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Lumenlab > Audio Video Sciences > Projector Builder > DIY Video Projector Design
esoteric
So, I keep reading about references to people removing anti-glare, but nothing that states why one would want to do this, or what panels are "affected".

So, how would the anti-glare affect the projected image? Reduce brightness, contrast?

Also, I'm planning on getting the Sharp WUXGA 02 or 12, do these panels have the anti-glare? It doesn't sound like it's worth removing... (just reading about someones scratches and tears... and tears...)

Thx y'all.
tameone
QUOTE (esoteric @ Oct 21 2006, 12:50 AM) *
So, I keep reading about references to people removing anti-glare, but nothing that states why one would want to do this, or what panels are "affected".

So, how would the anti-glare affect the projected image? Reduce brightness, contrast?

Also, I'm planning on getting the Sharp WUXGA 02 or 12, do these panels have the anti-glare? It doesn't sound like it's worth removing... (just reading about someones scratches and tears... and tears...)

Thx y'all.



anti glare is a diffuser. light hits the panel and instead of reflecting or glaring back at your eye, it is diffused and scattered. This is the opposite of what we want with our LCDs. we want light to pass directly through the panel unhindered. removing anti glare will give only a nominal increase in brightness, but generally a noticeable gain in sharpness. 98% of panels have anti-glare. Any panel that looks dull has anti glare.
GadgetSmith
The degree of brightness increase is largly dependent on what you plan to use for a lamp, fresnels, and triplet. The a/g layer effects brightness by interfering with the light path, spreading it out, and making it miss the triplet. Light missing the triplet does not get to the screen. A lot of light can miss the triplet if the arc image size is large compared to the triplet diameter. I have yet to determine a loss % for a small arc size, but will do this soon.

The Sharp WUXGA panels W02 & W12 have a/g, and it is a real PITA to remove... there is a thread dedicated to this topic. Located Here. There is a reason it's in the "extreme mods" section as you can ruin your panel removing a/g.

cheers,
gs
esoteric
Ah, yeah, diffusion and a decrease in sharpness. That would make sense.

Yeah, I've been looking at that thread. After dropping hundreds on a panel, I'm going to be scared enough just stripping it for the sled!

Thanks guys.
SIMUL8R
QUOTE (esoteric @ Oct 21 2006, 01:29 PM) *
Ah, yeah, diffusion and a decrease in sharpness. That would make sense.

Yeah, I've been looking at that thread. After dropping hundreds on a panel, I'm going to be scared enough just stripping it for the sled!

Thanks guys.

Try the packaging tape method. Place a piece of clear packaging tape on the antiglare side as you would when tinting a automobile window...windex or slightly soapy water and squeegee out the bubbles, then compare. Not the exact realism of antiglare removed but similar. For those not keen on total antiglare removal there is the polishing technique with Mother's Mag Polish or Peak Polish, again not the same as total removal but does provide some improvement.
silver_surfer
I just did it on my LL premade pj :



see the difference for yourself :



and I get 20% more brightness biggrin.gif
jorhyne
Just curious,
Is it likely that an old sharp panel (640x480) would have antiglare? It is taken from an old projection panel, probably ten years old.
Housemachine
QUOTE (jorhyne @ Oct 23 2006, 05:37 AM) *
Just curious,
Is it likely that an old sharp panel (640x480) would have antiglare? It is taken from an old projection panel, probably ten years old.


Imo it has not... Because it has taken from a projection panel. Can you see heavy reflection on the screen ? If you can, then you could sure that it has no AG layer. wink.gif
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