"Kennedy McEwen" wrote in message
...
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See this before letting anyone "play" with your cheap green laser
pointer.

http://www.nist.gov/customcf/get_pdf.cfm?pub_id=906138
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The document link above explains some simple tests to at least check the
808nm output from a GLP using a CD-ROM and a webcam.
--
Kennedy

As someone who used to work with NdYAG lasers at 1064nm, with outputs
measured in mega-joules rather than milli-watts, I recall how seriously
the chance of eye damage was taken. Thanks for the pointer to that
document - interesting as a description of how the devices work as well as
for the warning it provides.

Cheers,
David