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01

So what are the bad effects of too low R9 on children?

Different scenes have different requirements for the light source color rendering index.

From the point of view of protecting eyesight, the color rendering index of the lamp used needs to be greater than 80.

02

Why the strip lights need R9

Why the strip lights need R9 ？

color rendering：It is the reality of the feeling of the object under the light source and the feeling under the sunlight, which is an important aspect of evaluating the lighting of the light source。

color rendering index：It is the parameter used to evaluate the color rendering of human light sources.  The closer the color rendering index is to 100, the stronger the color reproduction ability.

So how does the color rendering index come out?

CIE (International Commission on Illumination) has built an evaluation model, which stipulates 14 colors, and China adds Asian women's skin color to 15 colors.

Marked as R1, R2, R3... R14, R15.

03

Reasonable use of blue light to protect eye health

The degree of damage to the eyes by blue light varies from age to age. In older people, the crystals turn yellow with age; 

A child's sensitivity to strong blue light can cause vision loss and even eye diseases.

It is worth noting that in real life, we generally do not look directly at LED lights, but the time to look directly at mobile phones and computer screens will be very long, only by developing good eye habits can we effectively reduce the damage of blue light to the eyes.

04

What is color tolerance

Color tolerance refers to the difference between the computer-calculated formula and the target standard. When calculated under a single lighting source, the smaller the value, the higher the accuracy. However, it should be noted that it only represents color comparison under a certain light source and cannot detect deviations under different light sources. The difference between the light source emitted by the light source and the standard spectrum.

Industry standard level:

1.Energy Star ANSI C78.376, color tolerance ≤ 7 SDCM, divided by LED characteristics.

2.The EU standard ERP, with a color tolerance of ≤ 6 SDCM, standardizes LED zoning according to lighting technical requirements.

3.According to the national standard GB10682-2002, the performance requirements for double ended fluorescent lamps require a color tolerance of ≤ 5 SDCM, which can be used as a reference for the color tolerance requirements of LED lamps。

About Acme Color Tolerance≤ Implementation of 3 SDCM products

 Improve the color concentration of the order, take the center point of each color tolerance as the center point of the product color, and the color of the lamp bead is concentrated in the range of 3 orders as much as possible; 

For SMD and imitation lumen orders, the color tolerance of some products will fall into the range of 3-5 orders, and the BIN can be divided according to the color tolerance difference splitting meACMEd, and the color tolerance of the whole lamp can be less than 3 orders through cross-SMT, and the same optoelectronic technician can give you the best matching scheme.

05

What is the relationship between it and color temperature?

To understand color tolerance, you need to know what correlated color temperature is. Correlated color temperature is not color temperature, so what is the difference between them? Of course.

Color temperature refers to: when the color of the light emitted by the light source is the same as the color of the black body radiating light at a certain temperature, the temperature of the black body  curve is called the color temperature of the light source.

That is, only falling on the blackbody curve can be called color temperature。

06

The difference Color rendering index between 80 and 90