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:
Feb. 05, 2019
Filed:
Apr. 30, 2015
Applicant:
Osram Gmbh, Munich, DE;
Inventors:
Jun Liu, Guangdong, CN;
Qihui Zhang, Guangdong, CN;
Assignee:
LEDVANCE GMBH, Garching Bei, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 29/00 (2015.01); F21V 3/02 (2006.01); F21V 29/70 (2015.01); F21V 23/00 (2015.01); F21V 3/06 (2018.01);
U.S. Cl.
CPC ...
F21V 3/02 (2013.01); F21V 3/061 (2018.02); F21V 3/062 (2018.02); F21V 23/003 (2013.01); F21V 29/70 (2015.01);
Abstract
The present invention relates to an illumination apparatus () comprising a light engine () and a first lampshade () for accommodating the light engine (), wherein the first lampshade () has a first expansion coefficient, wherein the illumination apparatus () further comprises a second lampshade () for accommodating the first lampshade (), wherein the second lampshade () has a second expansion coefficient smaller than the first expansion coefficient, and is configured such that the changes in size or shape of the first lampshade () can be restrained under a high temperature.