Hello,

Has anyone experimented with some kind of IR diffuser? I figure this would be the best way to remove hotspots and pan the ir light evenly throught the surface on a DI setup.  I guessing the Microsoft surface probably uses something similar. Maybe some kind of specail glass or plastic?

I’ve been thinking about the same thing. As I’m about to try halogen with a IR bandpass filter. And was thinking of adding some kind of deffuser to the bp filter.

please let me know if you have any luck.  Today i wanted to try the plastic cover of a fluorescent light.

I have been using Halogen with bandpass filter.  I found the light from halogen is already much more diffused than the light from IRLEDs.  However, this is a larger project, so I can afford to put the light source far away from the projection surface.

overload - 24 May 2009 07:09 AM

I’ve been thinking about the same thing. As I’m about to try halogen with a IR bandpass filter. And was thinking of adding some kind of deffuser to the bp filter.

Hi Overload,
If your putting the Halogens in a box, you will want good ventilation.  They put out a buttload of heat. 

David

yes cepdave, It will. But then again, I have 6+ fans I can put in the table. :p And placing them the right way, it would not be that bad You dont need to set the filter directly on the halogen. By using a little distance, you will get less heat, and wasyer cooling. And, the heat always raise. By helping the heat to escape, it will be more efficent and less heat If you understand where i’m going with that.

I used a sheet of LEE White http://www.lee-filters.de/ on top of my LEDs.
It seemes to do the job. Greetings Jewe

What is Lee white sheet?  Paper, plastic, other?  Anything similar to this i can purchase in the US?