Light emitting diode lamp
US-9200764-B2 · Dec 1, 2015 · US
Reduced contrast LED lighting system
US9512977B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9512977-B2 |
| Application number | US-201313749796-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 25, 2013 |
| Priority date | Jan 26, 2012 |
| Publication date | Dec 6, 2016 |
| Grant date | Dec 6, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
A reduced contrast LED lighting system is disclosed. A plurality optical elements in a fixture is arranged to produce a light pattern with reduced visible contrast between the various areas where light can be perceived leaving the fixture. In some embodiments of the invention the LED light source is disposed at the reflector, and in some such embodiments a partially reflective lens plate is disposed opposite the LED light source. In some embodiments the LED light source is placed opposite the reflector. The lighting system can include a lens arrangement with a partially reflective lens plate connected to a heatsink, or two lens plates adjacent to the LED light source and the heatsink. The fixture can include a plurality of light pipes or slots to direct light into spaces between the lens plates and the heatsink.
First claim
Opening claim text (preview).
The invention claimed is: 1. A light fixture comprising: a back reflector including a flat central region; a heatsink including a mounting surface and fins; a plurality of LED devices on the mounting surface of the heatsink, the LED devices facing the flat central region of the back reflector; at least two lens plates adjacent to the heatsink; and a plurality of slots in a curved portion of the lens plates or light pipes through the curved portion of the lens plates, the s…
Assignees
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Classifications
- F21V7/0066Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9512977B2 cover?
- A reduced contrast LED lighting system is disclosed. A plurality optical elements in a fixture is arranged to produce a light pattern with reduced visible contrast between the various areas where light can be perceived leaving the fixture. In some embodiments of the invention the LED light source is disposed at the reflector, and in some such embodiments a partially reflective lens plate is dis…
- Who is the assignee on this patent?
- Cree Inc
- What technology area does this patent fall under?
- Primary CPC classification F21V7/0066. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 06 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).