OPTICAL FILTER AND USE THEREOF

WIPO Patent Application WO/2020/054695

A1

The present invention addresses the problem of providing an optical filter which achieves a balance between a low incident angle dependence in the near-infrared region and superior red color transmittance characteristics, and for which ghosting is improved. This optical filter is characterized by satisfying the following conditions (A) to (D): (A) the average value of transmittance when measured from the vertical direction in the wavelength range of 430-580 nm is no less than 75%; (B) the average value of transmittance when measured from the vertical direction in the wavelength range of 800-1000 nm is no more than 10%; (C) the average value of transmittance when measured from the vertical direction in the wavelength range of 700-750 nm is greater than 46%; and (D) the absolute value of the difference between a value (Ya), which is the shortest wavelength at which the transmittance when measured from the vertical direction in the wavelength range of 560-800 nm is 50%, and a value (Yb), which is the shortest wavelength at which the transmittance when measured from an angle of 30° relative to the vertical direction is 50%, is less than 15 nm.

KISHIDA HIROYUKI (JP)
NAGAYA KATSUYA (JP)
YAMAMOTO TATSUYUKI (JP)
NAGAO ATSUKI (JP)

PCT/JP2019/035476

March 19, 2020

September 10, 2019

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JSR CORP (JP)

G02B5/28; G02B5/20; G02B5/22; G03B11/00; H01L27/146; H04N5/225

WO2018043564A1	2018-03-08
WO2018155634A1	2018-08-30
WO2016133099A1	2016-08-25
WO2018088561A1	2018-05-17

JP2005338395A	2005-12-08
JP2014048402A	2014-03-17
JP2016142891A	2016-08-08
JP2019012121A	2019-01-24

SSINPAT PATENT FIRM (JP)

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