hi mathias,
what defines the size?
is it the wire in the bulb that defines the size or is the body of the bulb as the wire only brings the halogen to lighten.
so then the body of the 50W bulb you posted is nearly the same size like the light chamber of the cdm-t.
and may be you had to cut away too much from the 50mm reflector...
i have a 56mm reflector... the problem is i want to build a compact pj so i can't afford to use a 110mm reflector or even bigger...
i had very good results with this reflector as the beam was VERY intense...
i also tried a 110mm reflector and the bulb was as big as the 20W bulb in your post
and i had a PAR 20 bulb from Osram (Halopar 20) which had the same bulb in it like the the PAR 30 bulb and a reflektor with only 57mm...
only differences between those 2 was the angle of the light, and i want as less angle as possible the make a paralell beam for the condensor...
so my question is:
is there a specific rule that defines the size of a reflector for every lamp?
i thought:
the smaller the reflector the smaller the light angle the intenser the light...
what were the problems with the 50mm reflector?
i am trying to build a light machine like ace did, and i thought the intensiest light would be best; to be continued...