Use the laser pointer 5000mv safely
The wavelength of the light emitted from the green pen type laser pointer 5000mw is 532 nm, and it belongs to Class IIIB. Use No. 7 battery section 2. The light of the green laser is a little stronger and more dangerous to the eyes, the higher the output, the more dangerous. Usually, 5mw is often used. In the US market, a 5mw laser pointer is acceptable, but if it exceeds 5mw, it cannot be used without approval. At home, it wasn't so strict. Therefore, special care is required during use. Irradiation to eyes and vulnerable areas is prohibited! It is also important to be careful that the laser gets into your eyes due to reflection. Laser pointers that can adjust the focus of green light usually also have a protection switch.
Follow the principles of using a laser pointer
1: Laser light is dangerous to human eyes, never irradiate human eyes directly with a laser pointer!
2: When using a Rechargeable Laser Pointer indoors or at a short distance, wear special laser shading goggles and never irradiate the laser beam directly on your face or eyes.
3: To avoid accidents, remove the battery when not in use and keep it out of the reach of small children.
Or do not let children use it.
4: Irradiation prohibited for transportation such as airplanes, trains, and cars
5: Do not keep the laser pointer on continuously for too long. (Especially green laser pointer)
It is recommended not to exceed 30 seconds in summer. If you feel the laser pointer getting warm, do not use it immediately. Please wait until it cools down completely. In winter, the green 532nm laser pointer probably has to be preheated for a period of time so that it can reach the highest luminosity. After covering it in my pocket and warming it up, I put the battery in and use it again. The star observation laser pointer device should not be continuously brightened for more than 1 minute to prevent it from aging fast and overheating and causing damage to the laser pointer LD or module!