Re: New XY Monitors

you gotta focus the energy into the fiber at about .2mm point to get anything usable out
the other end... then you have to collimate on the output side to counter act focusing
you did on the other end... which give a low divergence, not as good as a laser... but
you will have to do at least a 10-20 degree optical scan angle or all the lines are
going to overlap..

here is a site on someone that has done all of the laser methods you are describing
http://members.aol.com/hpspt/scan1.htm

this guy has done better than I've ever seen with speakers.. can scan a dog figure...
from the picture you can see that it's not a stable picture... but this was considered
not possible before...

if you havn't seen the vector games in Laser yet... check it out... the video shows the
galvo's, amps, Color Control in the beginning of the video.. http://games.lasers.org

Later,

Rob.

Rodger Boots wrote:

> I was going to fire the three bulbs through their respective color filters, then
> focus them into short pieces of fiber optics which would then position the 3 beams
> into 3 VERY closely positioned parallel beams. Hopefully that was going to keep
> everything well converged and focused all the way to the screen.
>
> I'm probably missing something here, but it sounded good at the time. Optics AREN'T
> my field of expertise. I would have rather used very bright LEDs, but I doubt that
> I would have gotten enough useful screen brightness.
>
> Zonn wrote:
>
> > On Fri, 17 Nov 2000 14:38:37 -0600, Rodger Boots <rlboots@cedar-rapids.net>
> > wrote:
> >
> > >I wouldn't be using their power supply, I need one that can modulate the lamp
> > >current at video speed. Also, wouldn't be running the bulb anywhere near full
> > >brightness.
> > >
> >
> > I'm a bit confused at how you would focus your light sources.
> >
> > You will need to focus them down to a point on the galvos / piezo's, would you
> > then have the light go through a second lens to re-focus it for projection? And
> > would the second lens need to be deformed in such a way as to correct for the
> > edges of the projection (which will be farther from the source than the center)?
> >
> > It would of course be more convenient if the projector could sit on the ground
> > and project upwards, which is even more of a focus problem.
> >
> > -Zonn
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>
> --
> Windows:
>
> 32 bit graphical interface for a
> 16 bit patch for an
> 8 bit operating system written for a
> 4 bit processor by a
> 2 bit company that can't stand
> 1 bit of competition.
>
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Received on Sat Nov 18 12:09:00 2000