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- Path: sparky!uunet!spool.mu.edu!uwm.edu!ogicse!news.u.washington.edu!stein.u.washington.edu!hlab
- From: dstampe@psych.toronto.edu (Dave Stampe)
- Newsgroups: sci.virtual-worlds
- Subject: Re: TECH/INFO: $10 Crt's announce and question
- Message-ID: <1992Nov22.040154.6461@u.washington.edu>
- Date: 21 Nov 92 14:56:45 GMT
- Article-I.D.: u.1992Nov22.040154.6461
- References: <1992Nov21.051245.24899@u.washington.edu>
- Sender: news@u.washington.edu (USENET News System)
- Organization: Department of Psychology, University of Toronto
- Lines: 35
- Approved: cyberoid@milton.u.washington.edu
- Originator: hlab@stein.u.washington.edu
-
-
- cnews@umr.edu (UMR Usenet News Post) writes:
- >
- > Mini camcorder CRT,manufacturer Matushita
- > Original B&W CRT used in view-finders for
- > many comcorders and VCR camaras. 1-1/2" diag
- > screen. 7 pin subminature base and external second anode
- > connections. 4-1/2" O.A. length $9.95
- >
- >My question is if this is something that would be feasible to use
- >for HMD. I am a second year EE and have not yet learned enough
- >te evaluate the usefulness. How much support electronics would
- >be neccessary to utilize these CRT's. I have been following sci.virtual-
- >worlds for over a year and have yet to see in depth description of
- >the methodes that people are using for the garage HMD's(and I have
- >many meg of archives of this newsgroup I have looked through). In
- >particular Dave Stampe seems to be leading this effort and any detailed
- >information would be very appreciated.
- >
- Quite a bit, unfortunately. You'd actually be better off buying camcorder
- viewfinders (about $100 each) and either using them as-is (about 20-40
- degrees FOV) or adding your own optics to get a larger FOV. A large FOV
- from such a small CRT usually needs custom-designed magnifying mirrors,
- though, as a lens-based optical system gets pretty complex.
-
- I've had success with larger tubes (3 1/2 inch) and simple Fresnel lenses,
- but the weight can be a problem.
-
-
- --------------------------------------------------------------------------
- | My life is Hardware, | Dave Stampe |
- | my destiny is Software, | dstampe@psych.toronto.edu |
- | my CPU is Wetware... | dstampe@sunee.uwaterloo.ca |
- | Am I a techno-psychologist, or just an engineer dabbling in psychology?|
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