Led driver for vehicle display illumination
US-2015367777-A1 · Dec 24, 2015 · US
Solid state luminaires for general illumination
US8946609B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8946609-B2 |
| Application number | US-201213657141-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 22, 2012 |
| Priority date | Apr 21, 2006 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A lighting panel includes a tile having a first side parallel to a principal plane of the lighting panel, a plurality of solid state lighting devices arranged on the first side of the tile and configured to emit light, a reflector sheet on the first side of the tile, and a brightness enhancement film on the reflector sheet. The reflector sheet may be arranged between the tile and the brightness enhancement film and the brightness enhancement film may be configured to increase the on-axis intensity of emitted light. A luminaire adapted for general illumination includes a lighting panel as described above, a current supply circuit configured to supply an on-state drive current to a string of lighting devices in response to a control signal, a photosensor arranged to receive light from one of the solid state lighting devices, and a control system configured to receive an output signal from the photosensor and to adjust the control signal responsive to the output signal of the photosensor.
First claim
Opening claim text (preview).
That which is claimed is: 1. A lighting panel, comprising: at least one substrate having a first side parallel to a principal plane of the lighting panel; a plurality of solid state lighting devices arranged on the first side of the at least one substrate and configured to emit light; a reflector sheet on the first side of the at least one substrate, wherein the reflector sheet comprises a lambertian reflector configured to reflect and scatter light incident thereon in a range…
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Mechanical Engineering · mapped topic
Physics · mapped topic
Physics · mapped topic
Mechanical Engineering · mapped topic
- G01D11/28Primary
Physics · mapped topic
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- What does patent US8946609B2 cover?
- A lighting panel includes a tile having a first side parallel to a principal plane of the lighting panel, a plurality of solid state lighting devices arranged on the first side of the tile and configured to emit light, a reflector sheet on the first side of the tile, and a brightness enhancement film on the reflector sheet. The reflector sheet may be arranged between the tile and the brightness…
- Who is the assignee on this patent?
- Cree Inc
- What technology area does this patent fall under?
- Primary CPC classification G01D11/28. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 2015 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).