Will these 2 marry each other well?

Thanks,

Neil

EDIT:

I modified the subject after finding out that torus is the complex curving of screen.

It's a marriage made in heaven :D

It's a marriage made in heaven :D

I really appreciate your reply. I'll order the Wilsonart DW next week and then follow the technique that I saw at DIY Constant Height who just finished his curved frame.

Today, I'm going to start preparing the mounts. I bought 10' struts, spring nuts, square/round/lock washers, hex nuts, 10' rods and 4" lag screws. They're all 3/8" in size. It only cost me $57 including tax. I will take tons of pictures as well.

I will keep you posted!

Thanks again!

If I understand the curved screen logic, the curve reflects more light back to the viewer giving them a brighter screen? But I also thought the curved screen was to offset the distortion of the anamorphic lenses for 2.35 setup on digital. If that is the case and the curved screen corrects the distortion, won't it create distortion with a straight CRT PJ? And if that is not correct, and the screen does produce a "brighter" picture, would there be any potential reason not to do a curved screen?

Lance

If I understand the curved screen logic, the curve reflects more light back to the viewer giving them a brighter screen? But I also thought the curved screen was to offset the distortion of the anamorphic lenses for 2.35 setup on digital. If that is the case and the curved screen corrects the distortion, won't it create distortion with a straight CRT PJ? And if that is not correct, and the screen does produce a "brighter" picture, would there be any potential reason not to do a curved screen?

Lance

I'm also interesed on the responses from our experts here. Very good question!

A curved screen will help to lessen the distortion you get when you use a digital projector and an anamorphic lens. I think that it would create distortion with a CRT projector but with all the geometry controls a CRT gives you I think it would be a non-issue. I think that the biggest problem you would run into would be loss of focus unless you were using lenses designed for curved screens. However some lenses like the HD-117? found on the Barco cine 8 onxy do better with a slight curve

Erik

A curved screen will help to lessen the distortion you get when you use a digital projector and an anamorphic lens. I think that it would create distortion with a CRT projector but with all the geometry controls a CRT gives you I think it would be a non-issue. I think that the biggest problem you would run into would be loss of focus unless you were using lenses designed for curved screens. However some lenses like the HD-117? found on the Barco cine 8 onxy do better with a slight curve

Erik

Thank you so much. I wouldn't waste my time anymore on the curve screen then. I'm already happy with the simple flat screen. I'll just stay with it.

Thank you so much again! :)

A curved screen can help to increase brightness by focusing the light onto your viewing position. But this requires a high-gain screen surface. If the gain is too low, the light is dispersed evenly rather than being reflected in a particular direction. I doubt curving Wilsonart (Designer White has 1.24 gain) would accomplish much.

Hi,

a gain of about 1.3 should be good for slightly curved screens and it looks very cool :)

Focussing is still pretty good if the curvature is not above 5% of the screen width, there has to be some additional range though in bow adjustment if the projector is projecting at an angle.

Oliver

A curved screen will help to lessen the distortion you get when you use a digital projector and an anamorphic lens. I think that it would create distortion with a CRT projector but with all the geometry controls a CRT gives you I think it would be a non-issue. I think that the biggest problem you would run into would be loss of focus unless you were using lenses designed for curved screens. However some lenses like the HD-117? found on the Barco cine 8 onxy do better with a slight curve

Erik

This is incorrect, as a CRT lens has the ability to focus the edges independently of the center. For this reason, a group of CRT owners have made Torus screens and love them. A good source of info is Iceman's Torus thread in the archives.

I agree with Oliver on curving the screen. I have only seen one DW screen (with a G90) and it had an issue with hotspotting. I am not sure if all of the DW screens are this bad, but from my measurements the gloss was kind of high. If it was me, then I would put two strips under the edges and curve it a couple of inches horizontally.

This is incorrect, as a CRT lens has the ability to focus the edges independently of the center. For this reason, a group of CRT owners have made Torus screens and love them. A good source of info is Iceman's Torus thread in the archives.

I agree with Oliver on curving the screen. I have only seen one DW screen (with a G90) and it had an issue with hotspotting. I am not sure if all of the DW screens are this bad, but from my measurements the gloss was kind of high. If it was me, then I would put two strips under the edges and curve it a couple of inches horizontally.

Hi Eric, what if I am only doing simple curve(not torus), won't I encounter focusing problems?

So guys, am I correct that using curved screen, we can use pin button to adjust or match the shape of the curved screen?

Hi,

you will need to use bow, zone and pin to adapt to the curved screen.
You will be safe with a curvature of about 5% screen width.

With such a flat curvature do only go with a horizontal curve, looks better anyway :)

Oliver

BAM! Thanks Oliver. :)

BAM! Thanks Oliver. :)

Let us know how it goes :)