LED device with re-emitting semiconductor construction and converging optical element

• US 7,952,110 B2
• Filed: 06/11/2007
• Issued: 05/31/2011
• Est. Priority Date: 06/12/2006
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Haase, Michael A.
• Primary Examiner(s): Tran; Tan N
• Application Number:
  US11/761,144
• Publication Number:
  US 20070284603A1
• Time in Patent Office: 1,450 Days
• Field of Search: 257 14- 25, 257/88, 257/89, 257/90, 257/95, 257/98, 257/103
• US Class Current: 257/98
• CPC Class Codes: G02B 19/0028 refractive and reflective surfaces, e.g. non-imaging catadioptric systems
• CPC Class Codes: G02B 19/0061 the light source comprising a LED semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission H01L33/00
• CPC Class Codes: G02B 19/0071 adapted to illuminate a complete hemisphere or a plane extending 360 degrees around the source
• CPC Class Codes: G02B 19/0095 for use with ultraviolet radiation
• CPC Class Codes: H01L 33/08 with a plurality of light emitting regions, e.g. laterally discontinuous light emitting layer or photoluminescent region integrated within the semiconductor body H01L27/15 takes precedence
• CPC Class Codes: H01L 33/502 Wavelength conversion materials
• CPC Class Codes: H01L 33/58 Optical field-shaping elements

Abstract

A light source is provided comprising an LED component having an emitting surface, which may comprise: i) an LED capable of emitting light at a first wavelength; and ii) a re-emitting semiconductor construction which comprises a second potential well not located within a pn junction having an emitting surface; or which may alternately comprise a first potential well located within a pn junction and a second potential well not located within a pn junction; and which additionally comprises a converging optical element.

Claims

1. A light source, comprising:

a) an LED component comprising;

i) an LED capable of emitting light at a first wavelength; and

ii) a re-emitting semiconductor construction which comprises a potential well not located within a pn junction having an emitting surface; and

b) an optical element having a base, two converging sides, and two diverging sides, wherein the base is optically coupled to the emitting surface.

2. A graphic display device comprising the light source according to claim 1.

3. An illumination device comprising the light source according to claim 1.