The relationship between color rendering index and color rendering of led lamps
The color rendering index of led lamps has an important relationship with color rendering. It is necessary to clearly emphasize specific colors, and the performance of beautiful life can use additive color methods to enhance the color rendering effect. Different color temperatures are manifested in three aspects: First, use a low color temperature light source to illuminate, can make the red more vivid; Second, use a medium color temperature light source to illuminate, so that the blue has a cool feeling; Third, use a high color temperature light source to illuminate, so that the object is cold feel.
The relationship between color rendering index and color rendering
When there is little or no main wave reflected by the object under the reference light source in the light source spectrum, the color will produce obvious colors. The greater the degree of chromatic aberration, the worse the color rendering of the light source. The color rendering index coefficient is still a common method for defining the color rendering properties of light sources.
The color rendering index of sunlight and incandescent lamps is defined as 100, which is regarded as an ideal reference light source. This system uses 8 standard color samples with medium chroma to test, compares the deviation degree of the 8 colors under the test light source and the standard of the same color temperature, to measure the color rendering index of the light source, and take the average deviation value Ra20-100 , 100 is the highest, the larger the average color difference, the lower the Rr value. Light sources below 20 are generally not suitable for general use.
Index (Ra) Grade Color rendering General application
90-100 1A Excellent Places where precise color contrast is required
80-89 1B Good Places where correct color judgment is required
60-79 2 Normal Places requiring medium color rendering
40-59 3 Not good Low requirements for color rendering
Therefore, an important parameter that must be paid attention to when choosing LED fluorescent tubes, usually the CRI is around 70, but currently around 80 CRI has been popular, and the current Langte company has reached 92. But there are also shortcomings. The color rendering index has a relatively large relationship with brightness. , The relationship is inversely proportional. It is good to choose the color rendering index LED fluorescent tube that suits your requirements. Don't deliberately pursue this index, which will increase the cost. You must use large chip lamp beads to meet the requirements.
