公开(公告)号：US11693163B2

公开(公告)日：2023-07-04

申请号：US17017031

申请日：2020-09-10

Applicant: AGC Inc.

Inventor： Kazuhiko Shiono ,  Keigo Matsuura ,  Sayuri Higashitamori ,  Hiroki Hotaka

IPC: G02B1/04 ,  G02B5/20 ,  C09B57/00 ,  G01J1/04 ,  G02B5/22 ,  H01L27/146

CPC classification number: G02B5/208 ,  C09B57/007 ,  G01J1/0488 ,  G02B1/04 ,  G02B5/22 ,  H01L27/14625

Abstract: An optical filter includes an absorption layer which increases a visible light transmittance while having a good near-infrared blocking characteristic, and which is excellent in not only adhesiveness with respect to a layer to be abutted, but also light resistance. The optical filter includes: an absorption layer containing a near-infrared absorbing dye containing a squarylium-based dye and a transparent resin; and an inorganic or organic material in contact with the absorption layer. The squarylium-based dye has a squarylium skeleton and condensed ring structures bonded thereto respectively on both sides thereof, the condensed ring structures each including a benzene ring and a nitrogen atom as an annular atom, each benzene ring having an urethane structure in the second position.

公开(公告)号：US11029457B2

公开(公告)日：2021-06-08

申请号：US16369653

申请日：2019-03-29

Applicant: AGC Inc.

Inventor： Kazuhiko Shiono ,  Asana Yoshioka ,  Shoko Suzuki ,  Hiroki Hotaka

IPC: F21V9/04 ,  F21V9/06 ,  G02B5/08 ,  G02B5/20 ,  C09B23/10 ,  C09B57/00 ,  G02B5/22

Abstract: To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol·cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm: In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R1 is a monovalent hydrocarbon group which may have a substituent, or the like, R2 to R5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.

公开(公告)号：US10809428B2

公开(公告)日：2020-10-20

申请号：US15806596

申请日：2017-11-08

Applicant: AGC Inc.

Inventor： Kazuhiko Shiono ,  Keigo Matsuura ,  Sayuri Higashitamori ,  Hiroki Hotaka

IPC: G02B5/20 ,  G02B5/22 ,  C09B57/00 ,  G01J1/04 ,  G02B1/04 ,  H01L27/146

Abstract: An optical filter includes an absorption layer which increases a visible light transmittance while having a good near-infrared blocking characteristic, and which is excellent in not only adhesiveness with respect to a layer to be abutted, but also light resistance. The optical filter includes: an absorption layer containing a near-infrared absorbing dye containing a squarylium-based dye and a transparent resin; and an inorganic or organic material in contact with the absorption layer. The squarylium-based dye has a squarylium skeleton and condensed ring structures bonded thereto respectively on both sides thereof, the condensed ring structures each including a benzene ring and a nitrogen atom as an annular atom, each benzene ring having an urethane structure in the second position.

公开(公告)号：US10598834B2

公开(公告)日：2020-03-24

申请号：US15662482

申请日：2017-07-28

Applicant: AGC Inc.

Inventor： Kazuhiko Shiono ,  Keigo Matsuura ,  Hiroki Hotaka

IPC: G02B5/20 ,  B32B7/02 ,  B32B27/20 ,  G02B5/26 ,  G02B5/28 ,  G02B5/22 ,  G02B1/04

Abstract: An optical filter whose transmitting characteristics for visible light are favorably maintained and at the same time, whose blocking characteristics for near-infrared light, in particular, with a large incident angle deteriorates less. The optical filter includes an absorption layer and a reflection layer, and satisfies the requirements: in a spectral transmittance curve for a 0° incident angle, an average transmittance for 430 to 620 nm wavelength light is 65% or more, and a wavelength exhibiting a 50% transmittance is in a 600 to 700 nm wavelength; in a 615 to 725 nm wavelength, an average value of absolute values of differences in transmittance between the spectral transmittance curve for the 0° incident angle and 30° incident angle is 8%/nm or less; and in a spectral transmittance curve for a 60° incident angle, the maximum transmittance for 730 to 1000 nm wavelength light is 15% or less.

公开(公告)号：US10351718B2

公开(公告)日：2019-07-16

申请号：US15355190

申请日：2016-11-18

Applicant: AGC Inc.

Inventor： Kazuhiko Shiono ,  Keigo Matsuura ,  Hiroki Hotaka

IPC: C09D5/32 ,  G02B1/115 ,  H04N5/335 ,  G02B1/113 ,  G02B5/28 ,  C09D201/00 ,  C09B57/00 ,  C09D145/00 ,  C09D167/00 ,  C09D169/00 ,  G02B5/20 ,  G02B5/22 ,  H01L27/146 ,  C09D7/41 ,  C09B23/10 ,  C09B67/22 ,  C08K5/00 ,  C08K5/3415 ,  C08K5/3417

Abstract: An optical filter includes an absorption layer containing a near-infrared absorbing dye with an absorption characteristic in dichloromethane satisfying (i-1) to (i-3). (i-1) In an absorption spectrum of a wavelength of 400 to 800 nm, there is a maximum absorption wavelength λmax in 670 to 730 nm. (i-2) Between a maximum absorption coefficient εA of light with a wavelength of 430 to 550 nm and a maximum absorption coefficient εB of light with a wavelength of 670 to 730 nm, the following relational expression: εB/εA≥65 is established. (i-3) In a spectral transmittance curve, the difference between a wavelength λ80 with which the transmittance becomes 80% on a shorter wavelength side than the maximum absorption wavelength with the transmittance at the maximum absorption wavelength λmax set to 10% and the maximum absorption wavelength λmax is 65 nm or less.