P3D Re: project or view

[Bill Davis <bd3d@xxxxxxxxxxxxx>]

>From: Patrick Boeckstijns <pboeckst@xxxxxxxxx>


>Two other (important) questions however have not been answered :
>
>1)Where do I find replacement bulbs ? (I can't use the projector since one
>of them has burned).

Try BulbDirect at 
http://www.bulbdirect.com 
or phone 716-385-3540

That would be the CLS/CLG lamp 300w, 120 v .

>2)What kind of material the screen is made off ? I remember this subject
>has been discussed before and it was said then that ground glass would
>depolarise the light. However I can't remember what does work and the
>archives seem to be unavailable  for the moment.

I think the screen *is* made of ground glass, or at least it is on my 2-D
Project-or-View (Model 260). There is some uncertainty about exact the
nature of the ground surface and/or the process used to create it.

I think the chemists agreed that due to internal striations caused by the
forming process, plastic *would* depolarize.  Some on this list however
have reported good results using frosted drafting mylar, which is a
plastic, albeit fairly thin.  My own testing with mylar exhibited too much
ghosting for my tastes. 


>Thanks,
>Regards.
> 
>P. BOECKSTIJNS



Best regards,
Bill Davis
mailto:bd3d@xxxxxxxxxxxxx


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