<html><head></head><body><div class="ydpa074aa7yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div><div dir="ltr" data-setdir="false">I had an effect in mind that would benefit from a video projector that used ultraviolet light. I realize that there is no such thing on the market. But, I wonder how hard it would be to create such a thing.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Version A) If I hack a DLP projector that uses a discharge lamp, I imagine that lamp puts out some UV. Perhaps simply placing a UV passing filter in the optical path, and also removing the color wheel, would give me a UV projector? <span>Though, I wonder if there may be other things in the optical path that may block UV.</span><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Version B) Decades ago, I recall using a video projector system that consisted of an LCD flat panel, that was simply placed on the surface of an overhead projector. Such a system seems to be easy to hack into a UV projection system. I've seen a video to hack an LCD screen to make a projector. <a href="https://www.youtube.com/watch?v=YfvTjQ9MCwY" rel="nofollow" target="_blank">https://www.youtube.com/watch?v=YfvTjQ9MCwY</a> I know in the panel itself, there is a color filter system to color each pixel. But, I doubt I can simply remove the color filter part. Does anyone know otherwise? I know there are 3-LCD projectors that put light through 3 separate LCDs, and those LCDs would not have any color filters on them. But, they would be small LCD screens, and would seem to depend on a very small and well focused light source.<br></div><div><br></div><div dir="ltr" data-setdir="false">I am not at all certain I will use a UV projector for the effect. But if it were a very easy thing to try out, I may at least play with the idea. Any comments?<br></div><div><br></div><div class="ydpa074aa7signature"><div style="font-family:Helvetica, Arial, sans-serif;font-size:16px;"><div dir="ltr" style="font-family:Helvetica, Arial, sans-serif;font-size:16px;">-Joe<br></div></div></div></div></div></body></html>