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US 10,379,283 B2Granted
Lighting device having diffuser with array of 3D elements
AssigneeLG Innotek Co., Ltd.
InventorsJae Hyuk Jang, Jin Su Kim, Seung Jong Baek, Dong Hyun Lee
Life of this patent
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Abstract
A light device includes a transparent substrate having a first surface and a second opposite surface, an array of light-modifying elements formed on the substrate, and a light source to project light along a thickness direction of the substrate. The light-modifying elements having surfaces inclined at an angle with respect to at least one of the first surface and the second surface, and configured to diffuse light by reflecting and/or refracting incident light.
Claims23
A lighting device, comprising:
- a transparent substrate having a first surface and an opposite second surface;
- an array of three-dimensional elements disposed on the transparent substrate, wherein the array includes at least a first set of the three-dimensional elements, a second set of the three-dimensional elements, and a third set of the three-dimensional elements;
- and
- a light source projecting light into the transparent substrate along a thickness direction of the transparent substrate,
- wherein each of the three-dimensional elements includes surfaces inclined at an angle with respect to at least one of the first surface or the second surface, wherein a light from the light source incident on the transparent substrate is at least one of refracted and reflected towards and projected out of the first surface or the second surface,
- wherein the first set, the second set and the third set of the three-dimensional elements are arranged in a first direction and each set of the three-dimensional elements extends in a second direction which intersects to the first direction,
- wherein each of the first set, the second set and the third set of the three-dimensional elements separately a plurality of the three-dimensional elements,
- wherein for each set of the plurality of three-dimensional elements, each separate one of the plurality of three-dimensional elements are arranged in the second direction,
- wherein a first spaced part extends in the second direction between the plurality of three-dimensional elements of the first set of the three-dimensional elements and the plurality of three-dimensional elements of the second set of the three-dimensional elements.
6 more elements
A lighting device, comprising:
- a transparent substrate having a first surface and a second surface opposite to the first surface;
- a plurality of three-dimensional elements on the transparent substrate wherein the plurality of three-dimensional elements includes a first set of the three-dimensional elements, a second set of the three-dimensional elements, and a third set of the three-dimensional elements;
- and
- a light source irradiating a beam from a direction inclined with respect to the first surface or the second surface to the transparent substrate,
- wherein each of the three-dimensional elements includes surfaces inclined at an angle with respect to at least one of the first surface or the second surface, wherein light from the light source incident on the transparent substrate is at least one of refracted and reflected towards and projected out of the first surface or the second surface,
- wherein the first set, the second set and the third set of the three-dimensional elements are arranged in a first direction and each set of the three-dimensional elements extends in a second direction which intersects to the first direction,
- wherein each of the first set, the second set and the third set of the three-dimensional elements separately includes a plurality of the three-dimensional elements,
- wherein for each set of the plurality of three-dimensional elements, each separate one of the plurality of three-dimensional elements are arranged in the second direction,
- wherein a spaced part extends in the second direction between the plurality of three-dimensional elements of the first set of the three-dimensional elements and the plurality of three-dimensional elements of the second set of the three-dimensional elements.
6 more elements
Dependencies are inferred from the claim text.