For people looking for PVC, it's better known as Vinyl. it's 80%+/- PVC 20%+/- Polyester. $8/yard i didn't find any, but since i was on my way, i decided to...
which lens will give a better image using a 15 inch flatscreen? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail...
Foam Board on the bottom. Foam Board is better for my angle of viewing. anyone know what screen material will be good for me? especially watching at an angle....
Dose anyone know of any shops in Canada that carry the PCX or P.M. lenses with the req properties for diy crt?(100+mm @300-500mmFL),so far all ive come across...
Foam board should give you a slightly higher gain than blackout cloth, since the FB has a slight sheen.. To have a wide viewing cone you will have to use a...
Sandra, Have you curved the screen ? The Mirror Acrylic screen MUST be curved, otherwise you will have hot- spotting. For your size screen, it will only need...
thanks prof, the only problem i have now is having to build a curved screen to matched to matched the curved edges of the image... how to make the projection...
Hi Prof, Yes, I do curve it. I have 4 2x4" wrapped in paper towel, padded on each end and duct taped around the middle of the wood. It works excellently, so I...
See directions for UHG screen in 'Files' and modify for your own idea, on the left side of this screen. You seem to be trying to avoid having your screen on a...
Hi, You might want to read the post RE: Matte Lacquer for an easy solution but I'm sure your flexiboard is heavier than my 5x49" mirror acrylic panel. You'll...
hi sandra, please check out my design in the files section i just added them today. by the way the weigth of the board would not be a problem coz its a...
Someone told me that his triplet burns a hole on the ground (like a magnifying glass) at 6 3/4" and 10 3/4" the other end. what focal length does that add up...
sledge....You might want to modify your sketch in the files section...\ You can't show a 4" curve, without showing the size of the screen. If it was a 100"...
"I can buff it up and even better yet, add some pledge to the surface. Yes, pledge" Are you talking about the furniture polish "Pledge"? What effect does that...
ok im sorry, mine worked at 4 inches maybe because its less than 100 inch, ok, as soon as a got home ill edit that diagram another groupmate said it should be...
Hi. Which of these should I buy? 1. http://www.anchoroptics.com/catalog/product.cfm?id=16&start=476# Item: PCX lens AX20556 121mm dia 400mm fl $13.00 2....
To make a Doublet lens with a 350mm FL., you would need two PCX lenses with a FL.of 600mm.each, spaced 6" apart...and at least 100mm.diam... Then you would...
... the ... Page ... blurred ... doing ... me. ... The MNS.lens would be my choice of the two....BUT I doubt that it's available since that list of lenses has...
Having been frustrated by my inability to focus my fresnel, I tried looking thru some junk we have here (we used to have a photofinishing laboratory). I found...
The PMN is the better of the two from our experience. I have a very nice large PMN lens I could sell someone if they want it. It is the Apogee lens. I can't...
Prof, I have 4 of the large projection TV lenses (I think Delta III and Delta IV). The front element is a PCX. Couldn't we take the front elements out of two...
It could be the 131mm.diam 508mm.FL...That's the only one they have listed on their website. ... very ... the ... <no_reply@y...> ... Magna- ... after...
Clay, If you can give me the focal lengths of the PCX lenses, I can calculate the spacing and what the EFL will be for a doublet.. The doublet also needs to...
Thanks for the replies! Before I buy a new lens could you guys answer this question I have: -Does more light (larger diameter lens) guarantee more saturated...
"-Does more light (larger diameter lens) guarantee more saturated colors" It doesn't guarantee better colour saturation, but the larger diam.lens should help...
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