This is a off topic discussion from the "egg yolk" so i'll bring it here.

A parabola like a searchlight can keep the heat source far away from your sensitive lcd. Beam the light to the projector. You could have the light box near an outer wall or in the atic. Fans to cool it will not bother your movie experience!

You can have a reduced size projector in the living room.

What do you think?

It's different... it's semi permanent (to your house or what have you), but I think there is a draw back. The parabola with the lamp doesn't collimate the light nice and neatly, I think the greater the distance the greater reduction in brightness. Does anyone remember when I have the parabola 23ft from the wall?

I suppose there is a fix though, maybe... I don't know. We could take the idea of a light tunnel that you posted in that same thread. That would allow the light to be contained instead of dispersed before it reached the LCD panel. But those light tunnels look to be even worse for allowing light to exit in a highly diffused manner.

But then maybe you are only thinking of having the parabola 6ft away? We know that it is possible to maintain an 18" light pattern at 32" from the wall, I think I even had this at 72" from the wall, I forget.

Either way though, I am almost sure that the further back the parabola is from the lcd, the less bright the resulting image will be, yet at the same time it will become more evenly lit with distance.

Sure, this might not be the exact parabola to do it. Chances are people would want to find a reflector from a 12"-16" searchlight. I might be able to get one down at the docks from a starving fisherman. These would probably be designed for a MH bulb.

Ive looked on ebay and i didnt see anything apropriate. It this point its more about the concept. Light beam to fresnel, lens, fresnel, lcd. The projector could be quite light in a ceiling mount.