| ??? 05/04/09 00:30 Read: times |
#165029 - Let's consider the commercial products. Responding to: ???'s previous message |
Steve M. Taylor said:
Richard Erlacher said:
I've seen a few projected laser image systems, most of them pretty small, but here's one that seems similar to the majority.
http://www.circuitcellar.com/flash2002...stract.htm I may be missing something. I can see how he goes from left to right, how does he go up and down ? The spinning mirror does the horizontal axis, so to speak, and the one moveable mirror axis is rotated over a narrow field, to produce the vertical deflection. That demands far less precision that two moveable axes. ...10 to 45Watt lasers......(from internal link) ...and Bragg cell modulators...not a DIY project - high voltages and high power, class IV lasers. No question about it, those are not common DIY lasers, but the article does show that that (rasterized display) is how folks are doing it. Steve
I do know a couple of DIY'ers who have, in the past, built large CO2, and YAG, lasers. One of them now has a business that manufactures laser engraving machines. I point the latter out not to suggest that this is trivial, hence suitable for DIY'ers, but rather to show that serious commercial companies, consider the raster display realistic for this sort of display, while I've been unable to find any manufacturers of laser displays other than the ones suited for rock concerts, where they just do stuff that's "kewl" rather than useful, and, incidentally, where precision isn't critical. RE |
