OPTICAL FILTER AND OPTICAL DEVICE

Title:

OPTICAL FILTER AND OPTICAL DEVICE

Document Type and Number:

WIPO Patent Application WO/2017/110939

Kind Code:

A1

Abstract:

This optical filter is characterized in being provided with a wavelength-selectable absorbent layer containing microparticles and one or more types of pigments for absorbing visible light, and the wavelength-selectable absorbent layer has an average rectilinear transmission of 80% or more with respect to light in a first near infrared waveband, which is a waveband of at least a continuous 15 nm in the near infrared region, and has a diffuse reflectance of 0.04% or more with respect to light having a wavelength of 532 nm.

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Inventors:

ISHIDO SO (JP)
KOYANAGI ATSUSHI (JP)

Application Number:

PCT/JP2016/088233

Publication Date:

June 29, 2017

Filing Date:

December 21, 2016

Export Citation:

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Assignee:

ASAHI GLASS CO LTD (JP)

International Classes:

G02B5/22; G02B1/11; G02B5/26; G02B5/28

Foreign References:

JP2010002704A	2010-01-07
JP2010072616A	2010-04-02
JP2008009238A	2008-01-17
JP2008160115A	2008-07-10
JP2014203063A	2014-10-27
JP2005323892A	2005-11-24

Attorney, Agent or Firm:

EIKOH PATENT FIRM, P.C. (JP)

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