Low Z-height LED arrays with controllable light beams
AssigneeLumileds LLC
InventorsSudhir Subramanya, Willem Sillevis-Smitt, Frederic Diana, Charles Schrama, Alan McReynolds, Yifeng Qiu
Life of this patent
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Abstract
A light source useful for architectural lighting, general lighting, street lighting, or other lighting applications includes a plurality of light emitting diodes. A least some light emitting diodes can be sized between 30 microns and 500 microns. A plurality of micro-optics sized less than 1 millimeter are positioned over at least some of the plurality of light emitting diodes. A controller may be connected to selectively power groups of the plurality of light emitting diodes to provide different light beam patterns.
Claims16
A light source comprising:
- a plurality of light emitting diodes each having a light emitting surface sized between 30 microns and 500 microns;
- and
- a plurality of micro-optics each having an optical axis and dimensions perpendicular to the optical axis of less than or equal to 1 millimeter, each micro-optic spaced apart from adjacent ones of the micro-optics by at least 1 millimeter, each micro-optic positioned over at least one of the plurality of light emitting diodes to collect and direct light emitted through its light emitting surface, at least some of the micro-optics oriented with their optical axes at an angle other than 90 degrees with respect to the light emitting surfaces of the light emitting diodes over which they are positioned.
A light source comprising:
- a plurality of light emitting diodes each having a light emitting surface sized between 30 microns and 500 microns;
- a plurality of micro-optics each spaced apart from adjacent ones of the micro-optics by at least 1 millimeter apart from each other, each of the micro-optics having an optical axis and dimensions perpendicular to the optical axis of less than or equal to 1 millimeter, each micro-optic positioned over at least one of the plurality of light emitting diodes to collect and direct light emitted through its light emitting surface, at least some of the micro-optics oriented with their optical axes at an angle other than 90 degrees with respect to the light emitting surfaces of the light emitting diodes over which they positioned;
- and
- a flexible substrate positioned to support the plurality of light emitting diodes and the plurality of micro-optics, the flexible substrate bendable to allow differing directionality of light beams.
Dependencies are inferred from the claim text.