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 is TrustFire TR-J18 CREE 50W 8000LM 11.1-12.6V 7LED 5Modes Flashlight(Can be extended). The beam light which it gave out is bright and wide. And this bright beam can be seen miles away in the dark, that you can use it to guide your ways. Widely using, it is a really wonderful tool for household using! The fashionable LED flashlight is an ideal companion for you in the dark as well as a good helper for your camping, hiking, fishing etc.
This torch uses of a 50W bulb / LED, producing very bright beam of light
This flashlight uses a smooth reflector. The smooth reflector provides a more concentrated beam, and therefore a better throw
The body of this flashlight is built of high quality aluminum alloy, and it has a very solid construction
Internal wiring applies the high efficient booster circuit, and can utilize the batteries in the largest extent
Excellent waterproof, suitable for outdoor environment, adverse weather conditions except for diving
Lightbulb / LED Lifespan
Hi > Mid > Lo > Strobe > SOS
2 x 18650 batteries / 3 x 18650 Batteries (not included)
11.1 - 12.6V
1 - 2 hour
Clicky / Clickie
Tail - cap
Coated Glass Lens
Aluminum Smooth / SMO Reflector
Aerospace aluminum alloy
(12.28x 2.40 x 1.50) inch / (31.2 x 6.1 x 3.8) cm / (L x Head Dia.x Body Dia.)
662g / 23.35oz
1 x 1 TrustFire TR - J18 CREE 50W 8000LM 11.1 - 12.6V 7LED 5Modes Flashlight (Can be extended)
1 x Flashlight Bag
Please do not put it directly to people's eyes for the powerful light is harmful to eyes, especially for kids
Remove battery if it is not been used for a long period
To prevent recharging problems, please do not use both old and new batteries or ones with different types
Don't throw the batteries into fire in case of leak or rupture
If you would like to turn on/off the flashlight, you should press the button into 100% end. And there is a click to be heard
If you would like to change the modes, you just need to gently press the button into about 50 % end several times. And there is not a click to be heard
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