would this work

http://www.blunt.co.uk/hydroponics-shop-uk...ct-i/index.html

if you read the full page it does say it can be used for mh lights up to 600w

ive never seen that before......i dont like the sound of water in my projector, but cool all the same

most dont like the sound of water near their computer ither but they do it ...

It probably wouldn't work....

Water has it's own optical characteristics... let alone running water between the bulb & rear fres. I couldn't imagine the light output being very uniform.

well hummm... ive been thinking about it...

lets say you replaced the temp glass with a sort of glass water block

1 you could move the lamp closer

2 you still keep a fan but its not at importan as they are now

3 if you look at a fish tank you and see through it pretty good if the water dosent move...

I also belive the rear frensel would do a find job of evening out the light as it passed through it....

I think the refractive index of water would have an impact. It might work if it was put after the light has been collimated by the lampside fresnel?

can someone tell me what this mean ... lol http://www.philiplaven.com/p20.html

different wave lengths refract differently, as a function of wavelength to angle of incidence i think, ie chromatic aberration. it is why a prism splits white light into colors.

ya thoughs are some big words ...lol...thought it might help with the water refractivity