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US 2013/0170207 A1Published application
Cut-Off LED Lens
AssigneeKoninklijke Philips Electronics N.V.
InventorJOSEPH GARCIA
Life of this patent
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Abstract
Inventive methods and apparatus for a cut-off LED lens (20) that may be utilized with a LED bollard. The cut-off LED lens (20) is positionable over top of a plurality of LEDS (42a, 42b) and may include a plurality of protruding optics (24, 26) each positioned to align with one of the LEDs (42a, 42b).
Claims21
A full cut-off lens for an LED bollard having a plurality of annularly arranged LEDs, comprising:
- a first side having a plurality of annularly arranged LED cavities (34, 36), each of said LED cavities (34, 36) sized to receive at least a portion of a single of said LEDs;
- a second side having a plurality of annularly arranged protruding individual optics (24, 26), each of said individual optics (24, 26) positionally aligned with a single of said LED cavities (34, 36);
- wherein each of said individual optics (24, 26) is configured to redirect substantially all light output generated from a single of said LEDs received within a respective of said LED cavities (34, 36) within a vertical range between nadir and ninety degrees from nadir.
A bollard LED lighting unit, comprising:
- a plurality of annularly arranged LEDs (42a, 42b) mounted to a surface, each of said LEDs (42a, 42b) selectively generating a light output directed downward and away from said surface;
- a lens mounted over top of said LEDs (42a, 42b), said lens including a plurality of annularly arranged individual optics (24, 26);
- wherein each of said individual optics (24, 26) is positionally aligned over top of a single of said annularly arranged LEDs (42a, 42b) and vertically redirects substantially all of said light output therefrom within a range between nadir and ninety degrees from nadir.
A LED lighting unit, comprising:
- a heatsink (50) having a recess (56) in a downward facing portion thereof;
- a plurality of LEDs (42a, 42b) mounted to said recess (56) of said heatsink (50), each of said LEDs (42a, 42b) selectively generating a light output directed downward and away from said recess (56);
- a lens (20) mounted over top of said LEDs (42a, 42b), said lens (20) including optics (24, 26) aligned over top of said LEDs;
- wherein said optics (24, 26) include a first type of optics and a second type of optics which collectively redirect substantially all of said light output from said LEDs (42a, 42b) within a vertical range between nadir and ninety degrees from nadir.
1 more element
Dependencies are inferred from the claim text.