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:
Jan. 31, 2017
Filed:
Dec. 24, 2014
Seiko Epson Corporation, Tokyo, JP;
Gakuji Yamamoto, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A high-performance optical device is provided. An optical device includes a first transmitting portion that is disposed at the center of a predetermined area in a first substrate, a light-receiving portion that receives light passing through the first transmitting portion, N light-emitting portions (N is an integer of 2 or more) that are disposed around the first transmitting portion in the predetermined area, and a control circuit that controls the light-emitting portions. The control circuit is functionally divided into N control portions, namely, first to N-th control portions. The N control portions are disposed in areas overlapping the N light-emitting portions, respectively, when viewed from above. The optical device can reduce noise light and achieve a high S/N ratio, and also the sensitivity of the optical device can be improved.