LED lights whether blue eyes

Since this year, LED street light, about LED blue light overflow the eyes several times, some people are so afraid to use LED lights. What is LED in the blue? Will hurt eyes? LED lamps and lanterns is safe? Lighting today is to introduce you to blue light is harmful to the eyes.

since this year, LED street light, about LED“ Blu-ray overflow the eyes & throughout; The multiple occurrences, some people are so afraid to use leds. What is LED in the blue? Will hurt eyes? LED lamps and lanterns is safe? Lighting today is to introduce you to blue light is harmful to the eyes.

blue light damage depends on the human eye receives a blu-ray total dose, the same color temperature of LED lights and the safety of the energy-saving lamps.

in China (2013 Shanghai) International semiconductor lighting application technology on the BBS, experts attending the meeting discussion on blu-ray security problem. Photoelectric information engineering, zhejiang university, professor, department of seeks with introduction, visible light is made up of red, orange, yellow, green, green, blue, violet seven kinds of color of light, the wavelength - in 435 500 nm light corresponding to blue and green, the scientific community is usually 400 - The wavelength of 500 nm range called & other; Blue area throughout the &; 。

fudan university associate professor, deputy director of the institute of electric light source Zhang Shanduan said: & other; The principle of white LED is blue LED chip stimulates the yellow phosphor conversion after the formation of white light. 400 - blu-ray harm is refers to the light source 500 nm blue band if brightness is too high, eyes look after for a long time may cause of retinal photochemical injury. Blue light damage depends on the human eye under the lights are cumulative receive blue light dose. ”

　　“ LED lamps on the market at present commonly used technology & lsquo; Blue chip + yellow phosphor powder & # 39; , make the content of the blue light in LED lights are relatively high, but that doesn't mean that leds more injury eye than other lamps and lanterns. ” Zhang Shanduan says, in what they're doing the comparison experiment, the same color temperature of LED lights and the safety of the energy-saving lamps.

color temperature, it is the light source spectral quality * general indicators. “ Warm light & throughout; Color temperature is low, and & other; Cold light & throughout; The color temperature is relatively high. Color temperature increase, the proportion of blue radiation increases, the blue light increases. At the same time, the brightness also influence the proportion of blue light. In general, the same color temperature of fluorescent lamp and LED lamp, as long as the latter's brightness is not more than 3 times of the former, basically do not have harm. But individual too bright LED lamps and lanterns, the proportion of blue light may have more than is considered safe. Zhang Shanduan said, as the LED technology matures, manufacturers will no longer need to constantly improve the soft power of lamps and lanterns to implement Gao Liuming degrees, objectively also reduces the likelihood of blue light too.