Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site dsd.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!ihnp4!zehntel!hplabs!hpda!fortune!dsd!ross From: ross@dsd.UUCP (Evan Ross) Newsgroups: net.physics Subject: Re: deflecting laser Message-ID: <376@dsd.UUCP> Date: Fri, 11-Jan-85 13:59:40 EST Article-I.D.: dsd.376 Posted: Fri Jan 11 13:59:40 1985 Date-Received: Mon, 14-Jan-85 03:48:42 EST References: <10800014@uiucdcsb.UUCP> <113@anasazi.UUCP> Organization: AMPEX DSD, Redwood City, CA. Lines: 5 One common means for single dimensional raster-scanning with a laser is to reflect it off the outside surface of a mirrored rotating polygon. The rotation causes the angle of intersection (an reflection) of the beam to constantly change. This can be applied to two polygons (of different speeds) to produce a two dimensional scan.