Joined: 27 Apr 2009
|Posted: Sun Aug 22, 2010 2:58 am Post subject: DIAGRAMS for KUNTMAN's DIY LASER PROJECTOR
|KUNTMAN's DIY LASER PROJECTOR
In this DIY 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. We donít make use of sophisticated devices such as MEMS micromirror and acousto-optical-modulators.
Max. speed attained by 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, the resonant frequency of the present scanner is tuned to 15625Hz.
Therefore number scanned lines in each frame is 625. Refresh rate is 25 frames (50 fields) per second.
Fast axis is elecromagnetically driven.
Laser modulation is analog.
Diagrams and instructions
some pictures projected by this gadget