I just stripped a HannsG HW191 monitor without any problems.

I expected the LC panel to look like one I saw for overhead projectors 10 years ago.
Unfortunately my panel has a diffuser on one side that I can't remove, it seems to be layered like this:

polarizer
glass
glass
diffuser
polarizer

I'm not entirely sure but the diffuser may be somehow integrated into one of the middle glass layers, it's very hard to see.

Is that normal? Did I just have bad luck by picking the wrong model?


tnx

Can you by any chance post a pic of it? And when you look through the panel, is it like looking through tinted glass? How clear is it?

This is how diffuse it is:
ftp://ftp.cgv.tugraz.at:2222/public/peopl...le/DSC_0008.JPG
ftp://ftp.cgv.tugraz.at:2222/public/peopl...le/DSC_0014.JPG

These two images show a corner. The diffuser seems to be that white layer with round corners. It looks like it was a very thin layer on top of the glass but I can't feel it when sliding over the edge with the fingernail.
ftp://ftp.cgv.tugraz.at:2222/public/peopl...le/DSC_0010.JPG
ftp://ftp.cgv.tugraz.at:2222/public/peopl...le/DSC_0029.JPG

Thanks for any comments

Well, there definitely is a diffuser.

If you look really closely at the third pic in your last post, you can see that the white tinted area doesn't extend into the viewing area. I think it is the glue that seals the liquid crystal between the glass panels.

I would assume that the antiglare is attached to the front polarizer, just like with most other LCDs we use.

edit: If you look at the LCD from an angle, is one side shiny and one side dull looking?

You are right, I had not seen that before.



Yes the back side is reflecting mirror like, the other side reflects in a diffuse way.

This means the anti glare won't have an effect on the projector design? I haven't got any fresnel lens yet.

In fact I wanted to try something slightly different, the original idea was to use a normal projector plus the LC panel (out of focus) in front of it, to produce much higher contrast images. In other words I wanted to improve the black level by showing sort of a low frequency, blurry version of the image on the LC panel and projecting a modified image with a normal projector through the panel on the wall.

It seems like I now need a lens just before and just after the panel? I'm still a bit confused with all the lens.
I assume both lens should have about 1m focal length since that is approx. the distance between projector and panel when the projector image fills the panel.

With the old sort of LC panel without anti glare I had in mind I thought that may have worked more or less.

Thanks for sharing your ideas.