P3D Re: Halogen bulbs for projectors

[Linda Nygren <lnygren@xxxxxxx>]

Dr. George A. Themelis wrote:
> 
> Dalia wrote:
> 
> >All the above named projectors can use halogen bulbs that
> >provide a little more lumens (about 10%) and a much longer
> >life than the CZX bulbs...
> 
> My measurements showed that the halogen bulbs actually
> resulted in less lumens in both my 116 and 716 stereo
> projectors.  The difference was enough to convince me
> to stick with the original CZX bulbs.  Tom Hubin gave
> an explanation relating to the size of the bulb filament
> and the condenser lenses in these projectors.
> 
> George Themelis

My observations when I replaced the bulbs in my 716 projector lead me to
believe that there is probably no *significant* difference in light
output between the standard and halogen bulbs, but the longer bulb life
will still be nice if this is really true in actual use. (Then I won't
have to switch back to the original bulbs that I saved as spares.)
-Linda