The Extraneous Light Blocker (ELB) I recently decided to try and improve the edge focus problem of the projected image.. This is an inherent problem with the...
Prof, Sounds like a very promising improvement to DIY CRT Projection, it's something I will be able to try reasonably quickly and will do so in the next few...
What happens if you use a 7" circle instead of a 7" square? Did you look at Remys light blocking baffle? Possibly adding his design between the TV and your...
It may still work ok with a circular cut out, but I was happy with the results from the square cut out, so I didn't try a circle and it was easier cutting a...
croma clear, If anyone expresses their uncertainty about how the ELB works or needs further clarification, then I'll post a drawing of it, but I think you will...
BTW...I forgot to mention that I'm currently working on a cheaper version of the UHG screen...Maintainng the same gain for a lot less cost... ... section..copy...
... internal reflection are not eliminated by lining the whole interior with felt. They are just reduced more than black flat paint. The only thing that can...
Prof, Yeah you are right it is very straightforward to build without a drawing, in fact I built one last night and tried it already..! My impressions, contrast...
Remy, ______________________________________________________________________ The trick is to build the housing or the box larger than your screen ... ...
croma clear, Thanks....Good to hear that you have some improvements using the ELB. Initial tests of the new screen materials dramatically accentuated the...
Prof, You have to excuse me, I went wrong with the dimensions. I wanted to say 25mm and NOT 250mm. 2.5 cm it is. I am sorry about that I just added the zero. I...
Remy, That certainly sounds like a better size box.. If there is any residual light that's not absorbed by the felt, then I agree that the baffles will...
Prof, I see what you mean, indeed the ELB will act as an aperture boaord but from the inside. Doesn't it reduce brightness once applied? How far back from the...
Hi Remy, From my experiment with Prof's ELB I could not say it makes the picture darker (it's not noticably darker)...I think the only way to know is to...
Prof, Yes the ELB is staying in ! The new screen sounds more than interesting as long as it does not end up causing burn in on the projector screen :)! ...
Syed, This site does not allow attachments from your e-mails to help protect us all from viruses, etc. Please post your pictures in a new folder with your name...
That looks Sweet! Let us know the results :) ... That looks Sweet! Let us know the results :) On 2/13/06, claygraner < claygraner@... > wrote: Syed, This...
This is sort of what Syed made but his was not tapered. http://www.gortite.com/camera_bellows.htm Gortite Tapered Camera Bellows are designed for applications...
http://www.cyberbeach.net/~dbardell/bellows.html I would think if you use a tapered bellows you would accomplish the same thing as Remy and Prof have done...
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Remy, The ELB will only reduce brightness if it's placed too far back from the lens. The light beam will then start to be clipped around the edges. I found the...
croma clear, Unfortunately, the new screen will be just as difficult to build as the current UHG Mk.2 screen...if not more so. It still has to be curved and...
If you use a tapered bellows, tapering down to the lens, you will reduce the light output, similar to a trapezoid box. The bellows shape would certainly be a...
Prof, I use these frosted plastic nylon films (you know the ones you use to cover protect your books). they're very thin and cheap. Once you stretch it, gives...
Prof, Thats OK dont mind me, let me encourage you to continue. If it turns out to the brightest, I would make the effort to build it absolutely. Cheers...
yes, bellows are great.. now ...and i made a comple system... Syed ... Jiyo cricket on Yahoo! India cricket Yahoo! Messenger Mobile Stay in touch with your...
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