Detailed CRI color evaluation system and its application in LED lighting design
In the first two days, your WeChat Weibo was led by Xueba and the guilty little ones. After 90, Xueba Xiaomei said that it was very uncomfortable, counterattack, must be counterattack!
- Xiaowen, I heard that your university is learning lighting.
- Yes, leadership.
- Then help me to change the light bulb.
- Leadership, please respect the profession of lighting. The lighting is. . .
- Please explain the CRI color evaluation system and its application in lighting design.
-- Leadership, CRI is the effect of a light source on the color appearance of an object compared to a standard reference source. In other words, CRI is a measure of color recognition in comparison to a standard source such as daylight. It has 15 standard color samples, the first eight R1-R8 are the general color rendering index, and the latter R9-R15 is the special color rendering index.
Figure: 14 color samples in the CRI system (15th is the Asian female skin color)
This is the same as our company's KPI assessment system. There are 15 indicators, 8 basic indicators, and 7 special indicators. Each indicator has an assessment basis, which is the color sample.
For the basic indicators, if the employee's work performance fully meets the assessment requirements of this indicator, the score is 100. The lower the degree of compliance, the lower the score, the lower the total score of R1-R8, the lower the average score Ra, indicating that the employee The worse the job performance, the lower the basic salary you give him.
Special indicators I heard that you are dissatisfied with the comprehensiveness of the previous assessment indicators, new additions, supplements to the basic indicators. And the calculation method is different, and there may be negative points. Therefore, our colleagues are more demanding of self, afraid that you will sacrifice handcuffs, especially R9, you require everyone to be professional, but also to be red, in your words, called red and special.
Figure: Calculation method for special color rendering index
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