NEAR INFRARED ABSORBING COMPOSITION, FILM, INFRARED CUT FILTER, SOLID IMAGE PICKUP ELEMENT, INFRARED ABSORBER, AND COMPOUND
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United States of America Patent
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Issued Date -
Sep 13, 2018
app pub date -
May 10, 2018
filing date -
May 10, 2018
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Abstract
A near infrared absorbing composition includes: a squarylium compound represented by the following Formula (1) and having an absorption maximum of 700 nm or longer; and a resin. In Formula (1), Ar1 and Ar2 each independently represent a divalent conjugated group which has a heteroaryl ring having a chalcogen atom, and R1 to R4 each independently represent a hydrogen atom or a substituent. The film and the infrared cut filter are formed of the near infrared absorbing composition. The solid image pickup element includes the infrared cut filter.
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