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Mercredi, Août 05, 2015

An inexpensive 50mw Green Laser was found to emit 20 mW of infrared radiation during normal use. This is potentially a serious hazard that would not be noticed by most users of such pointers. We find that this infrared emission derives from the design of the pointer, and describe a simple method of testing for infrared emissions using common household items. The main danger associated with GLPs occurs in cases of low conversion efficie ncy from infrared to visible radiation. This can result from the manufacturing process. Normally, if the conversion efficiency is high, the inter-cavity infrared power will be low because conversion to green light draws down the power of the infrared. However if the conversion efficiency is low, then the inter-cavity infrared power can build up to high levels, resulting in strong infrared emission. In the extreme case of zero conversion efficiency, it would be possible for the GLP to emit intense infrared light but no visible green light. Inclusion of an infrared-blocking filter in GLP design can prevent such infrared emission. As shown in Fig.

Inexpensive green laser for sale are produced in vast quantities. Few that we have seen carry traceable manufacturers' marks that are visible to the consumer. Widespread production of this commodity item is likely accompanied by inconsistent adherence to practices of safe design 5 and/or quality control. The drive to lower cost on such commodity items may encourage manufacturers to eliminate the infrared-blocking filter, resulting in the type of hazard described here, especially when the conversion efficiency from infrared to green is low. The green laser beam projects at a wavelength of 532nm. Excellent for business meetings, presentations, exhibitions, and educational instruction. 

1000mW Green Laser Pointer  Easy to take along body show

Though Blue Laser Pointer with blue beams are the most commonly used, more powerful laser pointers with blue and green beams are available as well. Green-beam laser pointers achieve their color with a higher beam wavelength than red pointers. The increased wavelength of green beam laser pointers requires more energy to maintain, and this energy can be focused to perform actions that are difficult with red laser beams. If properly focused, the light from a green beam laser pointer can transfer enough energy to light a match.

There are many times when users are using green laser pointer. This color green laser light is just the most popular and the most applicable one among those of visible and visible lasers. Among those of visible laser spectrum, High Powered Laser Pointer is just emitting the most sensitive green color laser light, thus users can always get the most visible green laser beam and green dot emission on all targeting surface.

http://www.buylaserpointer.com/2000mw/p-71.html

http://www.notredeco.com/pg/article/61357_blue-laser-pointer-10000mw-pointer-as-the-light-source

buylaser: 05:55 | Comments
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