The green laser pointer, also known as the stargazer pen, will be regarded as a hidden offensive weapon if bought. I believe many people will feel uneasy. If you want to photograph the space station and let the astronauts see, 5 milliwatts is not enough, at least 1 watt, and it must be green. In other words, it is difficult for the astronauts to use the laser pointer that you can legally buy. Seen on the space station, remember to use a high-power laser pointer to illuminate the aircraft, which is illegal!Generally, low-power laser pointers for civilian use are mainly in the visible light band, which can damage the choroid and retina, but generally speaking, laser pointers that can cause retinal hemorrhage and rupture are more difficult to buy. The doctor's examination should also rule out this possible functional damage. There may be some, but generally it is recoverable, and the visual acuity is not obvious. What a dangerous product is a laser pointer. A high-power laser pointer can burn the skin and even cause a macular hole in just a few seconds, whether it is irradiated by adults or children! Some people may ask: This laser pointer looks the slightest How inconspicuous, why is it so powerful?
Buy a light sensor, and then measure the brightness and penetration of this Laser pointer to 100 meters, and then cover a translucent film on the light sensor to adjust the sensitivity. Or Taobao should have an infrared counter, that's it The left side of the gate shoots infrared light, and there is a reflective block on the right side. It is blocked to block the light. Some national laws clearly stipulate that it is forbidden to irradiate aircraft with lasers in the airport clearance area, and the maximum fine is 100,000 yuan. If serious consequences are caused, the criminal law can be sentenced to death if a lawsuit is filed for the crime of "endangering public safety by dangerous means."