Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!agate!garnet.berkeley.edu!macklin
From: macklin@garnet.berkeley.edu (Macklin Burnham)
Newsgroups: comp.dcom.lans
Subject: IR ethernets
Message-ID: <22125@agate.BERKELEY.EDU>
Date: 27 Mar 89 21:23:26 GMT
Sender: usenet@agate.BERKELEY.EDU
Reply-To: macklin@garnet.berkeley.edu (Macklin Burnham)
Organization: University of California, Berkeley
Lines: 12
Keywords:infrared, lasers, safety





[reposting, with blnk lines. sorry]

What about the issue of laser safety? The LACE unit has a 20mw laser in it,
and is classified as a class III-b device. How do you prevent someone from
looking into the transmitter long enough to incur retinal damage? Our 
applications would involve unattended operation of these boxes on rooftops,
and I'm seeking reassurance that the transmitted beam is not powerful enough,
or not tightly enough focused,to present a hazard.