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US 10,648,644 B2Granted
Optics for chip-on-board lighting having a protrusion
AssigneeBridgelux, Inc.
InventorXiaolu Chen
Life of this patent
Estimating the term…
Abstract
A cover for a light source for use in a lamp or luminaire. An outer surface of the cover, opposite the light source, comprises a rounded shape and includes a protrusion extending from the cover. The protrusion extends substantially in a light emission direction and is shaped the protrusion to direct light emitted from the light source in a desired direction.
Claims23
A lamp, comprising:
- a light source configured to emit light;
- a cover having an outer surface opposite the light source, a protrusion extending from the cover and shaped to direct light emitted from the light source, and
- an indented portion in the cover and configured to emit a portion of the light,
- wherein the indented portion is configured to reduce light intensity in a beam center of the light emitted by the light source,
- wherein the protrusion extends from and is coplanar with a side of the outer surface of the cover,
- wherein the protrusion has a first protrusion surface that is a continuous smooth flat surface that extends parallel to and extends only an entire width of the indented portion to focus light emitted from the indented portion of the cover, and
- wherein the protrusion extends perpendicular to a face of the outer surface of the cover that extends substantially orthogonally to the side of the outer surface of the cover.
4 more elements
An optical element for covering a light source, the optical element comprising:
- an outer surface;
- a protrusion extending from the outer surface and shaped to direct light emitted from the light source;
- and
- an indented portion in the outer surface and configured to emit a portion of the light and configured to reduce light intensity in a beam center of the light emitted by the light source,
- wherein the protrusion extends from and is coplanar with a side of the outer surface,
- wherein the protrusion has a first protrusion surface that is a continuous smooth flat surface that extends parallel to and extends only an entire width of the indented portion to focus light emitted from the indented portion of the cover, and
- wherein the protrusion extends perpendicular to a face of the outer surface that extends substantially orthogonally to the side of the outer surface.
4 more elements
A luminaire optical assembly emitting light in a directed beam pattern comprising:
- a pole;
- a head attached to the pole, the head comprising:
- a light source configured to emit light;
- a cover having an outer surface opposite the light source, a protrusion extending from the cover and shaped to direct light emitted from the light source, and
- an indented portion in the cover and configured to emit a portion of the light,
- wherein the indented portion is configured to reduce light intensity in a beam center of the light emitted by the light source,
- wherein the protrusion extends from and is coplanar with a side of the outer surface of the cover,
- wherein the protrusion has a first protrusion surface that is a continuous smooth flat surface that extends parallel to and extends only an entire width of the indented portion to focus light emitted from the indented portion of the cover, and
- wherein the protrusion extends perpendicular to a face of the outer surface of the cover that extends substantially orthogonally to the side of the outer surface of the cover.
6 more elements
Dependencies are inferred from the claim text.