Is the 50mw purple laser pointer harmful?
Class 3B visible light laser is harmful to eyes. They can cause retinal burns. A person cannot turn around or blink quickly to prevent nearby Class 3B lasers from damaging the retina. At the low end, about 5 to 50 milliwatts, Class 3B lasers pose a moderate risk of eye damage. 50mw purple light laser pointer. The visual range at night is generally about kilometers, depending on the local air quality. In the daytime indoors, take Nuoqing 50mw green light pen as an example, the obvious distance for indoor indication is within 50-100 meters. If it is outdoors, because there is a distinction between sunlight and shadows, green spots can be seen within 20-50 meters under sunlight. The shadow will be farther away.
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If we have a 50mWGreen laser pointer, it will be 5 times brighter than a 500mW blue or red laser and 7 times brighter than a 50mW purple laser. Generally, low-power laser pointers for civilian use are mainly in the visible light band, which can damage the choroid and retina, but generally, laser pointers that can cause retinal hemorrhage and rupture are more difficult to buy, and a doctor's examination should also rule out this possibility. There may be some damage, but generally it is recoverable, and the visual acuity is not obvious.
2021-09-24 11:16:06
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