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Re:Making a DIY text laser projector by rolph on Thursday February 07, 2019 @04:08PM (#19108608)
if the 3 beams were miniaturized as in surface mount diodes:

these for example

http://www.excelitas.com/Pages/Product/Surface-Mount-Laser.a...

and were carried or fibre coupled in a single "gimble?" there would not be duplication of moving carriage parts. a "trinitron like" emitter gun would be possible. moving a mirror as done by the author would also reduce the mass that would move at high speed while scanning across a large display field, it would then be a matter of timing a laser pulse of desired color to the desired position of the mirror set. a look at CRT television/display circuitry would be very inspirational, only in this case the color is emitted rather than stimulated by flouresence of a phosphor target.

Re:Making a DIY text laser projector by cr0sh on Thursday February 07, 2019 @04:46PM (#19108903)
Something to keep in mind is that mirror scanning for television is a very old technology, dating back to the beginnings of mechanically scanned TV:

http://dci-forum.com/back-roots-tv-history-beginning/24/mech...

Re:Making a DIY text laser projector by Animats on Thursday February 07, 2019 @05:53PM (#19109483)
Yes. There's a long history of ideas in this space. DLP projectors, with a MEMS mirror for each pixel, are one of the few successful examples. Any system where you illuminate only one pixel at a time flickers horribly, which is why this sort of thing is used for laser light shows and not much else.
Re:Making a DIY text laser projector by rolph on Thursday February 07, 2019 @06:01PM (#19109562)
- now if you can send the beam[s] through a tft display minus the backplate, and darken pixels you dont want to illuminate then scan the beam across the whole thing...This has a madmax or a maxheadroom sort of appeal to it.

i was trying to find the mems mirror around but couldnt , still looking for dead projectors to throw in the morgue of parts.

Re:Making a DIY text laser projector by rolph on Thursday February 07, 2019 @05:56PM (#19109520)
I do have wide streak of steampunk, i love retrotech, espescially when using junkyard parts and a few mailorder bits together.