Why is the mosquito killer light purple

Mosquito Killer Lamp is an environmental protection device used to trap mosquitoes. It can be used not only in private places such as villa courtyards and gardens, but also in public places such as residential areas, parks, and hotels.

According to biologists' research conclusions, mosquitoes are phototaxis and are very sensitive to certain light waves. This is the basis for the development and design of mosquito killer lamps. So what color light is attractive to mosquitoes? Not white light, not blue light, not red light, not violet light, actually long-wave ultraviolet. Long-wave ultraviolet rays refer to light waves between 320nm and 400nm, which cannot be recognized by the human eye. But we usually see that the light emitted by the mosquito killer is purple, so why is the mosquito killer purple light? In fact, long-wave ultraviolet light is just between visible light and invisible light, and the visible light end is just violet light. The peak value of long-wave ultraviolet rays is 365nm, which cannot be seen by the human eye, and the edge is purple light, which can be seen by the human eye, but it is relatively weak. It is very small in attracting mosquitoes. Just because it is displayed and recognized by the human eye, many people mistakenly believe that the mosquito killer lamp uses purple light to attract mosquitoes.

Are UV rays harmful to humans? Ultraviolet rays are divided into short-wave ultraviolet, medium-wave ultraviolet and long-wave ultraviolet. Among them, short-wave ultraviolet and medium-wave ultraviolet rays are harmful to human beings, and the severity is carcinogenic. The harm of long-wave ultraviolet rays to people is mainly concentrated on skin tanning. As for the mosquito killer lamp, the harm or radiation of the mosquito trapping light of the mosquito killer lamp to people can be ignored. Because the radiation value of this mosquito light source is very small. In addition, the mosquito killer mainly works at night and is in an outdoor environment. While people are not outdoors at night, there is no overlap between the two.