Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shinpei Arita0
Yukio Kokuzawa0
Katsuyuki Murai0
Date of Patent
May 6, 2008
0Patent Application Number
111034580
Date Filed
April 12, 2005
0Patent Primary Examiner
Patent abstract
A lens sheet for use as a Fresnel lens sheet or a lenticular lens sheet of rear projection screens, which includes a plastic substrate and a lens element disposed on the plastic substrate. The plastic substrate includes at least a first surface layer, an intermediate layer and a second surface layer. Each of the first surface layer and the second surface layer has a saturated water absorptivity higher than that of the intermediate layer.
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