I'd like it to be one of the 4.5MW~5MW ones so I can point to the sky 'n stuff
Why would you want to point a laser towards the sky?
Illuminating Facts About Laser Pointers
FDA Consumer magazine
May-June 2005 Issue
By Linda Bren
Laser pointers are misused when they are directed at people or treated as toys. The light energy from a laser pointer aimed into the eye can be more damaging than staring directly into the sun. And the startling effect of a bright beam of light can cause serious accidents when aimed at a driver in a car, a pilot in a plane, or even a person holding a cup of hot coffee.
Suggested Safety Rules
The following safety rules are a few "common sense " rules recommended for laser pointers:
NEVER point a laser pointer of any power at anybody. Pointers should be used to point out or emphasize inanimate objects such as slide images, pipes, asbestos, laboratory apparatus, be used in non-human scientific experiments, etc.
Avoid "mirror like" (specular) targets and NEVER - NEVER stare into a pointer! Also, NEVER view a laser beam using an optical instrument (such as binoculars, microscope, etc.) unless the procedure has been technically approved by appropriate safety personnel.
Always use LOWEST power rating possible and highest divergence where possible. No laser pointer rated at a Class 3B should ever be used without special provisions-such as medical surveillance and approval of a LSO.
These laser pointers are not toys and should not be used by juveniles. As a aid for this suggestion, it is recommended that the batteries be taken out of the pointer when not in use.
Some places may wish to require facility registration of these devices in order to impress on users the need for safety awareness. The appropriate safety personnel should require that all laser pointer be correctly and conspicuously labeled with the correct warning sign. Facilities may wish to develop their own one page advisory note for all registered laser pointer users.
Safety personnel and pointer users should be aware that wavelengths around 400 to 500 nm (i.e. blue light region) can cause biological effects of a photobiological nature (e.g. like "sunburn").
Lasers operating at the peak of the Photopic Response (Figure 1) can produce significantly greater evoked response and should be used with great caution.
One should NEVER use a laser pointer above 5 mW
Edited by Scarlett, 28 December 2005 - 09:55 AM.