Article View: sci.electronics
Article #22044Re: Are checkout-counter lasers hazardous?
From: Stephen King
Date: Tue, 09 Jan 1990 13:18
Date: Tue, 09 Jan 1990 13:18
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In article <446@sierra.stanford.edu> siegman@sierra.UUCP (Anthony E. Siegman) writes: >I'd be very surprised if a supermarket laser scanner were hazardous. They aren't. The output of the laser tube is VERY carefully controlled. The scanning is done via a rotating mirror, so the beam never lingers on one spot, but is always in motion. There are numerous safety features which shut the laser off should emmission exceed a certain amount, or should the scanning motor fail. Nevertheless, it's still not a good idea to look directly into one when it is operating.
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Path: arc1-ca.pugleaf.net!utzoo!dciem!king From: king@dciem.dciem.dnd.ca (Stephen King) Newsgroups: sci.electronics Subject: Re: Are checkout-counter lasers hazardous? Message-ID: <2826@dciem.dciem.dnd.ca> Date: 9 Jan 90 13:18:57 GMT References: <189@bucsb.UUCP> <446@sierra.stanford.edu> Reply-To: king@dretor.dciem.dnd.ca (Stephen King) Organization: D.C.I.E.M., Toronto, Canada Lines: 10