Laser designators used for demonstrations are usually in the 5 mW range. The laser intensity used in concerts is higher (10-10000x). These sensors have been shown to permanently damage digital camera sensors (usually straight burning lines across the entire sensor). I haven't done any tests, but I can't imagine the sensor being damaged by a small laser pointer. Will not have no right problem, the laser hit the wall part of the diffuse reflection, and the reflected light intensity is greatly reduced.
The camera needs to be replaced if a high-powered laser pointer hits it. You glad you didn't sweep to the eyes directly, mainly depends on the laser power, and the measure of CCD and cmos cameras have filter is very sensitive electronic with the original, high power radiation can cause temporary or even permanent damage Usually laser pen for 5 to 10 mw power is not enough, one camera is stage laser point-blank, instantaneous scrap. Foreign forbids the laser of 5mW above, be afraid to affect aviation, our country does not have this regulation. If it's 5mW red, you can't see the beam with the naked eye, so you have to use green. They say you can't sell the green ones. Buy it when you have the money.
The common 5MW green laser pointer requires a 200MW IR laser diode to pump, and the manufacturing cost of a perfect crystal is relatively high, so the price of the green laser pen is much higher than the red one. The most common 532NM green laser on the market is the 808NM laser diode PUMP Nd:YAG crystal, which is not 100% efficient.
