Ok, after I did sore research, I've found that elliptical reflector are the best to collect the max of light.
I'm planing to build one myself ( don't ask me how! ).
I'll put a condenser lens at the focal point #2 and the light at focal point #1, but the reflector will go all the way to the f2 where the lens will be so there will be no light escaping it.
But I'm affraid with heat, will my bulb overheat this way because there will be no place to let some air to pass? can it work?
I'm planing to build one myself ( don't ask me how! ).
I'll put a condenser lens at the focal point #2 and the light at focal point #1, but the reflector will go all the way to the f2 where the lens will be so there will be no light escaping it.
But I'm affraid with heat, will my bulb overheat this way because there will be no place to let some air to pass? can it work?
Try talking to a local theatrical lighting supply or rental company. Most sell or rent fixtures called "Lecos" that ellipsoidal reflectors. The reflectors are typically made of polished aluminum and will either have openings at the rear vertices or in the side. If you explain to them your interest you may be able to pick up a decent reflector from a wrecked fixture for just a couple of bucks.
The reflectors often work with 750 and 1kw quarts halogen bulbs without any special respiration. A 400watt HTI lamp with a little air flow added shouldn’t be any problem.
The reflectors often work with 750 and 1kw quarts halogen bulbs without any special respiration. A 400watt HTI lamp with a little air flow added shouldn’t be any problem.
Of course!
It does make sense.
Had a friend who used and old headlight as a parabolic reflector into a C band LNB for SCPC satellite reception (so he claims).
Just make sure you get all of the salad dressing off the bowl, if it gets on the bulb it will make it blister. ( a statement meant to be ironic, but I refuse to use emoticons )
It does make sense.
Had a friend who used and old headlight as a parabolic reflector into a C band LNB for SCPC satellite reception (so he claims).
Just make sure you get all of the salad dressing off the bowl, if it gets on the bulb it will make it blister. ( a statement meant to be ironic, but I refuse to use emoticons )
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