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US 9,519,095 B2Granted
Optical waveguides
AssigneeCree, Inc.
InventorsKurt S. Wilcox, John W. Durkee, Craig D. Raleigh, Joseph P. Chobot
Life of this patent
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Abstract
An optical waveguide includes a coupling optic and a waveguide body. According to one embodiment, the body includes a first curved surface that extends between an input surface and an end surface and a second surface opposite the first surface. The input surface has a first thickness disposed between the first and second surfaces and the end surface has a second thickness disposed between the first and second surfaces less than the first thickness.
Claims39
An optical waveguide body, comprising:
- a first surface that extends between an input surface and an end surface;
- a second surface opposite the first surface wherein a body thickness is disposed between the first and second surfaces;
- wherein the body thickness at the input surface is greater than the body thickness at the end surface and the body thickness between the input surface and end surface decreases over a length of the body;
- and at least one stepped feature defined by first and second oblique angles on one of the first and second surface;
- wherein the first surface is curved along an entire first extent between the input surface and the end surface, and wherein the first surface is curved along an entire second extent between side surfaces wherein the first extent is orthogonal to the second extent.
2 more elements
An optical waveguide body, comprising:
- a first surface that extends between an input surface and an end surface;
- a second surface opposite the first surface;
- wherein the input surface comprises a first thickness disposed between the first and second surfaces;
- wherein the end surface comprises a second thickness disposed between the first and second surfaces less than the first thickness;
- wherein at least one of the first and second surfaces comprises first and second pluralities of spaced surfaces wherein each surface of the first plurality of spaced surfaces is disposed between and comprises ends coincident with ends of successive surfaces of the second plurality of spaced surfaces and the first and second pluralities of spaced surfaces define an overall body thickness that does not increase at any point from the input surface to the end surface;
- wherein the waveguide body develops a light distribution for general lighting;
- wherein at least one of the surfaces of the first and second pluralities of spaced surfaces is disposed at an oblique angle with respect to an adjacent other surface of the first and second pluralities of spaced surfaces;
- and
- wherein the first and the second pluralities of spaced surfaces are unequally spaced.
6 more elements
An optical waveguide body, comprising:
- a first surface extending in a length dimension between an input surface and an end surface and the first surface extending in a width dimension orthogonal to the length dimension;
- a second surface opposite the first surface;
- wherein the input surface comprises a first thickness disposed between the first and second surfaces;
- wherein the end surface comprises a second thickness disposed between the first and second surfaces less than the first thickness;
- and
- wherein at least one stepped feature is located on one of the first and second surfaces and a plurality of discrete optical features is disposed on the at least one stepped feature and the discrete optical features are disposed in a sequence extending along the width dimension.
3 more elements
Dependencies are inferred from the claim text.