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HELP - How do I project a rectangle

rectangle

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How do I project a rectangle, 9 by 24 inches, at a distance of 50 feet? Color and brightness not really important, barely visible at night is OK. What machines can do it, at what cost?
 

Tallaxo

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Well without a very precise scanner you will have a very hard time projecting something like that over that distance. I am not saying it is impossible, but very difficult.

Jase
 

Aseras

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I use a rectangle type projection with my work, for 3d laser imaging. basically you use scanlines just like a tv in a square. the optics are very expensive.

A cheap way to do it would just to use a bare diode with the right lense. The diode would emit a line and then you could a beam expander type optic to open the line up into a rectangle. the beam expander is adjustable so you could make it smaller or larger to suit. 9x24 is kinda large but anything over about 5mw should be visible at night.
 

Things

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you might be able to get someone to make you a rectangle holographic lens?
 




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