How much do you know about high power laser pointer? Maybe you only know red and green, maybe you also know that it can be divided into remote and ordinary, but do you also know some? It can not be said that it is secretly telling you a secret, that is, laser pointer laser pointer. Many people think that this is a pen, the other is not, it is just a meeting as a teaching tool, not a writing function. The following is a systematic introduction to laser pointers and laser pointers. In theory, everyone can have an understanding.
Originally, only the 473nm blue laser produced by DPSS, the power is low and unstable. As CASIO developed a hybrid light source high-brightness projector containing a blue laser diode (445nm), blue semiconductor diodes with a power exceeding 1000mW (Type 4) were mass-produced and popularized. Phenomenon integration: red and 5mw laser pointer colorless colloidal eggs have light paths, red light red ink and red-brown ferric hydroxide colloids have light paths. Red light is absorbed by black ink, red and green light colors, black ink and red-brown ferric hydroxide colloid are absorbed.
Generally, laser pointers belong to category 2, that is, their output power is limited to 1 milliwatt. If you take a short look, they are considered harmless to your eyes, because the glare effect is designed to trigger a turn or close eye reflex within 0.25 seconds.
