Asymmetric light diffusing material

Details Asymmetric light diffusing material Asymmetric light diffusing material

1997-10-22

2000-09-26

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Light polarizing article or holographic article

264 136, 264 138, 264 27, 2642884, 2642893, 2642902, B29D 1100

Patent

active

061238775

ABSTRACT:
Screens having unique optical properties are produced according to the invention by crosslinking and stretching, or otherwise deforming, a sheet of light-diffusing material having symmetrical light diffusion characteristics under conditions sufficient to induce asymmetry. Screens made from the asymmetric light diffusing materials described herein exhibit enhanced brightness and clarity. Utilizing the present methods, optical materials having a desired view angle or improved optical characteristics can be achieved.

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Week 9323, Derwent Publiciations Ltd., London, GB; AN 93-185565 and JP-A-5 113 606 (Sumitomo Chem. Co.) May 7, 1993, "Reflective Screen for reduced light scattering in vertical direction-comprises anisotropic light scattering material, e.g., polystyrene spherical uniform dispersion in polyethylene transparent matrix of differing refractive index," (ABSTRACT).
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