Light diffuser with colored variable diffusion
AssigneeEastman Kodak Company
InventorsCheryl J. Kaminsky, Robert P. Bourdelais, John M. Pochan
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Abstract
The invention provides a light diffuser comprising a macro diffusion efficiency variation wherein at least part of the diffuser is colored. The invention also provides light diffuser comprising a macro diffusion efficiency variation wherein at least part of the diffuser is colored for rear projection displays, back-lighted imaging media, and a liquid crystal display component and device. The invention further provides a process for preparing such a diffuser.
Claims38
A light diffuser polymeric film comprising a macro diffusion efficiency variation of greater than 5% over an in plane distance of at least 2 cm using an integrating sphere with a light entry port of 25.4 mm diameter, the diffuser having a total light transmission of at least 80% and wherein at least part of the diffuser is selectively colored.
Dependencies are inferred from the claim text.