IP Library Granted Patent US 7,932,527
Granted Patent B2
US 7,932,527 · App. 11/475,186 · Granted Apr 26, 2011

Light-emitting device and illuminator

Assignee: Sanyo Electric Co., Ltd.
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Quick Facts
Patent No.
US 7,932,527
App. No.
11/475,186
Granted
Apr 26, 2011
Kind
B2
Abstract

A light-emitting device, having high light extraction efficiency, capable of obtaining diffused light is obtained. This light-emitting device comprises a light-emitting diode, a portion, formed on a plane substantially parallel to a light-emitting surface of the light-emitting diode, having a dielectric constant periodically modulated with respect to the in-plane direction of the plane substantially parallel to the light-emitting surface and a member provided on the side of the light-emitting surface of the light-emitting diode for diffusing light emitted from the light-emitting diode.

Claims (16)

1. An illuminator comprising a light-emitting device including:

a light-emitting diode;

a member provided on the side of a light-emitting surface of said light-emitting diode for diffusing light emitted from said light-emitting diode; and

a reflector, wherein

said light-emitting diode has an emission layer and said emission layer is formed substantially parallel to said light-emitting surface,

said light emitted from said light-emitting diode is parallelized perpendicularly to said light-emitting surface, and

said light-emitting device is mounted on the reflector.

2. The illuminator according to claim 1 , further comprising a fluorescent body arranged at a prescribed interval from said light-emitting device for converting light emitted from said light-emitting device to white light.

3. The illuminator according to claim 2 , wherein

said fluorescent body is formed by mixing fluorescent materials having a plurality of colors with each other.

4. The illuminator according to claim 1 , wherein

a plurality of said light-emitting diodes constituting said light-emitting device are arranged in the form of a matrix in plane.

5. The illuminator according to claim 4 , wherein

said member diffusing emitted said light includes a lens, and a plurality of said lenses are arranged in the form of a matrix in plane.

6. The illuminator according to claim 4 , wherein

said member for diffusing light from said light-emitting diode consists of lens arranged at a ratio of one to a plurality of light-emitting diodes.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2023
From: EPISTAR CORPORATION
To: LEDVANCE GMBH
Reel/Frame 065469/0005 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 20, 2017
From: SANYO ELECTRIC CO., LTD.
To: EPISTAR CORPORATION
Reel/Frame 041652/0122 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 1, 2016
From: FUTURE LIGHT LIMITED LIABILITY COMPANY
To: SANYO ELECTRIC CO., LTD.
Reel/Frame 040523/0797 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 30, 2012
From: SANYO ELECTRIC CO., LTD.
To: FUTURE LIGHT, LLC
Reel/Frame 027957/0258 →
Priority Claims (1)
JP 2003-088487 · Mar 27, 2003 · national
Continuity (2)
Division 10807161 · Mar 24, 2004
Related Publication 20060237739A1 · Oct 26, 2006