[Lab] class 3a laser

Pedro C. Peres pedro at ncf.ca
Sat Mar 17 00:34:24 EDT 2012

Class IIIa

Lasers in this class are mostly dangerous in combination with optical instruments which change the beam diameter or power density, though even without optical instrument enhancement direct contact with the eye for over two minutes may cause serious damage to the retina. Output power does not exceed 5 mW. Beam power density may not exceed 2.5 mW/square cm if the device is labeled with a "caution" warning label, otherwise a "danger" warning label is required. Many laser sights for firearms and laser pointers are in this category.

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Subject: Lab Digest, Vol 25, Issue 15

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Today's Topics:

   1. GCSurplus: Laser Class 3A (Richard Guy Briggs)


Message: 1
Date: Fri, 16 Mar 2012 01:10:33 -0400
From: Richard Guy Briggs <rgb at tricolour.net>
Subject: [Lab] GCSurplus: Laser Class 3A
To: lab at artengine.ca
Message-ID: <20120316051033.GA4935 at embryo.tricolour.net>
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GCSurplus: Laser Class 3A

I don't know a whole lot about lasers, but this one looks pretty

	slainte mhath, RGB

Richard Guy Briggs               --  ~\    -- ~\            <hpv.tricolour.net>
<www.TriColour.net>                --  \___   o \@       @       Ride yer bike!
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