Hi! Im a longtime lurker and I rarely post. Just wanna share my completed WUXGA I completed months ago which is based on LG-Phillips LP154WU1. I also completed a 7" diy projector, will post it soon.

removing the 1st reflective layer:

removing the 2nd reflective layer. soaked in distilled water using a towel for about 3 hours

after about 3hrs, the 2nd reflective layer was completely removed



rubbed my finger to remove the sticky residue



i didnt attempt to remove the AG. too risky for me.

the box







the box is ugly. im too lazy to finish it

the screens:

wallpapers







movies

materials used:

220/330 fresnel lens
345mm projection lens
250w 8000k MH bulb

thanks for looking!

Nice WORK

Looks like it turned out good.Nice work!

I thintk I have the same lcd . I am using a pro reflector and condensor lens with 400 watt t-15. And my picture is really dark. I wonder where you got the lcd.

my reflector and condenser lens is very very close to the bulb. make sure the position of your bulb is 220m away from the fresnel.

more pics:

Where did you get your bulb. I thought that 8000 color temp would be blue in color. Your results are anything but.

its very hard to find. i got the bulb here in the philippines.

hi
when you removed the antiglare films, did you remove the polarizing film as well?

i didnt removed the antiglare, i only removed the reflective layer (2 pcs) at the back of the lcd. i didnt replace the polarizer altough i want to.

Is the ag layer on the front of the lcd?

^yes. antiglare on the front and reflective layer at the back. correct me if im wrong.

Your correct. Unless, the panel is a 'glossy monitor' with no antiglare at all.

BTW Vinch, nice projections. Congrats!

^thanks!

thanks Vinch
I stripped my 15'' lcd pannel(NEC), then removed antigare film. But I didn't know it function as polariser as well. Now no image displays, unless I look throgh the wrinkled peeled off film. I think I need to buy another panel now
anyway good work...congrats

try a replacement polarizer first before getting a new panel - If you only removed the one, then it shouldn't be too hard to fix. You could even place it before the triplet, so long as it is in the correct orientation. Anyway, there's a ton of threads on replacing the polarizer. Give it a shot before replacing, could be worth your while

I was having darness issue and then I removed the 2 reflective layers. Under neath that I found what looks like an ag layer. On the other side it looks like a polarizer. You know shiny and slightly wavy. I want to improve brightness. I want to make sure bedfore I chemically strip it. It is dull while the other side is shiny.

Thanks giorgaki
But my polar film got teared off many locations when I tried to peel it off. No I have only option to go for another LCD Panel

Check polarization.com for linear polar by the foot. The LINEAR non adhesive type and not the circular type. Might cost you less then getting a whole panel alltogether. I believe 3dlens.com also sells polar as well.


Some have claimed issues when placing it up against the triplet as far as loosing blacks, some have claimed it's best up against the full width of the LCD. I'm in tuned with those claiming at the LCD. In any case it can be done as long as you do find that right orientation otherwise you colors are all screwed. Search and check for elken2000's threads for his experiments.


Not your only option, there is still a chance to recover by replacing a loose polar sheet from one of the stores I mentioned.

Antiglare (ag) is dull and not shiny. If you place a lamp, flashlight over the panel and the reflection is not a clear image of the light than thats ag. Non-ag polar easily reflects the image like a dark mirror.

Polarizing sheets come in 2 flavors - 'non glossy' which is a antiglared film on top of polarizer and 'glossy' which is just clear layer on top of the polarizer.

BTW, why not just polish the ag with Mother's Mag Polish and save yourself the risk of damaging the polar and/or panel alltogether?

Yes ,but wouldn't it be brighter if the ag was gone all together.

Theoretically it should be anywhere from 5%-10% brighter, but that is heavily debated here.

Exposed polar has a high tendency to 'grain'. The structure of polar are strands oriented one way (Linearly) which are then sandwiched between two films. One film is clear the other processed antiglared or just clear as I mentioned earlier of gloss polar films. These films protect the polar strands from loosing its film like structure otherwise 'graining' occurs like aged wood after time especially to heat and cold. This graining appears like diagonal lines on projection which is actually your lamp punching through the LCD and then through the cracks of the grain. Here is pic of what I mean, you may have to expand it to see it better.

Click to view attachment

Polishing antiglare does offer some brightness and is very safe compared to removing ag alltogether and the risks to graining but it does take alot of effort and several applications. Link to pics.

EDIT: There was a comparison pic of projection before and after polishing by a member that did show the percentage of brightness but I couldn't find it

@simul8r

nice screen shot there! corners are still bright. may i know what type of projection lens you are using?

mine have brownish colors at the corners and im using a 345mm projection lens, do you think upgrading to a bigger lens will solve the issue?

Your rear fresnel is probably too far from your lamp arch, try moving your lamp a little closer. If the lamp is too far, you'll have orange/brown corners. If the lamp is too close you'll have blue/gray corners. The "sweet spot" is in between these extremes. You'll still have some dimness at the corners but only slightly discolored if you have the "sweet spot" aquired.

10.6" WXGA Samsung with a 457mm (18" Beseller), 575w HMI lamp combined with a double precondenser set up. Check my 4th build. And as Sinner mentioned, you might be to far from your rear fresnel. With a precon lens you should be even closer than 220mm unless the diameter of the lens is to small to cover your 15.4" WUXGA.

I removed what was thought to be the ag under the two reflective layers. It was the polar and alot of glue. I replaced it with high contrast polar that I had on hand from polarization.com. There in Texas and really easy to work with. I have to say the picture is brighter however a little green looking because the under side of my lid hasn't been painted flat black yet.

@sinner, simul8r

thanks for the tip

@c feole

is it easy to replace the polar film?