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Patent Searching and Data


Title:
OPTICAL FILTER, CAMERA MODULE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/168090
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an optical filter capable of achieving both color shading suppression and ghost suppression of a camera image at a high level. This optical filter fulfills requirements (a) and (b): (a) in a wavelength region of 430-580 nm, a minimum value Tb-0 of transmittance of light incident from a vertical direction, a minimum value Tb- 3 0 of transmittance of light incident from a direction inclined at 30 degrees with respect to the vertical direction, and a minimum value Tb-60 of transmittance of light incident from a direction inclined at 60 degrees with respect to the vertical direction are all 55% or more and less than 90%; and (b) in a wavelength region of 700-780 nm, a mean value ODa-0 of optical density to the light incident from the vertical direction, a mean value ODa -30 of optical density to the light incident from the direction inclined at 30 degrees with respect to the vertical direction, a mean value ODa -60 of optical density to the light incident from the direction inclined at 60 degrees with respect to the vertical direction are all 1.8 or more.

Inventors:
TANAKA Yukie (9-2 Higashi-Shinbashi 1-chome, Minato-k, Tokyo 40, 〒1058640, JP)
NAGAYA Katsuya (9-2 Higashi-Shinbashi 1-chome, Minato-k, Tokyo 40, 〒1058640, JP)
KISHIDA Hiroyuki (9-2 Higashi-Shinbashi 1-chome, Minato-k, Tokyo 40, 〒1058640, JP)
Application Number:
JP2019/007777
Publication Date:
September 06, 2019
Filing Date:
February 28, 2019
Export Citation:
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Assignee:
JSR CORPORATION (9-2 Higashi-Shinbashi 1-chome, Minato-ku Tokyo, 40, 〒1058640, JP)
International Classes:
G02B5/22; G03B11/00; H04N5/225
Domestic Patent References:
WO2016171219A12016-10-27
WO2012169447A12012-12-13
Foreign References:
JP2013156460A2013-08-15
JP2016146619A2016-08-12
JP2014052431A2014-03-20
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (Gotanda Yamazaki Bldg. 6F, 13-6 Nishigotanda 7-chome, Shinagawa-k, Tokyo 31, 〒1410031, JP)
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