Title:
OPTICAL FILTER AND FINGERPRINT DETECTION DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/095613
Kind Code:
A1
Abstract:
The present invention relates to an optical filter provided with: a resin layer containing at least one dye (X) having a maximum absorption wavelength at 600 to 1,000 nm; and a reflectivity-regulating film layered on both surfaces of the resin layer. The resin layer has: (i-1) an average internal transmittance at 500 to 600 nm of 85% or more; (i-2) a maximum internal transmittance at 700 to 850 nm of 35% or less; and (i-3) a difference of 20% or less between the maximum value and the minimum value of the internal transmittance at 700 to 850 nm.
Inventors:
ORITA YUICHIRO (JP)
SHIONO KAZUHIKO (JP)
NAKAYAMA MOTOSHI (JP)
SHIMADA TAKURO (JP)
SHIONO KAZUHIKO (JP)
NAKAYAMA MOTOSHI (JP)
SHIMADA TAKURO (JP)
Application Number:
PCT/JP2020/041259
Publication Date:
May 20, 2021
Filing Date:
November 04, 2020
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
G02B5/22; A61B5/1172; C09B23/14; C09B57/00; C09B67/46; G02B5/28
Foreign References:
| JP6065169B1 | 2017-01-25 | |||
| JP6549778B1 | 2019-07-24 | |||
| JP2011026377A | 2011-02-10 | |||
| JP2019164269A | 2019-09-26 | |||
| JP2018182022A | 2018-11-15 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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