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.
This 30mW 532nm Powerful Mid-open Green Laser Pointer is small and exquisite, portable and with richer applications. The laser pointer can be transformed into a "disco laser pointer" with its star cap. It's truly amazing light show, you'll be surprised with that many stars fill your space. This green laser pointer is also the best gift for friends and families.
Extremely bright green laser
Power saving, compact and reliable
The laser pointer is a precise instrument
Point at any desired targets on projection screens, video monitors, and presentation graphics
You can even use the green laser pointer pen to decorate the sky at night
This high-quality laser pointer incorporates the latest technology on green laser optics and microelectronics
Use this laser pointer pen to point at any desired targets, project screens, lectures, or video monitors, presentations, museum and tour guides, point to the stars, and inspection
2 x AAA Batteries
Fixed focus, Continuous Wave
0.6" x 6.3" ( Dia. x L )
It is a green laser pointer and two AAA batteries
Put 2 x AAA batteries here
Bright green laser
1 x 30mW 532nm Powerful Mid-open Green Laser Pointer
2 x AAA Batteries
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