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From: junk@ur-tut.UUCP (Jan Vandenbrande)
Newsgroups: net.auto
Subject: Re: Laser Pulse Speed Enforcing
Message-ID: <16@ur-tut.UUCP>
Date: Tue, 4-Mar-86 12:51:26 EST
Article-I.D.: ur-tut.16
Posted: Tue Mar  4 12:51:26 1986
Date-Received: Thu, 6-Mar-86 21:35:34 EST
References: <378@ur-tut.UUCP> <843@kitty.UUCP> <442@utastro.UUCP> <416@watmum.UUCP>
Reply-To: junk@ur-tut.UUCP (Jan Vandenbrande)
Distribution: na
Organization: Univ. of Rochester Computing Center
Lines: 12
Keywords: Laserpulse enforcing, small beams.
Summary: Concentrated beams might cause blindness

.....
	An issue was raised that when the laserbeam is narrow enough it
would be very hard for the detector to catch it.
Well first of all it is not certain that the beam will be very narrow.
Solid state laser tend to have a larger fan out than the regular kind.
I guess that could be corrected but how much?
A second, more important issue are the dangers involved with a narrow 
laserbeam. You don't need alot of power to cause severe eye damage.
I don't know whether such a beam would be able to penetrate through 
the windshield. If it does there could be some interesting legal
implications.
Jan.