Have you learned more than you need to know about projectors? Would you like to find an applciation for all you have learned? I am looking for someone to think out of the "projector box" and help us build a prototype.
Please contact me for further information.
Thanks.
Please contact me for further information.
Thanks.
I am looking to build an application that requires a projector. The application has less stringent specs than a consumer projector, but requires an innovative approach to create a low-cost product (significantly lower than most consumer projectors). And we are not trying to project movies, but rather lower-res computer generated animaitons...
We are a small design firm looking for help on this project.
We are a small design firm looking for help on this project.
Glev,
I assume that this is some kind of graphics software application and you want a large screen. Will you need to look at programming code or just simple objects. If it is possible to stay with one color and use it like a gray scale you should be able to use a simple plastic injection molded asperical lens. About 13 USD from GS plastic optics.
Depending on what your screen size and distance needs to be you may be able to adapt some kind of existing lenses. I must dispel one myth though. Movies actually require lower resolution than simple graphic images because your eye can blend together the many multi colored dots into an image. But with graphic objects you usually need sharp edges or people will not want to look at the objects. This actually requires somewhat higher resolution but would still be easy to obtain with a modern moderate sized LCD.
If I had a small projector that was to be used as a tool for projecting an axillary screen I would want something small, light and plastic that could easily be moved and set up on a desktop next to a regular computer monitor or used to project a larger image if necessary
Hezz
I assume that this is some kind of graphics software application and you want a large screen. Will you need to look at programming code or just simple objects. If it is possible to stay with one color and use it like a gray scale you should be able to use a simple plastic injection molded asperical lens. About 13 USD from GS plastic optics.
Depending on what your screen size and distance needs to be you may be able to adapt some kind of existing lenses. I must dispel one myth though. Movies actually require lower resolution than simple graphic images because your eye can blend together the many multi colored dots into an image. But with graphic objects you usually need sharp edges or people will not want to look at the objects. This actually requires somewhat higher resolution but would still be easy to obtain with a modern moderate sized LCD.
If I had a small projector that was to be used as a tool for projecting an axillary screen I would want something small, light and plastic that could easily be moved and set up on a desktop next to a regular computer monitor or used to project a larger image if necessary
Hezz
Or you could say nothing in public domain and maybe get some "compensation" if you talk to the guy directly. 😀
I agree with Hezz that you should not skimp on the final objective lens - fuzzy edges are terribly distracting regardless of how low your resolution is. The largest cost in a budget projector will still be the LCD panel. If you can find yourself a suitable panel that is 4" diagonally or less, then you might benefit from a Fujinon lens from www.surplushed.com. I think they cost $10 and have an extremely high quality. They only work with panels 4" and smaller though, so that's something to think about. Other than that you'd only have about $50 of parts to account for (maybe less) assuming that you can use a cheap 300w-500w halogen lamp instead of metal halide (short term use only since those blow out a lot without a line conditioner and also can easily fry your LCD if you're not careful). Let me know if you need help with your design - I'm always happy to help with stuff like this just for the sake of being a part of it!
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Alan, DIY Labs
http://www.diylabs.org/projector/
info@diylabs.org
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Alan, DIY Labs
http://www.diylabs.org/projector/
info@diylabs.org
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