Shaped microstructure-based optical diffusers for creating batwing and other lighting patterns
First Claim
1. A light distribution device for use with a light assembly including a linear light source having a light source longitudinal axis, the light distribution device comprising:
- a light transmissive substrate having first and second opposing faces; and
a plurality of substantially parallel linear prisms on the second face that extend in a longitudinal direction of the substrate, a respective prism having a generally triangular cross section in a plane transverse to the longitudinal direction of the substrate;
wherein the light distribution device is configured to connect to the light assembly in a connected position with the first face of the substrate facing the light source, with the linear prisms substantially parallel to the light source longitudinal axis and with and the substrate having a non-planar cross-sectional shape in a plane transverse to the longitudinal direction of the substrate such that at least a major portion of the substrate is concave relative to the light source;
wherein, when connected in the connected position, the light distribution device is configured to receive light from the light source and distribute the light emerging from the second face of the substrate in a batwing distribution pattern in a plane perpendicular to the light source longitudinal axis.
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Accused Products
Abstract
A light distribution device includes a light transmissive substrate having first and second opposing faces and a plurality of substantially parallel linear prisms on the second face that extend in a longitudinal direction of the substrate. The light distribution device is configured to connect to a light assembly including a linear light source with the first face of the substrate facing the light source, with the linear prisms substantially parallel to a light source longitudinal axis and with and the substrate having a non-planar cross-sectional shape such that at least a major portion of the substrate is concave relative to the light source. When connected, the light distribution device is configured to receive light from the light source and distribute the light emerging from the second face of the substrate in a batwing distribution pattern in a plane perpendicular to the light source longitudinal axis.
97 Citations
38 Claims
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1. A light distribution device for use with a light assembly including a linear light source having a light source longitudinal axis, the light distribution device comprising:
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a light transmissive substrate having first and second opposing faces; and a plurality of substantially parallel linear prisms on the second face that extend in a longitudinal direction of the substrate, a respective prism having a generally triangular cross section in a plane transverse to the longitudinal direction of the substrate; wherein the light distribution device is configured to connect to the light assembly in a connected position with the first face of the substrate facing the light source, with the linear prisms substantially parallel to the light source longitudinal axis and with and the substrate having a non-planar cross-sectional shape in a plane transverse to the longitudinal direction of the substrate such that at least a major portion of the substrate is concave relative to the light source; wherein, when connected in the connected position, the light distribution device is configured to receive light from the light source and distribute the light emerging from the second face of the substrate in a batwing distribution pattern in a plane perpendicular to the light source longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A light distribution device for use with first and second light assemblies, the first light assembly including a first linear light source having a first light source longitudinal axis, the second light assembly including a second linear light source having a second light source longitudinal axis, the light distribution device comprising:
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a first light transmissive substrate having first and second opposing faces with a plurality of substantially parallel linear prisms on the second face that extend in a longitudinal direction of the first substrate; a second light transmissive substrate having first and second opposing faces with a plurality of substantially parallel linear prisms on the second face that extend in a longitudinal direction of the second substrate, wherein the first light transmissive substrate is configured to connect to the first light assembly in a connected position with the first face of the first substrate facing the first light source, with the linear prisms substantially parallel to the first light source longitudinal axis and with the first substrate concave relative to the first light source; wherein the second light transmissive substrate is configured to connect to the second light assembly in a connected position with the first face of the second substrate facing the second light source, with the linear prisms substantially parallel to the second light source longitudinal axis and with the second substrate concave relative to the second light source; wherein, when connected in the connected position, the first light transmissive substrate is configured to receive light from the first light source and distribute the light emerging from the second face of the first substrate in a first one-sided distribution pattern in a plane perpendicular to the first light source longitudinal axis; wherein, when connected in the connected position, the second light transmissive substrate is configured to receive light from the second light source and distribute the light emerging from the second face of the second substrate in a second one-sided distribution pattern in a plane perpendicular to the second light source longitudinal axis; and wherein the first and second one-sided distributions patterns combine to form a batwing distribution pattern in a plane perpendicular to the first and second light source longitudinal axes. - View Dependent Claims (36, 37, 38)
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Specification