In recent years, more and more high-power high powered laser pointers have become popular around the world, and the powerful performance of the laser beam has seriously increased the potential risk to the human retina. Therefore, people must always pay attention and actively take measures to avoid the danger of offending the strong beam. The structure of the red laser pointer is the simplest, and the reason is very simple, because the red laser pointer is basically just a battery, relying on the energy of the diode. There is also a laser diode that produces a wavelength. The red laser pointer that appeared in the 1980s was a huge and heavy device worth hundreds of dollars; it was very small and very cheap.
Although many astronomers and astronomy enthusiasts use high-power lasers, such as handheld devices or laptops, they are not actually necessary. A power laser pointer like ours (200mW) is sufficient. The reason why many people still use high-power lasers is the visibility of the beam. Therefore, if you decide to use a more powerful important instructions of laser pointer, be sure to take extra safety precautions and make sure that everyone around you is wearing laser safety glasses.