Led desk lamp and common desk lamp which is good
If the wavelength change, stimulate phosphor ability to drop, luminous efficiency will be lower. Manufacturers in order to pursue the brightness, usually to strengthen the blue LED light intensity, the eye if the long run, such a source to avoid eyes blue light damage. In addition, it is, the longer the LED light, the faster the phosphor decay of light source, the result will lead to the human eye contact blue wavelengths of light is more and more intense, so as to cause harm to the human eye
So the eyes see the LED light source for a long time, makes people dizzy, uncomfortable feeling, even will cause harm to eyes, make the risk of eye diseases will be improved. Remind, don't let the eyes looked at bright LED light source for a long time, so as to avoid eye damage. Led lighting use less as far as possible, the led is only suitable for auxiliary lighting
The launch of the white light LED light source can form mainly consisted of 450 ~ 455 nm wavelength of the blue light stimulate phosphor powder, including lower wavelength firing ability are more strong. Usually LED lights factory within a 500 - nm wavelength control, generally is 450 ~ 455 nm or 455 ~ 460 nm, belong to the strongest radiation damage extents
