How to protect the eyes from blue light from LED lights
To prevent the harm of LED blue light, the most important thing is to avoid looking directly at the surface of the light source for a long time. For infants and the elderly with weak awareness of protection at home, measures should be taken to prevent the light source from directly shining on the eyes. In addition, generally speaking, the proportion of blue light in warm-tone LEDs is less than that of cool-tone LEDs, and the surface brightness of LED lamps with diffuser covers is lower than that of LED lamps without covers or with transparent covers. When consumers buy LED lighting products, they should pay attention to the color tone and surface brightness of the products.
Actually the blue light of LEDs is not that serious, but exaggerated. Experts have recently concluded that:
"Blue light is the basic component of white light. Like sunlight and traditional light sources, white LEDs also contain blue light. An appropriate amount of blue light is not only necessary to ensure the color rendering performance of the light source, but also has a regulating effect on human circadian rhythms.
The damage of blue light to the retina is mainly caused by excessive radiation with a wavelength of 400-500 nanometers. The calculated data of various light sources and sunlight spectra and the measurement results of authoritative laboratories at home and abroad show that the blue light content of white LED light sources is not higher than that of traditional light sources such as fluorescent lamps and metal halide lamps and sunlight at the same color temperature; The amount of blue light irradiance on the retina of the eye is similar to that of conventional light sources such as fluorescent lamps and metal halide lamps, which are classified as safety lighting products of Class 0 and 1.
In order to ensure the photobiological safety and lighting quality of LED lighting products, LED light sources and lighting systems must comply with relevant domestic and foreign standards, and adopt reasonable optical design to control the surface brightness of the light-emitting surface to an appropriate level. When used, the illuminance and color temperature used should be determined according to the specific application.
Similar to traditional light sources, the correct use of qualified white light LED products for general lighting is completely safe for human eyes.
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