Microstructure-based diffusers for creating batwing lighting patterns
First Claim
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1. A light transmissive structure comprising:
- a light transmissive substrate having first and second opposing faces; and
an array of microprism elements on the first face, a respective microprism element comprising at least one ring comprising a plurality of microstructure pyramids that is rotated randomly and/or pseudorandomly on the first face about an axis that is orthogonal to the substrate relative to at least one other microprism element;
wherein the light transmissive structure is configured to receive light from a light source facing the first face and distribute the light emerging from the second face in a 2D batwing distribution.
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Abstract
A light transmissive structure includes a light transmissive substrate having first and second opposing faces and array of microprism elements on the first face. A respective microprism element includes at least one ring comprising a plurality of microstructure pyramids that is rotated randomly and/or pseudorandomly on the first face about an axis that is orthogonal to the substrate relative to at least one other microprism element. The light transmissive structure is configured to receive light from a light source facing the first face and distribute the light emerging from the second face in a 2D batwing distribution.
121 Citations
19 Claims
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1. A light transmissive structure comprising:
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a light transmissive substrate having first and second opposing faces; and an array of microprism elements on the first face, a respective microprism element comprising at least one ring comprising a plurality of microstructure pyramids that is rotated randomly and/or pseudorandomly on the first face about an axis that is orthogonal to the substrate relative to at least one other microprism element; wherein the light transmissive structure is configured to receive light from a light source facing the first face and distribute the light emerging from the second face in a 2D batwing distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A light transmissive structure comprising:
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a light transmissive substrate having first and second opposing faces; and a plurality of pyramid microprisms on the first face, wherein the microprisms are distributed on the first face of the substrate with a plurality of different pyramid face orientation angles measured from an edge of the substrate; wherein the light transmissive structure is configured to receive light from a light source facing the first face and distribute the light emerging from the second face in a 2D batwing distribution; wherein a respective pyramid microprism is rotated randomly and/or pseudorandomly on the first face relative to at least one other pyramid microprism. - View Dependent Claims (17)
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18. A light transmissive structure comprising:
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a light transmissive substrate having first and second opposing faces; and an array of microprism elements on the first face, a respective microprism element comprising a plurality of concentric microprism patterns, a respective microprism pattern comprising a plurality of triangular pyramids arranged in an elliptical configuration; wherein the light transmissive structure is configured to receive light from a light source facing the first face and distribute the light emerging from the second face in a 2D batwing distribution; wherein a respective microprism element comprises a microprism pattern that is rotated randomly and/or pseudorandomly on the first face relative to at least one other microprism element. - View Dependent Claims (19)
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Specification