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Spectrum feedback dimming colorimetric light box

A dimming ratio and feedback adjustment technology, applied in the field of spectral feedback dimming colorimetric light boxes, can solve the problems of time-consuming, whether the spectral power distribution meets the preset requirements cannot be effectively verified, and the feedback process is cumbersome, etc. Guaranteed reliability and high color rendering index

Inactive Publication Date: 2015-07-15
HANGZHOU EVERFINE PHOTO E INFO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This spectral matching technical solution needs to store a large amount of data as reference values ​​in advance, and the feedback process is cumbersome and time-consuming. In addition, there is still a large difference between the fitted light source spectral power distribution and the target spectrum, and the final obtained light source emits Whether the spectral power distribution meets the preset requirements cannot be effectively verified

Method used

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  • Spectrum feedback dimming colorimetric light box
  • Spectrum feedback dimming colorimetric light box
  • Spectrum feedback dimming colorimetric light box

Examples

Experimental program
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Embodiment 1

[0035] Such as figure 1 As shown, this embodiment discloses a spectral feedback dimming colorimetric light box, which includes a spectral measurement device 1 , a feedback control device 2 , an adjustable light source group 3 , a cabinet body 4 and a display screen 5 . Among them, the spectrum measurement device 1 , the feedback control device 2 and the adjustable light source group 3 are all arranged in the box body 4 , and the display screen 5 is arranged on the box body 4 .

[0036] In the present embodiment, the adjustable light source group 3 is made up of red LED, green LED, blue LED and fluorescent lamp, and spectrum measurement device 1 is spectroradiometer; Feedback control device 2 is connected with display screen 5, and feedback control device 2 includes signal The processing unit 21 and the light source control unit 22, the spectral information of the target light source is pre-stored in the signal processing unit 21, the signal processing unit 21 is connected with...

Embodiment 2

[0039] In this embodiment, through the signal processing unit 21 and the light source control unit 22 in the feedback control unit 2, the intensity of each light source in the adjustable light source group 3 is adjusted, so as to simulate the target light source spectrum. Wherein the adjustable light source group includes one or more than one LED light source.

[0040] The specific adjustment steps are as follows:

[0041] a. Set a voltage adjustment coefficient C for each independently adjustable light source in adjustable light source group 3 i (V j ), set the initial value C i (V 0 ), generally set to 1;

[0042] b. According to the spectrum of the adjustable light source group 3 measured by the spectrum measuring device 1, the signal processing unit 21 in the feedback adjustment device 2 calculates the next C according to the following formula i (V j ):

[0043] C i ( U j ...

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Abstract

The invention discloses a spectrum feedback dimming colorimetric light box. The spectrum of a light source is adjusted by arranging a spectrum measurement device and utilizing the real-time feedback regulation mechanism of a feedback control device, so that the spectral power distribution of the light source meets the preset requirement, a higher rendering index is realized, and multiple types and occasions of light sources can be generated by accurate simulation; in the whole process, the luminescence spectrum of the light source is actually measured, so that the reliability of the adjustment result is guaranteed; a great deal of light source data does not need to be stored in advance, and the luminescence spectrum of the light source can be accurately adjusted; furthermore, the spectrum measurement device is flexibly arranged, so that diversified measurement functions can be realized; the spectrum feedback dimming colorimetric light box has the characteristics of being high in regulation and control speed, high in accuracy, wide in application scope, powerful in functions and the like, thus being widely applied to occasions such as color evaluation needing multiple light source spectrum lighting conditions.

Description

【Technical field】 [0001] The invention relates to the field of color detection, in particular to a spectral feedback dimming colorimetric light box. 【Background technique】 [0002] In modern industry, there is an increasing requirement for the consistency and accuracy of the color of similar products. With the continuous development of science and technology, the inspection of product color has initially relied on the inspection personnel to compare the tested sample with the standard color card with the naked eye under ordinary light, so as to distinguish the difference between the tested sample and the standard color card. Color deviation gradually develops to put the tested sample and standard color card in the color measurement device with built-in standard light source for inspection. Standard light sources are often used to simulate artificial light sources under various ambient light. At present, D65 light source, D50 light source, CWF light source, A light source, T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
Inventor 潘建根
Owner HANGZHOU EVERFINE PHOTO E INFO
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