What causes low quality lasers?

Whenever people point at a pen laser device, don't put it in the wrong hands or overuse it. Power plays an integral role in modern military combat. For example, soldiers can use a high-powered green laser pointer to roughly detect the location of an enemy. High power green laser pointers and portable green lasers currently range from 5mW to 50,000mW. From a common presentation tool, blue laser pointers have many uses, not only for entertainment and entertainment, but also many applications such as military, astronomy, science, medicine, and experiments. Almost all velvet feet are immediately engrossed in highlights, chasing it or waiting for the red fugitive around the corner. Big advantage: Due to the great distance of the light, the whole room suddenly becomes a playground for all the cats who love to play.

Therefore, it should be checked carefully with an infrared filter for safe use, and an infrared filter can protect your eyes from ray radiation. In this case, cheap laser pointers are powerful enough without demanding high-tech specs and high standards. Choosing a low quality laser is not a good thing, the special emission of the 635nm high power laser pointer beam will make a completely different experience when directing this red laser in the dark. But all you have to do is choose a specific color or specification of the laser. The already focused light is further focused by the lens to a sharp point on the retina (limited diffraction). According to the U.S. Food and Drug Administration (FDA), as of April 2012, we have not received any reports of laser damage below 5 mW.