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Patent Searching and Data


Title:
OPTICAL FILTER AND COMPOSITION FOR OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2019/208518
Kind Code:
A1
Abstract:
An optical filter (1a) is provided with a UV-IR absorption layer (10), and has a haze of 5% or less. The UV-IR absorption layer (10) includes a UV-IR absorbing agent capable of absorbing ultraviolet rays and infrared rays, formed by copper ions and phosphonic acid and/or sulfonic acid. A high-quality image can thereby be obtained by an imaging device in which the optical filter (1a) is incorporated, for example.

Inventors:
KUBO Yuichiro (Limited 5-27, Mita 3-chome, Minato-k, Tokyo 21, 〒1086321, JP)
CAI Lei (Limited 5-27, Mita 3-chome, Minato-k, Tokyo 21, 〒1086321, JP)
SHIMMO Katsuhide (Limited 5-27, Mita 3-chome, Minato-k, Tokyo 21, 〒1086321, JP)
Hitomi MASUDA (Limited 5-27, Mita 3-chome, Minato-k, Tokyo 21, 〒1086321, JP)
Application Number:
JP2019/017086
Publication Date:
October 31, 2019
Filing Date:
April 22, 2019
Export Citation:
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Assignee:
NIPPON SHEET GLASS COMPANY, LIMITED (5-27, Mita 3-chome Minato-k, Tokyo 21, 〒1086321, JP)
International Classes:
G02B5/22; H01L27/146
Attorney, Agent or Firm:
KAMADA Koichi et al. (8th Fl, UMEDA PLAZA BLDG. ANNEX 4-3-25, Nishitenma, Kita-ku, Osaka-sh, Osaka 47, 〒5300047, JP)
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