Lens with controlled light refraction
AssigneeCree, Inc.
InventorsKurt S. Wilcox, Craig Raleigh, Corey Goldstein
Life of this patent
Estimating the term…
Abstract
A lens for distribution of light from a light emitter having an emitter axis. The lens including an outer surface receiving light from the inner surface which defines an inner cavity and includes an axial inner-surface portion of a conical shape formed by a substantially cross-sectionally linear inner region extending outwardly from positions at the emitter axis toward an open end of the inner cavity. An LED light fixture comprising a mounting structure supporting a plurality of spaced LED light sources with a plurality of the lenses each in alignment with a corresponding one of the light sources.
Claims18
A lens for distribution of light from a light emitter having an emitter axis, comprising:
- a refracting inner surface defining an inner cavity with an open end, the inner surface comprising an axially-adjacent inner-surface portion of a substantially conical shape formed by a substantially cross-sectionally linear inner region extending outwardly away from the emitter axis toward the open end of the inner cavity;
- and
- an outer surface receiving light from the inner surface and including an axial output region configured for receiving light from the axially-adjacent inner-surface portion and refracting it away from the emitter axis.
An LED light fixture comprising a mounting structure supporting a plurality of spaced LED light sources with a plurality of lenses each in alignment with a corresponding one of the light sources, each of the lenses having an outer surface receiving light from a refracting inner surface which defines an inner cavity with an open end, the inner surface comprising an axially-adjacent inner-surface portion of a substantially conical shape formed by a substantially cross-sectionally linear inner region extending outwardly away from a corresponding emitter axis toward the open end of the inner cavity, the outer surface including an axial output region configured for receiving light from the axially-adjacent inner-surface portion and refracting it away from the axis.
Dependencies are inferred from the claim text.