NEAR INFRARED-ABSORBING PHTHALOCYANINE-BASED COMPOUND OF EXCELLENT TRANSMITTANCE AT VISIBLE RANGE, AND OPTICAL FILTER COMPRISING THE SAME

摘要

PURPOSE: A near infrared ray-absorbing phthalocyanine compound is provided to prevent changes in characteristics after long-term use and to show superior transmittance in a range of visible light and absorption in a range of near infrared ray. CONSTITUTION: A phthalocyanine compound is denoted by chemical formula 1. A laminate for absorbing near infrared ray contains an absorption layer containing one or more kinds of phthalocyanine compounds. The phthalocyanine compounds of the absorption layer are coated on one side or both sides of a transparent film. A near infrared ray-absorbing optical filter contains the laminate.