近赤外線吸収色素、光学フィルタおよび撮像装置

Title:

近赤外線吸収色素、光学フィルタおよび撮像装置

Document Type and Number:

Japanese Patent JP7031670

Kind Code:

B2

Abstract:

A near infrared absorbing dye includes a croconium-based compound shown in formula (AI). In formula (AI), ring Z is either an optionally substituted 6-membered ring including no heteroatom or an optionally substituted 5-membered ring including 0 to 3 heteroatoms in the ring, R1 and R2, R2 and R3, and R1 and a carbon atom or heteroatom as a part of ring Z may be linked to each other to respectively form a heteroring A, a heteroring B, and a heteroring C together with a nitrogen atom.

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Inventors:

Shigeki Hattori
Satoshi Okada

Application Number:

JP2019532471A

Publication Date:

March 08, 2022

Filing Date:

July 04, 2018

Export Citation:

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Assignee:

AGC Inc.

International Classes:

G02B5/22; C08L101/00; C09B23/01; G02B5/26; G02B5/28

Domestic Patent References:

JP61031490A
JP2003186145A

Attorney, Agent or Firm:

Patent business corporation glory patent office

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