OPTICAL SENSOR AND ELECTRONIC DEVICE

Title:

OPTICAL SENSOR AND ELECTRONIC DEVICE

Document Type and Number:

WIPO Patent Application WO/2013/132852

Kind Code:

A1

Abstract:

Provided is an optical sensor and an electronic device for suppressing a decline in light-dispersion characteristics. The optical sensor includes a light-receiving element, an optical filter (140) through which light of a specified wavelength among incident light passes onto the light-receiving region of the light-receiving element, and an angle-limiting filter (120) for limiting the incidence angle of incident light passing through the optical filter (140). Taking θA to be the limit angle of the angle-limiting filter (120) and the RTP as the height from the top surface of the angle-limiting filter (120) to the top surface of the optical filter, then if the distance from the edge of the optical filter (140) in plan view in relation to the top surface of the angle-limiting filter (120) to the edge of an opening of the angle-limiting filter (120) is defined as an overlap distance (OV), then tan-1(OV/RTP)>θA is fulfilled.

Inventors:

UEMATSU AKIRA (JP)
TERASHIMA YOSHIYUKI (JP)
SATO YOICHI (JP)
MATSUO ATSUSHI (JP)

Application Number:

PCT/JP2013/001423

Publication Date:

September 12, 2013

Filing Date:

March 06, 2013

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)

International Classes:

G01J1/06; G01J3/26; H01L27/14; A61B5/0245; A61B5/1455; G01N21/27

Domestic Patent References:

WO2009148134A1

2009-12-10

Foreign References:

JP2011203247A	2011-10-13
JP2012194054A	2012-10-11
JP2006013520A	2006-01-12
JP2011203247A	2011-10-13
JP2011205088A	2011-10-13

Other References: