Flat panel light source

[liteguy]

Can someone please comment on using a flat panel light source instead of a arc light source for a DLP video projector illuminator?

I've heard that etendue (acceptence angle) is an issue, but can only
find discussions involving arc lights. As well, there are some concerns about flat light sources being too diffuse.

Looking at using a very bright flat CCFL light panel.

Thanks for any and all comments.

 

[Bigg'un]

Unless it puts out 10,000+ lumens I don't think you'll get much of a picture.

 

[Squalish]

You need to be able to direct the beam to make it usable - with a diffuse light source, you can't.

 

[liteguy]

Thanks for the replies.

I am most concerned about etendue, or the "size" of
the light source area.

I've read that the optical acceptance angle is an important
factor in projectors. Will this prevent use of a larger light source?

Can a diffuse light source be attached to a collimeter
(mirrored channel) to direct the light rays towards the
screen?

If CRT projection tubes can project, why can't other diffuse
light sources project? Their phosphor screens are just like
a CCFL phosphor surface...