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.
For pets who love to chase, more tangible toys, Pet Laser Pointer can be the best choice. A laser beam's incessant movement keys will let pets be happy. You can find pets laser as the Keychain Laser Pointer style or in the cute Pen Laser Pointer. Go to Laserpointerpro.com and find a nice pet laser pointer pen for your lovely pets.
I bought 6 of these lasers in 2011, I gave 4 of them to family and friends and kept 2 for myself. I lost one of them soon after I purchased them and am using the last one of them now!!! I am ordering more of them today so I will have a backup. I use mine every day and its 4 years old and is as bright today as it was the first day I got it. I highly recommend them, fast service with a smile.
This is the first blue-violet laser pointer I've had, and also the first one with a kaleidoscope tip option. I have to say, this thing is great! Very high quality, and the laser without the kaleidoscope is VERY bright, even with all the lights on. (It's makes a larger dot than I normally see on standard office pointers) Feels good and solid in the hand. With the kaleidoscope on, it's better to have the lights completely out for the best effect. Overall very happy with the purchase. It took a few weeks to arrive here in San Francisco.