Design for a small IR grid scene projector

[rdargel]

I am new to the design of projectors and am in the process of trying to design and build one that will project an infrared scene consisting of a series of closely spaced vertical lines. The concept I am currently investigating involves using a high power LED IR source to illuminate a 1" x 1" Ronchi ruled glass slide. (If a 2' x 2'slide projector is better suited, this slide could be used). The projector throw is rather short, from 3' to 10' and the maximum projected image size of 3' x 3'.

Any help or reference in the design of the projector lens system, the IR source, and the overall concept would be greatly appreciated.

Thank you in advance.
Bob

 

[opticsman]

Try Projection displays E.H.STRUPP (WILEY). Most books like this will give useful general theory but won't solve your specific problem as such. System throughput ( etandue ) and light uniformity are major items to look at depending on the requirements of your end user.