Article View: sci.electronics
Article #14252Re: Laser show controllers?
From: Mike Ranta
Date: Sat, 15 Jun 1991 02:49
Date: Sat, 15 Jun 1991 02:49
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In article <1840048@hpsad.HP.COM> frankb@hpsad.HP.COM (Frank Ball) writes: >I bought an old laser disc player surplus for $70 (no there aren't any more). >It has a He Ne laser and X-Y deflection mirrors. The mirrors were controlled This is a new one to me. Every CD player I've ever seen uses an infrared laser diode. A HeNe laser would be large, expensive, hot and limited in life. Also, there are no real usable mirrors for the purposes of a light show. The laser diode, receiver diode, optics and focus/tracking servos are usually all together in an assembly about .5" square! The only other component from a player is the positioning servo that moves the above assembly along the disk. It's MUCH to slow for this application.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!ogicse!milton!sumax!polari!miker From: miker@polari.UUCP (Mike Ranta) Newsgroups: sci.electronics Subject: Re: Laser show controllers? Message-ID: <4449@polari.UUCP> Date: 15 Jun 91 02:49:33 GMT References: <1991Jun11.202312.10073@kcbbs.gen.nz> <1840048@hpsad.HP.COM> Organization: Seattle Online Public Unix (206) 328-4944 Lines: 11