Title:
LIGHT DETECTION UNIT AND BIOLOGICAL INFORMATION DETECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2015/141184
Kind Code:
A1
Abstract:
A light detection unit includes a light emitter that emits light toward an object of interest, a light receiver that receives light from the object of interest, and a light blocking member that performs light blocking at least above the light receiver. The light blocking member includes a first surface that is provided between the light emitter and the light receiver and prevents direct light from the light emitter from entering the light receiver and a second surface and a third surface that are provided along a direction that intersects the first surface and prevent light from entering the light receiver. Further, the first surface is made of a first material, and the second surface and the third surface are made of a second material different from the first material.
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Inventors:
MATSUO ATSUSHI (JP)
Application Number:
PCT/JP2015/001311
Publication Date:
September 24, 2015
Filing Date:
March 10, 2015
Export Citation:
Assignee:
SEIKO EPSON CORP (JP)
International Classes:
A61B5/0245; A61B5/1455
Foreign References:
| JP2009168670A | 2009-07-30 | |||
| JPH10216114A | 1998-08-18 |
Other References:
See also references of EP 3119274A4
Attorney, Agent or Firm:
WATANABE, Kazuaki et al. (80 Harashinden, Hirooka, Shiojiri-sh, Nagano 85, JP)
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