Light Guide and Apparatus For Using Light Guide
First Claim
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1. A light guide comprising:
- a light conducting substrate comprising,a) a front surface;
b) a back surface; and
c) at least a first edge and a second edge that oppose each other;
wherein the back surface has disposed thereon light scattering elements;
wherein the light scattering elements are at least two different sizes arranged in a pattern possessing at least a first axis of symmetry;
wherein at least the first edge and second edge receives light from at least a first and second light source; and
wherein the light sources are at least substantially parallel to the axis of symmetry.
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Abstract
A light guide and associated display having high uniformity of luminance over the entire light guide and display front side are disclosed.
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Citations
18 Claims
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1. A light guide comprising:
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a light conducting substrate comprising, a) a front surface; b) a back surface; and c) at least a first edge and a second edge that oppose each other; wherein the back surface has disposed thereon light scattering elements; wherein the light scattering elements are at least two different sizes arranged in a pattern possessing at least a first axis of symmetry; wherein at least the first edge and second edge receives light from at least a first and second light source; and
wherein the light sources are at least substantially parallel to the axis of symmetry.- View Dependent Claims (2, 3, 4, 7, 8, 9, 10, 12, 14, 15, 16, 17)
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5. A light guide comprising:
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a circular light conducting substrate comprising, a) a front surface; b) a back surface; and c) a side surface; wherein the back surface has disposed thereon light scattering elements; wherein the light scattering elements are at least two different sizes arranged in a pattern possessing at least a first axis of symmetry; wherein the side surface receives light from a light source. - View Dependent Claims (6, 11, 13)
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18. A light guide comprising:
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a light conducting substrate comprising, a) a front surface; b) a back surface; and c) at least a first edge and a second edge that oppose each other; wherein the back surface has disposed thereon light scattering elements; wherein the light scattering elements are at least two different sizes arranged in a pattern possessing at least a first axis of symmetry; wherein at least one of the first and second edges receives light from at least one light source; and wherein the at least one light source is at least substantially parallel to the axis of symmetry.
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Specification