OPTICAL FILTER AND DEVICE USING OPTICAL FILTER

Title:

OPTICAL FILTER AND DEVICE USING OPTICAL FILTER

Document Type and Number:

WIPO Patent Application WO/2018/043564

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing an optical filter that achieves, at a high level, both color shading suppression and ghost suppression in a camera image, both of which cannot be sufficiently achieved by conventional optical filters. This optical filter is characterized by having a substrate satisfying requirements (a) to (c): (a) the substrate has a layer containing a compound (A) having an absorption maximum in a wavelength region of 650-760 nm inclusive; (b) a difference (X2-X1) between the shortest wavelength (X1) and the second shortest wavelength (X2) at which transmissivity becomes 10% in a wavelength region of 640 nm or more is 50 nm or more; and (c) transmissivities at wavelengths of 900 nm, 1000 nm, and 1100 nm are each 65% or less.

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Inventors:

KASAI TATSUYA (JP)
NAGAYA KATSUYA (JP)
HORIUCHI MASAKO (JP)
SHIGEOKA DAISUKE (JP)

Application Number:

PCT/JP2017/031156

Publication Date:

March 08, 2018

Filing Date:

August 30, 2017

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Assignee:

JSR CORP (JP)

International Classes:

G02B5/22; B32B7/02; C09B23/00; C09B47/04; C09B57/00; G02B5/26; G02B5/28; H01L27/146

Domestic Patent References:

WO2012169447A1

2012-12-13

Foreign References:

JP2005338395A	2005-12-08
JP2006301489A	2006-11-02
JP2014059550A	2014-04-03
JP2007131748A	2007-05-31

Attorney, Agent or Firm:

SSINPAT PATENT FIRM (JP)

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