It is not recommended to buy laser Pointers for children to use as toy guns. We must educate our children about the risks of laser radiation and ban the purchase of high-powered laser Pointers from schools, shops and Internet providers. During the demonstration, the laser pointer should be kept out of the reach of children. Hand-held laser Pointers are limited to 5 milliwatts of visible light by US standards, but even at that level direct exposure can cause temporary flash blindness. If this happens repeatedly, or if someone blinks or is exposed to a laser and does not immediately look away, there is a risk of permanent eye damage. According to science, laser Pointers are sensitive to heat and can damage eyes and skin. If the laser is strong enough, it can cause permanent damage without causing flash reflections (usually less than 1 second). Therefore, not fully developed minors should stay away from green laser Pointers, so as not to cause harm.
The brightness and distance of the laser designator are basically proportional to the output in mW (milliwatts). So, to sum up... If laser Pointers sold in Japan have the same wavelength, they have reached a platform due to maximum output regulations, so both brightness and distance can't vary that much! Getting a green laser pointer isn't natural, but it's often considered the most obvious tool in a presentation. The DPSS green laser converts electrical energy to 808 nm infrared light, which is fed to the neodymium crystal and converts 50% of this to 1064 nm infrared light. A 1064 nm beam is then transmitted to a KTP crystal, which may convert 50% of the green light from 1064 nm to 532 nm. After a long process, it finally came true. Crows are very discerning birds and tend not to like bright lights. Among them, crow laser pointer has strong light and long range, which has a strong repellent effect on birds. I usually take a lunch break at home, or laser away stubborn crow parents to create a clean street and a clean garden.