The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 2021
Filed:
Oct. 09, 2019
Applicant:
Lumileds Llc, San Jose, CA (US);
Inventors:
Antonio Lopez-Julia, Aachen, DE;
Jens Meyer, Aachen, DE;
Assignee:
Lumileds LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); F21S 41/153 (2018.01); H01L 33/32 (2010.01); H01L 33/30 (2010.01); H01L 33/58 (2010.01); F21S 41/24 (2018.01); H01L 27/15 (2006.01); H01L 25/075 (2006.01); H01L 25/16 (2006.01); F21S 41/275 (2018.01);
U.S. Cl.
CPC ...
H01L 33/507 (2013.01); F21S 41/153 (2018.01); H01L 33/30 (2013.01); H01L 33/32 (2013.01); H01L 33/58 (2013.01); F21S 41/24 (2018.01); F21S 41/275 (2018.01); H01L 25/0753 (2013.01); H01L 25/167 (2013.01); H01L 27/156 (2013.01); H01L 2933/0041 (2013.01); H01L 2933/0058 (2013.01); H01L 2933/0091 (2013.01);
Abstract
An optical coupling structure is disposed on a light output surface of a semiconductor LED to facilitate coupling of light emitted by the semiconductor LED through the light output surface. The optical coupling structures comprise light scattering particles and/or air voids embedded in or coated with a thin layer of a material that has an index of refraction close to or matching the index of refraction of the material forming the light output surface of the semiconductor LED.