefficient)
In order to perform accurate colorimetric measurement and solve the problem of uniform magnitude among measurement results of different colorimeters, the colorimeter needs to be calibrated by using a standard light source and a standard color source, and a conversion constant of the colorimeter is calculated.
Calculation and verification of continuous spectrum color conversion constant
According to the geometric layout of the national standard 'illumination light source color measurement method', a BM-II color luminance meter is used for repeatedly measuring corresponding conditions of a barium sulfate white board irradiated by a halogen tungsten lamp in 1980B. The output value Y, X, Z of the same condition is measured by a color luminance meter under the record of a pointer type reading meter of replacing BM-II by a digital voltmeter, and the average value according to the measurement result is as follows:
the color conversion constant is obtained by using the following formula, wherein Y is 87.821, X is 124.36, and Z is 93.
Wherein xo, yo and zo are 1980B, and chromaticity coordinates are calculated.
xo＝0.4438、yo＝0.4023、zo＝0.1539
The outputs of the Rro, Go and Bo are measured by BM-II color luminance meter under the same conditions. Kx-0.738, Kb-0.0537, Kb-0.3580
The light source chromaticity coordinates x and y were calculated by Kr-0.7309, Kb-0.0539 and Kb-0.3576 and compared with known chromaticity values (obtained by spectroscopy), and the results are shown in table two.
Watch two
We compare with table one and table two clearly see that: after the appropriate color correction coefficients are adopted, the color measurement accuracy of the color luminance meter is obviously improved, and the color measurement errors (no matter delta x or delta y) of the A light source, the four white light sources and the red light source are within 0.01.
The validation report of table two demonstrates the accuracy and precision of the appropriate color correction factor.
This work further illustrates: if the measured color source has a continuous broadband and smooth spectral distribution and the spectral distribution difference between the measured color source and the measured color source is not large, the required color conversion constant change is small, and a certain application and extension range can be achieved. We can analyze from table two: the color conversion constant obtained by using the A light source as a calibration light source can be suitable for white light with other spectral distribution, even red light, and the error between the chromaticity coordinate calculated by using the group of color conversion constants and the direct measurement value of 1980B can be reduced to be within 0.01; the spectral distributions of the blue source, the green source and the A light source are obviously different, if the chromaticity error is more than 0.01 by using the set of color conversion constants, the color correction coefficients suitable for the blue source and the green source are required to be additionally adopted. Calculation and verification of the discontinuous spectral color conversion constant, when analyzing the applicable range between the measured light source and the calibration light source, not only the chromaticities of the measured color and the calibration color, but also the spectral distribution of the measured color and the calibration color are noticed.
With the development of the economic globalization, the demand for mutual recognition of the measurement data is increasing, and the basis of the mutual recognition depends on the level and consistency of the measurement benchmarks of each country. For this reason, the international metering agency (BIPM) invites the national metering agencies to have a mutual approval agreement (MRA) between the national metering standards and the calibration and measurement certificates issued by the national metering agencies according to the requirements of WTO, and proposes a mutual approval scheme between the national metering standards and the calibration and measurement certificates issued by the national metering agencies. The newly revised international standard for laboratory capability assessment (ISO17025-2000) of the international organization for standardization (ISO) has clearly specified that all measurement data issued to various laboratories must be traceable, i.e. traceable to the national measurement standard. The key point is that the numbers should have traceability and play a role in standardizing the current situation that the transmission of the current quantity values is inconsistent.
The development of a standard transmission color source integrating a plurality of light source color sources is the key for tracing and implementing the color measurement value of the flat panel display. The data can be traced to the national and international measurement standards to drive the products of the related industry to enter the international market.
The color luminance meter cannot be used only for measuring the a light source, and thus the verification of the color luminance meter using only the a light source is not sufficient.
Claims (3)
1. A light source parameter optimization method is characterized in that color metric value standard transmission of various light source color sources of red, green, blue, orange, yellow, purple and the like can be developed under required brightness, and the defect of insufficient brightness after a colored light filter is added into a U.S. Japanese standard light source is overcome, so that the accuracy and precision of source tracing chromaticity reference transmission data are ensured.
2. The method of claim 1, wherein the light source, the integrating sphere and the colored glasses of different types are used to form an integrated standard transmission color source, and other colors can be supplemented at any time according to the progress and need.
3. The method of claim 1, wherein the prior art requires a pulley rotating table and optical track and a strict dark room; this is not the case in most units, and is therefore difficult to put into practice and popularize; the invention overcomes the defects of the prior art, has obvious practicability, and is characterized in that a light source, an integrating sphere and various types of colored glass are combined into a whole to form a calibration and standard transmission light source, wherein various actual colored lights comprising red, orange, yellow, green, blue and purple light filters and standard lamps are used for calibrating the color brightness meter, the key that the color measurement value is worthy of tracing implementation is provided, the calibration procedure of the color brightness meter and the calibration procedure of the brightness meter are more feasible, and the standard quantity value transmission is more scientific and precise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010571156.0A CN111879404A (en) | 2020-06-22 | 2020-06-22 | Light source parameter optimization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010571156.0A CN111879404A (en) | 2020-06-22 | 2020-06-22 | Light source parameter optimization method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111879404A true CN111879404A (en) | 2020-11-03 |
Family
ID=73156597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010571156.0A Pending CN111879404A (en) | 2020-06-22 | 2020-06-22 | Light source parameter optimization method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111879404A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062010A (en) * | 2014-06-27 | 2014-09-24 | 杭州彩谱科技有限公司 | Spectral optical source color illumination measuring instrument for optimizing calibration algorithm |
| CN204831751U (en) * | 2015-07-29 | 2015-12-02 | 合肥埃科光电科技有限公司 | Colored camera colour response test of industry and correcting unit |
| CN105571822A (en) * | 2015-12-24 | 2016-05-11 | 中国电子科技集团公司第四十一研究所 | Calibrating device of two-dimensional color analyzer and calibration method |
| CN212158823U (en) * | 2020-05-13 | 2020-12-15 | 天津凯迪歆航照明显示设备科技有限公司 | Light source integrating sphere colored glass integrated standard transmission color source device |
-
2020
- 2020-06-22 CN CN202010571156.0A patent/CN111879404A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062010A (en) * | 2014-06-27 | 2014-09-24 | 杭州彩谱科技有限公司 | Spectral optical source color illumination measuring instrument for optimizing calibration algorithm |
| CN204831751U (en) * | 2015-07-29 | 2015-12-02 | 合肥埃科光电科技有限公司 | Colored camera colour response test of industry and correcting unit |
| CN105571822A (en) * | 2015-12-24 | 2016-05-11 | 中国电子科技集团公司第四十一研究所 | Calibrating device of two-dimensional color analyzer and calibration method |
| CN212158823U (en) * | 2020-05-13 | 2020-12-15 | 天津凯迪歆航照明显示设备科技有限公司 | Light source integrating sphere colored glass integrated standard transmission color source device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10215640B2 (en) | Method for performing color measurement using standard light source color matching observation box | |
| CN101100807B (en) | Textile color stability and color aberration grading method | |
| CN107084927B (en) | Substrate chromaticity detection method and device | |
| TWI454679B (en) | Optical detection system and optical property detection method | |
| CN106840404B (en) | A kind of grading automatical measuring method of diamond color | |
| CN110208199A (en) | One kind can be used for the device and method of ultraviolet in on-line determination water-visible absorption spectra | |
| CN104062010B (en) | A kind of light splitting light source colour illumination photometry instrument optimizing scaling algorithm | |
| CN106679811B (en) | A kind of grading automatical measuring method of diamond color | |
| CN1758036A (en) | Integrating light radiation degree measuring system and method with spectrum analysis correction | |
| CN209541904U (en) | The colour photometer of the accurate measurement color of automatic compensation is realized based on environmental change | |
| CN111879404A (en) | Light source parameter optimization method | |
| CN113487681A (en) | Camera color calibration method based on spectral sensitivity curve and light source spectrum optimization | |
| JPH06109545A (en) | Color tone inspecting method | |
| CN105606220B (en) | It is a kind of to optimize wavelength antidote and the spectrophotometric color measurement instrument using this method | |
| CN111060204A (en) | Calibration device and method for color analyzer | |
| CN205808911U (en) | A kind of optical properties of material measurement apparatus | |
| CN105424615B (en) | A kind of optical properties of material measuring device | |
| US9347823B2 (en) | Absolute measurement method and apparatus thereof for non-linear error | |
| Neyezhmakov et al. | Increasing the measurement accuracy of wide-aperture photometer based on digital camera | |
| US20200355623A1 (en) | Quantitative test method for striae in optical materials | |
| CN108362650A (en) | Liquid coloration detection method and device | |
| CN113189031A (en) | Rosin chroma standard block quantity value tracing method and device | |
| CN105572055A (en) | Non-contact type color detecting method based on digital image technology | |
| CN112945867B (en) | Reflective gray-scale test card measuring system and method | |
| CN113932931B (en) | Symmetrical color temperature calibration device and color temperature meter calibration method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201103 |
|
| WD01 | Invention patent application deemed withdrawn after publication |