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- Xref: sparky sci.physics:22144 sci.electronics:22063
- Path: sparky!uunet!caen!uflorida!reef!rgarito
- From: rgarito@reef.cis.ufl.edu (Robert Garito)
- Newsgroups: sci.physics,sci.electronics
- Subject: Re: Lasers/collimated light in RGB? (full repost)
- Message-ID: <rgarito.726298582@reef>
- Date: 6 Jan 93 05:36:22 GMT
- References: <1992Dec30.161427.19053@radian.uucp>
- Sender: news@uflorida.cis.ufl.edu
- Followup-To: sci.physics
- Lines: 18
- Nntp-Posting-Host: reef.cis.ufl.edu
-
- Modulation Techniques:
-
- Often the scanning is done via mirrors sitting upon a voice coil
- (often like that of a Hard Drive Head Actuator). Another method
- of scanning is via a high-speed stepper motor with a six-sided
- (hexagonal) mirror attached. If you look at the angle of incidence
- of the beam as the motor spins the hexagon of mirrors, you will
- notice that the beam will scan in a straight line. Move it
- fast enough and it will look like a solid line. The same technology
- is used in Laser Printers. Now, with two hexagonal mirrors, you can
- get both x and y coordinates. Just synchronize the motors with a
- computer alone with a fast shutter of some sort (possibly using
- LCD technology) and you can draw pictures, etc....
-
- Robert Garito
- President, MicroLAN Technologies
- rgarito@reef.cis.ufl.edu
-
-