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Article #22008Re: Can lasers be deflected electroMAGNETically?
From: Tom Blockovich
Date: Fri, 05 Jan 1990 22:16
Date: Fri, 05 Jan 1990 22:16
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In article <1989Dec31.224613.23057@utzoo.uucp> henry@utzoo.uucp (Henry Spencer) writes: >Most are difficult to implement and give quite small deflections, >which is why things like laser printers still use spinning mirrors. >- ^^^^^^^^^^^^^^^^^- A laser printer that I am familiar with is the Xerox 8700 (DEC LN01), and yes it does use a spinning mirror (polygon). But there is a video modulator that deflects the laser beam. The deflection is not alot, only about 1/4" at a distance of less than a foot. That could be considerable farther away though. The video modulator is used to deflect the beam so that it will hit a stop, in effect turning it off and on. Tom Blockovich at the U of U tom@cs.utah.edu (801)581-5805 at Digital Tom Blockovich @ slo (801)565-3043
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!ucsd!helios.ee.lbl.gov!hellgate.utah.edu!cs.utah.edu!tom From: tom@cs.utah.edu (Tom Blockovich) Newsgroups: sci.electronics Subject: Re: Can lasers be deflected electroMAGNETically? Message-ID: <1990Jan5.151624.29170@hellgate.utah.edu> Date: 5 Jan 90 22:16:24 GMT References: <6220004@hpcupt1.HP.COM> <1989Dec29.211335.2414@utzoo.uucp> <13100@cit-vax.Caltech.Edu> <1989Dec31.224613.23057@utzoo.uucp> Organization: University of Utah CS Dept Lines: 18