How serious is blue light LED damage to the eyes?

Introduction: Although the Blu ray rich light source, Blu ray LED also won this year's Nobel prize, but some scientists have proposed that this light is harmful to the eyes, in the end what is going on?

See in some LED lighting products on such shows that Blu ray content white LED light source is not higher than the same color fluorescent lamp and metal halide lamps and other traditional light source and the light of the sun; white light LED light source in the retina of blue light exposure and fluorescent lamp and metal halide lamp, the traditional light sources are similar, belong to the 0 class and 1 class the safety of lighting products etc..

This description is very clear, that is, LED lighting products are harmless to the eyes. But why is there no such explanation? This is not reflected in the safety of consumers for the LED lamp there are doubts?

It is understood that LED lighting on the eyes of the damage is mainly due to the LED light will emit blue light, and excessive blue light into the retina, will lead to a substantial increase in the ability of retinal photoreceptors. When the amount of photons captured by the retina reaches a certain amount, the retinal cells begin to die, which can cause retinal damage.

In daily life, the use of LED lights and computers for a long time, the eyes will usually appear tired, dry, tingling and discomfort, which is actually the LED light in the blue light.

National electric light source quality supervision and Inspection Center (Shanghai) was analyzed at the beginning of last year, 27 LED light source and lamp samples. The test results show that the blue light hazard refers to when the blue light brightness to meet the standard requirements of 2 or 3 classes, will be in a short time or instant damage to the human eye. It is understood that China's LED industry production standards and international synchronization, bio safety standards are also the same with international standards, are adopted by the International Electrotechnical Commission standards.

Zhang Shanduan, deputy director of the Institute of electric light sources, Fudan University, warned that the current standard of injury is based on the measurement of the adult physique, for children, especially infants, is considered very little. For instance, the transmittance of the lens of the infant to blue light is 1 times higher than that of the adult.

That blue light hazard testing and evaluation experiments of various light sources Zhang Shanduan completed last year, brightness is the most important factor to produce blue light hazards, for the color of white light 6500K below, as long as the brightness does not exceed 100 thousand per square metre of Candela, or less than 1000 lux illumination, is completely safe.