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:
Apr. 12, 2016
Filed:
Jun. 15, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroshi Echizen, Kawasaki, JP;
Mineo Shimotsusa, Machida, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A light guide portion includes a low refractive index portion and a high refractive index portion. The low refractive index portion has a refractive index equal to or lower than that of an insulating layer. The high refractive index portion has a refractive index higher than that of the low refractive index portion. The low refractive index portion is located above a separating portion, and is sandwiched by the high refractive index portion in a first direction. A width in the first direction of the low refractive index portion at a first position distant from the separating portion in a second direction is narrower than a width in the first direction of the low refractive index portion at a second position closer to the separating portion than the first position in the second direction.