Optical substrate and method of making
First Claim
1. An optical substrate comprising:
- a surface having a plurality of prism structures, wherein the lateral position of at least one of the prism structures is randomly or pseudo-randomly varied along its length.
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Accused Products
Abstract
An optical surface substrate. The optical substrate features a three-dimensional surface. The optical substrate is defined by a first surface structure function modulated by a second surface structure function, the first surface structure function producing at least one specular component from a first input beam of light. The second surface structure function has a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate produces specular and diffuse light from the first input beam of light. The optical substrate is suitable for use in a variety of applications, including brightness enhancement and projection devices.
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Citations
25 Claims
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1. An optical substrate comprising:
a surface having a plurality of prism structures, wherein the lateral position of at least one of the prism structures is randomly or pseudo-randomly varied along its length. - View Dependent Claims (2, 4, 5, 7, 8, 10, 11, 13, 14, 25)
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3. An optical substrate, comprising:
a surface having plurality of prism structures, the surface characterized by a correlation length of about 1 cm or less in a lateral direction. - View Dependent Claims (6, 9, 12, 15)
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16. A display device comprising:
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an optical source for generating light; and
an optical substrate comprising a surface having a plurality of prism structures, wherein the lateral position of at least one of the prism structures is varied along its length. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification