Article View: sci.electronics
Article #20235Re: deflection systems
From: John B. Nagle
Date: Thu, 22 Dec 1988 17:44
Date: Thu, 22 Dec 1988 17:44
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In article <10960009@hpldola.HP.COM> paul@hpldola.HP.COM (Paul Bame) writes:
>I once thought about laser-deflection using electrostatically deflected
>mirrors in a vacuum. You could really reduce mass and air friction.
It could be done even in air. Kynar (tm) film, which is an electret,
can be deflected at high speed with about 2mm separation from a conductive
plate, 400VDC, and microamps of current. This is how the Polaroid sonar
transducers work. One could probably build a deflection system this way.
But it's not clear that there is any fundamental advantage over magnetic
or piezoelectric techniques.
John Nagle
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!husc6!cmcl2!rutgers!mailrus!purdue!decwrl!labrea!glacier!jbn From: jbn@glacier.STANFORD.EDU (John B. Nagle) Newsgroups: sci.electronics Subject: Re: deflection systems Message-ID: <17923@glacier.STANFORD.EDU> Date: 22 Dec 88 17:44:32 GMT References: <Dec.6.06.33.54.1988.4315@topaz.rutgers.edu> <10960009@hpldola.HP.COM> Reply-To: jbn@glacier.UUCP (John B. Nagle) Organization: Stanford University Lines: 12