Simple Wide Angle Projector

[mdemers]

I'm looking to build a $100 white light projector to project a pattern of lines. The final image at an object distance of 5 feet must be at least 44" x 30". The image should be close to being in focus and the object format is TBD. The off-the- shelf projection lenses are too expensive and the focal lengths are too long anyway. My light source is a 250W incandescent bulb.

 

[IRstuff]

Does it have to be white? Lasiris and others make diffrative projection systems that might fit the bill.

http://www.stockeryale.com/illumination/lasers/accessories/diff_gratings.htm

TTFN

 

[mdemers]

Yes, it does have to be white light, or at least in the visible spectrum. Laser light is not allowed, but thanks for the link.