12 Mar
2012
12 Mar
'12
4:59 p.m.
On 12 Mar 2012 at 14:46, Eric Smith wrote:
I've never seen that kind, but it sounds very
cool! The projection
displays I've seen use an array of twelve incandescent bulbs, film
with a corresponsing array of twelve glyphs to act as masks, and a
plastic molded piece that provides twelve lenses.
Usually used on some 50s military gear, if memory serves. encased in
metal, perhaps 10-12" in length with connector on the rear and a
plate retained by screws for (single) bulb replacement. Retention
screws in the front bezel; very clearly meant for rough service. I
can't find an image of one on the web.
I don't recall who made them.
--Chuck