laser scope

On Monday 23 March 2009 16:39:20 Jim Battle wrote: Yes, but the bandwidth of an LED laser is still pretty high. There are a few laser projectors on the net, but this one goes into the detail of making your own galvos. http://elm-chan.org/works/vlp/report_e.html Just slightly off topic, this is a good foundation for a mechanical television projector. Modulate the laser to a video source and attach the galvos to two synchronized sawtooth generators. For PAL, you could get away with a 5MHz bandwidth (about 250 vertical lines visible). Mind you the horizontal galvo will be screaming along at 15625Hz, which is pretty darn fast, faster for NTSC, and I reckon the laser would have a hard time keeping up. Maybe a Scophony system would be more appropriate. :) In any case, an oscilloscope will work by far better for TV and for vector displays, even if the screen is smaller. They usually all have a Z axis input at the back. Alexis