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Lightseraph

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Posted on Thursday, September 29, 2005 - 7:48 pm:   Edit PostDelete PostView Post/Check IPPrint Post

we got a projector cylindrical correction problem.
we ues Sanyo xf35 projector to project onto the cylindrical screen, the projector has no cylindrical correction, that result in curved bottom.
what method can solve the problem?
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PeterZ

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Posted on Saturday, November 26, 2005 - 1:30 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Possible is mounting of cylindrical glass (glass for astigmatic eyglasses, from eyglasses shop) in front of projector.
The orientation of axis of this glass is crucial!
The refraction (in cylindrical diopters)of this glass must by experimentally measured (probing of glasses with diferent refractions, +,- cylinder).
I ophthalmologist, my hobby is 3D.
P.Žiak Slovakia
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salterre

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Posted on Sunday, November 27, 2005 - 7:14 am:   Edit PostDelete PostView Post/Check IPPrint Post

get an NEC projector:
http://www.nec-pj.com/products/others/distorted.html
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itsikw

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Posted on Monday, November 28, 2005 - 11:34 am:   Edit PostDelete PostView Post/Check IPPrint Post

One way to overcome this is to digitally warp the content with a negative distortion. When you project the warped content, The two distortions (screen and warping) add up and cancel each other.

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