Guys I'm researching a 10.6 build, and I'm completely lost when it comes to enclosure size. It seems like the size varies GREATLY. I'm wanting an appx 10ft throw, so I've been looking at Johnzo's stuff and LL varifocal lense and fresnel kit. What I'm wanting to know most of all, is can I fit a 10.6 PJ setup into a 14"x14"x14" cube? Based off a single fold i it doesn't look like i can, or even a double fold for that matter... Any help or designs?
Thanks,
Tyson
Full Version: 10.6 Enclosure Size
Enclosure size is not only based on the size of the LCD used, and what other components (ballasts, fan power, etc.) you're trying to fit inside, but also the focal length of the projection triplet (which dictates distance between it and front fresnel).
I seriously doubt you will fit a single fold inside a 14" cube, and I strongly advise against making a double fold your first build. I could be wrong, but I don't think anyone has built a successful double fold.
I seriously doubt you will fit a single fold inside a 14" cube, and I strongly advise against making a double fold your first build. I could be wrong, but I don't think anyone has built a successful double fold.
QUOTE (sensibull @ Oct 29 2007, 07:35 PM) 
I could be wrong, but I don't think anyone has built a successful double fold.
Oh... a challenge!
To bad I have neither the time nor the money for it.
QUOTE (sensibull @ Oct 29 2007, 06:35 PM)
Enclosure size is not only based on the size of the LCD used, and what other components (ballasts, fan power, etc.) you're trying to fit inside, but also the focal length of the projection triplet (which dictates distance between it and front fresnel).
I seriously doubt you will fit a single fold inside a 14" cube, and I strongly advise against making a double fold your first build. I could be wrong, but I don't think anyone has built a successful double fold.
I seriously doubt you will fit a single fold inside a 14" cube, and I strongly advise against making a double fold your first build. I could be wrong, but I don't think anyone has built a successful double fold.
Didn't you build a double fold? eeks?
Dang! Thanks for the replies guy, would be cool if there was a double fold that worked or was first time builder friendly. Right now my wire bookcase/tower are 2 14" cubes next to each other, i guess i'll just set it on top (less than 5' tall) and keep the width to 14" and length to 28", single fold design. Maybe in the future or by the time of a second PJ someone will have done a successful double fold. Thanks again, time for more drawing and researching.
Tyson
P.S. What are the problems with double folds? Why are they so insuccesful?
Tyson
P.S. What are the problems with double folds? Why are they so insuccesful?
QUOTE (arkcom @ Oct 29 2007, 07:46 PM)
Didn't you build a double fold? eeks?
No, I abandoned the double and went for a single.
QUOTE
P.S. What are the problems with double folds? Why are they so insuccesful?
Mainly the geometry and maintaining perfect alignment. It difficult to fold the light twice and still maintain proper focal distances for the bulb, fresnels, lcd, and lens. But perfect alignment would be the biggest challenge -- the mirrors have to be fairly exact in the angling, along with everything else.
Plus you have the light loss of each reflection (even the best front surface mirrors are only 94-96% reflective), etc. etc.
It just adds up to a lot of unnecessary complexity for a DIY build.
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