Dongguan Yijia Optoelectronics Co., Ltd. , https://www.everbestlcdlcms.com
Japanese color science experts have recently issued a warning that color rendering plays an important role in LED lighting. If the quantified figures of the LED color rendering index cannot be agreed with the human eye's viewing results, the chances of LEDs entering the lighting application in the future may not be great.
According to the Japan Color Research Institute, because the type of illumination light will cause a difference in the viewing object, the human eye will form a three-color different wavelength sensing response for R, G, and B, with the light source and the splitting. Distribution changes produce cognitive differences. At present, Ra is widely used in the lighting industry as the average color rendering index to represent the color displayed by a subject under a certain light source, compared with the color under the reference light source. The higher the Ra value, the higher the color rendering. If the Ra value is lower than 60, it means that the color presented is not standard.
It is worth noting that when the experiment is carried out by R, G, B white light led to illuminate an object, although the wavelength shifts, the difference in color rendering index becomes larger, and the human eye can't distinguish the difference at all.
The Japan Color Research Institute said that the recent measures taken by the industry have formed two different evaluation index standards, but the new evaluation method is quite controversial. The working group of the Japan International Committee on Lighting Related Resolutions has decided to propose a new case for the new color source color evaluation method within two years. How to accurately reflect the human eye interpretation experiment has become the focus of international attention.
Regarding LED lighting applications, in the past, most of the industry only focused on LED luminous efficiency and cost. However, if LED color rendering standards cannot be agreed with the human eye, there will be unreasonable factors in the specifications of international manufacturers. In addition, the color of camera photography can be There is also doubt about whether the color seen in the original illumination is reflected.
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