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:
Oct. 16, 2018
Filed:
Feb. 26, 2016
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Kazuhiro Yamaji, Nagaokakyo, JP;
Hirofumi Tsuchimoto, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Nagaokakyo-Shi, Kyoto-Fu, JP;
Abstract
A biological information measurement apparatus capable of improving the SN ratio of a photoplethysmographic signal by reducing stray light in detection light that reaches a light-receiving unit from a light-emitting unit is provided. A biological information measurement apparatus includes a light-emitting unit that irradiates a finger, a light-receiving unit that receives and photoelectrically converts light transmitted through or reflected by the finger and outputs a photoplethysmographic signal, and a processing unit that obtains biological information on the basis of the photoplethysmographic signal. The light-emitting and light-receiving units are disposed, in plan view in a plane perpendicular to the direction of the emitted light or the received light, such that a line passing through the centers of the light-emitting unit and the light-receiving unit is slanted relative to a lengthwise direction of the finger.