光学フィルターおよび光学フィルターを用いた装置

Title:

光学フィルターおよび光学フィルターを用いた装置

Document Type and Number:

Japanese Patent JP7088261

Kind Code:

B2

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.

Inventors:

Tatsuya Kasai
Katsuya Nagaya
Masako Horiuchi
Daiki Shigeoka

Application Number:

JP2020184099A

Publication Date:

June 21, 2022

Filing Date:

November 04, 2020

Export Citation:

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