The so-called eye protection lamp is not necessarily "eye protection", and the ordinary lamp is not necessarily "eye protection". In fact, eye protection is essentially to create a healthy light environment for the eyes and reduce visual fatigue. Generally speaking, if LED lights are harmful to eyes, they mainly focus on three problems: blue light, stroboscopic light and glare.
0 1 blue light
Blue light does not mean blue light, but high-energy light with a wavelength of 400-500 nanometers. Blue light closest to ultraviolet light can penetrate the lens and reach the retina, leading to the death of retinal pigment epithelial cells. The increase of macular toxin seriously threatens our eye health and even induces blinding eye diseases. In particular, children's lenses are relatively clear, can not effectively resist blue light, and are more prone to vision problems.
However, blue light is not all harmful blue light. What is really harmful is short-wave blue light within 400 to 440. The damage degree of short-wave blue light to human eyes is related to the irradiation intensity and irradiation time. When the light reaches a certain level and lasts for more than two hours, it may damage the retina.
Check whether the LED lamp is blue light-proof, and determine an indicator-blue light danger level RG0. This indicator has passed the double safety certification of TUV hazard prevention certification and IEC test report, and the relevant certification/test passing report is authoritative only after the safety level reaches the standard of RG0 exemption level.
02 flash
Strobe refers to the fluctuation of luminous flux of electric light source at a certain frequency. The distribution of stripes can often be found by pointing the mobile phone at the light source, which is caused by stroboscopic. Severe stroboscopic will make people's eyes have an illusion, which will lead to accidents. Don't underestimate stroboscopic, different frequencies and fluctuation depths have different effects on people!
The human eye is a very complex system, and individuals vary greatly. For most people, light flicker below 80Hz can be detected. At this time, the human eye can perceive the change of light and shade. The flicker frequency below 80Hz is also called visible strobe. Ordinary lighting or display does not accept visible strobes. The country has a standard for this indicator-the stroboscopic fluctuation index must be reduced to 8% to meet the standard. Stroboscopic phenomena can lead to tears, dry eyes and fatigue, and may even induce epilepsy in children. Here is a way to detect the stroboscopic degree of your lamps. You can see it by turning on the camera function of your mobile phone. If your lamp stroboscope is on the high side, it is recommended to replace it to avoid being in such a light environment for a long time and damaging your eyesight.
03 glare
In daily life, the uncomfortable light that makes people feel dazzling is glare. Glare can be divided into adaptive glare, non-adaptive glare and disabling glare. It will cause some damage to the eyes, mainly adaptive glare and disabling glare. General brands will do anti-glare treatment for lamps, and different environments have different architectural daylighting standard. We generally choose the glare value urg.
Every day, 90% of the light environment comes from inferior artificial lighting, and tired eyes have to bear the fatal blow of inferior lighting. Therefore, when buying lamps at home, try to choose blue light, strobe and glare, which can better protect the health of eyes and provide comfortable light environment for eyes.