| Author | Message | ||
     Giorgio Bogoni Rating: N/A |
I'm planning a spexfree rear-projection. I was thinking about mounting a giant lenticular screen on an opaque glass and project on the glass using an 800x600 LCD-projector connected to a PC. I'd interlace vertically the two images in each frame of the video. Do you think it may work? How many lenticles per inches resolution would I need? How far from the screen can be (or must be) the observer? Had the observer to be exactly in the middle of the screen? Would be better to interlace more than two points of view? (like Philips does in autostereo monitors) Where can I buy the lenticular material? I remember something like this has been done in Russia a long time ago ... Thanks for support, Giorgio | ||
| Eric Lindstrom Rating: N/A |
lenticular, huh? should work, just a few things... 1) don't make the projection surface opaque, make it translucent. opaque means no light gets through, and you don't want that. Don't think I'm a jerk because I say this, I just don't want you to order an opaque screen only to find out rear-projection won't work with it ^_^ 2) the lenticular surface and the projected image will have to be closely mated. I assume you are getting a custom lenticular here, since I've never seen one that big. Great care in producing media that will work with the size of the ridges in the lenticle. Remember, the bigger your projected image, the bigger those pixels get. worrk closely with the guy making your optics, and tes, test, and re-test. once you get that thing to work, mark off the projector's settings and focus, as well as it's physical location (mount it permanently if possible). It may help to make the screen movable in fine increments as well. 3)the observer could be anywhere, that's the nice thing about lenticulars. Also, in lenticular images, you need an average of three (3) points of view. this is subject to the kind of lenticle you have (does each "ridge" have 3, 4, or more facets). Learn more about lenticular 3D before you delve into this aspect of your project!!! 4)for lenticular lenses, try: American science & surplus http://www.sciplus.com Do a web search for lenticular screens or lenses. also, many big-screen TV's use a translucent lenticular on the front. look into that possibility as well. Good luck, that sounds like a cool (but complex) project!!! -Eric L. | ||
| Giorgio Bogoni Rating: N/A |
Hi Eric, yes, translucent! That's was I was thinking about (a policarbonate screen) but maybe even a transparent one should work. Philips autostereo monitor uses 7 points of view! I know I have to learn more, I wrote here to learn more! Thank you for support. Giorgio. |
