Laser pointers with 405 nanometers wavelength of light are also called blue violet laser pointers. Although it is rarely prefered to the green and red ones, it could be used for what others do, which also reflects the individual unique aesthetic taste. It is probably not as much preferred lasers as an astronomy laser pointer, because brighter colors would make an object more visible in the sky. However it comes down to all other uses such as pinpointing something on the large screen or on the blackboard.
Green laser pointers is now the world's most popular laser pointers, because the green light than red light 6 times more than red light beam significantly, while the price is much cheaper than the blue and yellow. Green pen is the wavelength of light emitted 500-550nm, the wavelength sensitivity of the coefficient table, as is the closest one wavelength. Green is undoubtedly efficient light source, the eye more easily identified. The green light sensitivity of the human eye is higher than a lot of red; the other is green light scattering in the atmosphere more than red light.
Red laser pointers, wavelength 630-670nm green laser pointer is more for longer. The first red pointer was released in the early 1980s. Nowadays, the red laser diode technology has been very mature. More durable, the price is much more cheaper than ever. More easily transmitted red light air, dust, water vapor, so the light path can be seen to need more power. 100 mW red laser pointers probably only about 20 milliwatts, and green. Do remember that red laser pointers are powerful since the light they emit is powerful when it hits a certain object and converges into a point.
Place to note
Now, more and more laser pointers and flashlights sold in the market are class IIIB with a power over 5mW. But when the laser directly penetrates into the eyes, there may be some damage. Especially to some high power laser pointers, diffuse light probably damage the eyes, the focus are more likely to ignite flammable materials. Therefore laser pointers are not a toy, not suitable for children. When operating high-power laser, wear special secure glasses would be safe, especially for the invisible laser. In a word, no matter how much power the laser power is, you need to avoid hitting into your eyes.
Lasers have many applications like astronomy and hunting. Expecially Green Astronomy Laser Pointer can be seen in usages such as astrophysical maser and atom laser. A low-powered green laser pointer is used by astronomers to easily point out stars and constellations. You can find the best astronomy laser pointer in Laserpointerpro.com.
I ordered 2 of these lasers and one worked great the other would not focus correctly and had wide beam even in close distance. Removing endcap on the laser that worked correctly and replacing it with the one that was working incorrectly fixed problem. This showed me endcap was bad. I contacted customer support and after 10-15 emails back and forth where i sent them pictures and had to email multiple accounts i was told that they would not send me new endcap to fix problem but to ship laser at my cost back to them and they would refund my money. It costs more I am sure to ship back to China or wherever then a new laser costs im guessing. Hope you get the laser that works not the one that doesn\'t work if you purchase this laser. Dont bother with customer support if something is wrong.
The red (case) version will melt trash bags. I\'m afraid what it would do with a fully charged battery.\r\nUsing it for astronomy, pointing out features, Works great.\r\nBe careful, this thing can blind you.\r\n\r\n