What is the color rendering index of LEDs?

Try to wear the color on the left in the store. When you get back home, it will become the color on the right.

The fruit sold in the supermarket is mouth watering, but the fruit on the stall is...?

Why do the same clothes, the same fruit, present different colors in different environments? This involves the color rendering of the light.

Color rendering, which represents the ability of light to restore the original color of the object, that is, the degree of color fidelity, usually called the "color rendering index" (Ra). Color rendering is divided into two categories: "faithful color rendering" and "effect color rendering". Color rendering is an important aspect to evaluate the quality of lighting. Color rendering index is an important method to evaluate the color rendering of light sources. It is an important parameter to measure the color characteristics of artificial light sources.

Generally speaking, the higher the color rendering index, the better the color rendering of the light source and the stronger the color reproduction ability of the object. If the color rendering index is too low, it will affect the judgment of the human eye on the color of the object. Over time, it will cause various vision problems.

The International Commission on Illumination (CIE) sets the color rendering index of sunlight to 100 and specifies 15 test colors, with R1-R15 indicating the display indices of the 15 colors, respectively.

The color rendering of the light source is good, that is, it is the score of the 15 points. When comparing a light source to a specified reference source, an index value of 100 is preferred. The general color rendering index roughly divides the color rendering of the light source into four categories: 50 or less is "poor", 50 to 70 is "general", 70-80 is "good", and 80 or more is "excellent".

Is the color rendering index important in headlight lighting?

We and the instrument believe that from the basic function: the lights are to let drivers and pedestrians find road obstacles, recognize the direction of the road, and ensure the safety of drivers and pedestrians; but how do we ensure that drivers and pedestrians find road obstacles, Know the direction of the road? Brightness is the key, but the color rendering index is not negligible. A very important parameter for purchasing a lamp is the color rendering index of the light source. The lower the color rendering index, the greater the color difference of the object under the illumination of the light. The LED light source must use at least the “excellent” level of this indicator to create a “comfortable and safe” driving environment. Quickly change LED headlights, high index, safer!

In general, we can feel comfortable and relaxed under the illumination of high color rendering light sources. Under low color rendering, there is color difference, and it is impossible to restore the color of the real color, and the mood is easy to produce a feeling of depression.

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