THERMAL BONDING FILM FOR COLOR CORRECTION, AND NEAR IR RAY CUT-OFF FILTER WITH THERMAL BONDING FUNCTION USING THE SAME

摘要

PPROBLEM TO BE SOLVED: To provide a thermal bonding film for color correction which does not require aging and can deal with various colors at a low cost, and an IR ray cut-off filter with a thermal bonding function using the same. PSOLUTION: The thermal bonding film for color correction is formed of a thermoplastic transparent resin containing a correction dyestuff having a Vicat softening point of 30 to 150C, having the maximum absorption wavelength at 380 to 780 nm and having a mass light absorption coefficient of the maximum absorption wavelength of 10 mL/g so as to have a thickness of 50 to 200 m by a solution casting method, and the IR ray cut-off filter with the thermal bonding function is formed by laminating the thermal bonding film for color correction and the IR ray cut-off filter, wherein the average ray transmittance within a range of a wavelength 380 to 780 nm is 40% and the average ray transmittance within a range of a wavelength 850 to 1,100 nm is 20%. PCOPYRIGHT: (C)2006,JPO&NCIPI