公开(公告)号：US20180356576A1

公开(公告)日：2018-12-13

申请号：US16106485

申请日：2018-08-21

Applicant: AGC INC.

Inventor： Kazuhiko SHIONO ,  Hiroyuki ARISHIMA ,  Teppei KONISHI ,  Hiroki HOTAKA

IPC: G02B5/28 ,  C09B57/00 ,  C09B67/22 ,  G02B1/04 ,  G02B5/20 ,  C08K5/3417 ,  G02B5/22

CPC classification number: G02B5/282 ,  C08K5/3417 ,  C09B57/007 ,  C09B67/0034 ,  G02B1/04 ,  G02B5/208 ,  G02B5/223 ,  C08L2666/70

Abstract: There is provided a near-infrared cut filter which has a visible light transmitting property and a near-infrared shielding property both at high levels by that its transmission spectrum has a steep inclination in the vicinity of the boundary between the visible light and the near-infrared, and which can also be sufficiently reduced in size and thickness. The near-infrared cut filter has a near-infrared absorbing layer which contains a near-infrared absorbing dye containing at least one dye in which a condensed ring structure containing at least a benzene ring and a ring having nitrogen atom is bonded to both sides of a squarylium skeleton and which have a carboxylic acid amide structure at a second position of the benzene ring (where the carboxylic acid has a substituent having 5 to 25 having one or more branches), and a transparent resin with a refractive index of 1.45 or more.