METHOD FOR MANUFACTURING NEAR INFRARED ABSORBING COMPOUND, NEAR INFRARED ABSORBING COMPOSITION, NEAR INFRARED CUT FILTER, SOLID-STATE IMAGE SENSING DEVICE AND REFINING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a near infrared absorbing compound which may form a near infrared cut filter excellent in heat resistance, a near infrared absorbing composition, a near infrared cut filter, a solid-state image sensing device and a refining method.SOLUTION: The method for manufacturing the near infrared absorbing compound includes a step below: a porous separation material is used to refine a solution including at least one of a polymer (A1) containing a coordination portion, and a compound obtained by a reaction of the polymer (A1) containing the coordination portion and a metal constituent.