tpeters at mixcom.com
Fri Mar 9 13:32:13 CST 2007
At 12:01 PM 3/9/2007 -0500, you wrote:
>And thusly were the wise words spake by David Griffith
> > Somehow I got subscribed to an optics catalog. This got me to thinking.
> > How hard would it be to cause a laser beam to sweep with the speed and
> > accuracy to be a substitute for a CRT? The upshot? Take an old terminal
> > with nasty screen burn. Cut off the gun end of the bottle, clean off the
> > old phosphor. Apply new phosphor of some kind, then mount the laser
> > rasteriser where the old gun was. Projecting raster images on the side of
> > a building would be fun too.
>I would rather do vector graphics.. :) I have seen plans on the where
>you use the voice coils from two old hard drives with mirrors stuck to
>them to bounce the laser onto a wall..
It was somewhere about 1980 that I built the basic high-power car-audio
speaker laser deflector. Mine used plastic ball-socket pivots and aluminum
stock as levers, to pivot a speaker horizontally. The laser goes from that
mirror to another one driven vertically by a second speaker.
I have a Real Laser (plasma tube NeHe) to drive it. Still works.
Haven't we all built something like that at one time or another?
481. [Humor] Shouldn't the Psychic Friends call you? --heard on the radio
--... ...-- -.. . -. ----. --.- --.- -...
tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio)
"HEY YOU" (loud shouting) WEB: http://www.mixweb.com/tpeters
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