NEAR INFRARED RAY ABSORBING FILTER

摘要

PROBLEM TO BE SOLVED: To provide a near IR absorbing filter widely having absorption in the near IR region and having high transmittance in the visible region and a blue-gray tone. SOLUTION: The near IR absorbing filter has <=10% transmittance in the near IR region of 900-1,100 nm wavelength, >=60% minimum transmittance in the visible regions of 440-500 nm wavelength and 640-700 nm wavelength and <=60% maximum transmittance in the visible region of 550-600 nm wavelength.