lampe de poche laser prix

Use your laser pointers as a presenter. Use it to direct the group's attention to a specific part of the information and ensure that your message reaches them correctly.
Tease your cat or dog. A cat (or dog) will drive a point around the track for hours. This toy will even give your pet a sense of satisfaction after the "hunt", even if your pet can not get the point.
Try laser dance. Point the laser pointer on a crystal, producing countless amazing laser beams to dance po (Be careful :. dancers remember not to look directly at the  laser pointer verde beams reflected and only use a small laser pointer mW)
Laser Pointers Green is the favorite color laser pointer for astronomy because green is the most visible laser pointer color. The green is more visible is because the human eye is more sensitive to green light. Another reason is the effect of light in the Earth's atmosphere: the light is visible in the sky when the atmosphere spreads and lower wavelengths are scattered more than longer wavelengths. Green is a medium wavelength so it spreads more and more visible than longer wavelengths like red.
Do you have a laser for fun now? Or you can just take a look here. And remember to be safe when you use for fun or others.

In recent years, the news items involving the use of laser pointers to dazzle a pilot from multiplying and prompted the legislature to pass a repressive text. Thus, under the terms of Article 68 of the Law of Orientation and programming for the performance of Homeland Security (LOPPSI) voted 14 March 2011: the purchase, possession or use of devices  pen pointer Laser  upper class 2 and not intended for a specific authorized use, is punishable by six months imprisonment and a fine of € 7,500.
The decree implementing this law defines the list of professionals authorized uses for laser products upper class 2. Note that these professional uses are also regulated in the context of safety, by Decree No 2010-750 of 2 July 2010 on the protection of workers against risks arising from optical radiation artificial.
Therefore, purchase, possession or use of laser devices of upper class 2 for any other use, professional or not, will be punishable. Those with a device of this type are therefore invited to dice today to comply with the statutory provisions.
Laser pointer irradiating the apparent brightness of the light spot is not only dependent on the power of  laser flashlight price  and the reflectance of the surface, but also on the color vision of the human eye. For example, because the human eye is the wavelength of the visible spectrum most sensitive to green light 520-570nm for greater sensitivity red or more blue wavelength has decreased, so that the same green light from brighter colors than other power
During the use , the green laser consumes more power and distritue more heat than the red laser. This can have an influence on the stability of the laser crystal and even burn the laser diode. In the interior of good quality green laser module, there is a protection circuit that will automatically cut off the power source when the temperature has exceeded the limit to protect the laser diode, it can be turned on when the temperature returns to the level normal. Conversely, poor quality green laser module is often burnt due to a long period of use.

The red laser power consumption is one-tenth that of the green laser, the distributed heat is much lower than that of green laser, so it is not necessary to turn off the red laser to turn it on again.
lasers with output power up to 5 mW for CW lasers or five times the limit of class 2 lasers repetitive pulses or scanning in the spectral region of 0.4 microns to 0.7 microns. However, the illumination at any point of the visible beam must not exceed 25 W / m2. For other spectral regions, radiation  astronomy laser pointer  should not exceed five times the ELVs of Class 1 and illuminance or specified output energy exposure. The protection of the eye against the visible laser radiation is usually provided by defensive reflexes of the eye, especially the blink reflex. However, it is recommended not intentionally keep the eye in the beam.
The beam penetration into the eye through an optical device (eg binoculars) is  dangerous .