- Apr 28, 2009
MORE DETAILS post#150 - post#170
Edited(08.29.2011): Biaxial Mirror : Post # 156
Edited(05.28.2011): Block Diagram: No Blanking! Post # 155
Edited(01.15.2011): Closer view: Post # 154
Edited (01.14.2011): Blanking what? Post # 150
Edited (12.08.2010): New! Block Diagram for Electronics of Kuntman's scanner/ projector.
Hi. I begin to explain some details of KUNTMAN's scanner.
You will find below, three diagrams for the fast mirror and a diagram for high speed analog modulation of DPSS green lasers.
In this project, by means of two mirrors (which can be tilted about two perpendicular axis) we deflect the laser beam so as to scan a rectangular screen and modulate the laser source to obtain a colored image on the screen. [highlight]We don’t make use of sophisticated devices such as MEMS micromirror and acousto-optical-modulators.[/highlight]
Max. speed of the fast axis mirror is 25 KHz. That corresponds to 50000 back and fro lines per second.
In order to make use of the conventional video signal, frequency of the present scanner is tuned to 15625/2 (Hz.)
- Vibrations of both axis are resonant, therefore sinusoidal.
- Restoring force on the fast mirror is very strong and it has a very sharp resonance,
hence practically there is no phase drift;
position detectors and feedback phase control mechanisms are not required.
- Fast axis is elecromagnetically driven.
- Laser modulation is analog.
Kuntman's Color Projector/ TV:
YouTube - Laser TV - Projector (no-MEMS, no AOM)
3D Visual Effect by Kuntman's Scanner:
YouTube - 3D Visual Effect (Kuntman's Scanner, Laser Projector/TV)
YouTube - homemade laser projector tv (no-MEMS, no-AOM)
YouTube - laser tv (without MEMS)
And for some pictures:
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