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. 28, 2006
Filed:
Jun. 04, 2002
Applicant:
Peter J. Janssen, Scarborough, NY (US);
Inventor:
Peter J. Janssen, Scarborough, NY (US);
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 (2006.01); G02B 6/27 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light guide comprises two or more straight light guide sections and one or more light coupling elements between sections to transport light from one section to another section. By having at least two TIR (totally internally reflecting) surfaces aligned with the light guiding direction of one of the light guiding sections, a light coupling element of the invention transports light from one light guide section to another with little or no light loss and little or no increase of etendue.