Title:
OPTICAL FILTER AND AMBIENT LIGHT SENSOR
Document Type and Number:
WIPO Patent Application WO/2020/040123
Kind Code:
A1
Abstract:
The present invention addresses the problem in providing an optical filter that can improve the detection accuracy of an ambient light sensor even if a system for authenticating biometric features and the ambient light sensor are arranged at close positions. The optical filter of the present invention has a substrate (i) and a light scattering layer formed on at least one surface of the substrate (i), and is characterized in that an OD value when measured at a wavelength of 940 nm from the direction perpendicular to the optical filter is 3 or more.
Inventors:
MITSUI TATSURO (JP)
ANDO YOSHIHIKO (JP)
ANDO YOSHIHIKO (JP)
Application Number:
PCT/JP2019/032397
Publication Date:
February 27, 2020
Filing Date:
August 20, 2019
Export Citation:
Assignee:
JSR CORP (JP)
International Classes:
G02B5/22; G01J1/02; G01J1/04; G02B5/26; G02B5/28; G03B11/00; H01L31/0232
Domestic Patent References:
| WO2017094672A1 | 2017-06-08 | |||
| WO2019026675A1 | 2019-02-07 | |||
| WO2018180116A1 | 2018-10-04 |
Foreign References:
| JP2010237339A | 2010-10-21 | |||
| JPH08509070A | 1996-09-24 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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