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Old 08-05-2007, 04:36 AM #1
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Default HELP - How do I project a rectangle

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?


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Old 08-05-2007, 09:29 AM #2
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Default Re: HELP - How do I project a rectangle

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
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Old 08-05-2007, 03:36 PM #3
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Default Re: HELP - How do I project a rectangle

What kind of scanner, how do I set it up, who makes em, etc.
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Old 08-05-2007, 05:30 PM #4
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Default Re: HELP - How do I project a rectangle

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.
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Old 08-06-2007, 03:10 AM #5
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Default Re: HELP - How do I project a rectangle

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