Abstract: The near-infrared ray absorption film of the present invention is a near-infrared ray absorption film in which a near-infrared ray absorption layer comprising a composition containing a near-infrared ray absorbing dye having maximum absorption at a wavelength of 800 to 1200 nm, and a resin is provided on a transparent substrate film, and is characterized that a surfactant having HLB of 2 to 12 is contained in the composition at 0.01 to 2.0% by mass. There can be provided a near-infrared ray absorption film excellent in coated film appearance which has the wide absorbing ability in the near-infrared ray absorbing region, has a high light transmittance in the visible light region, has little change in optical properties with time, and can respond to a higher luminance of a display, and higher-definition and higher image quality by Hi-Vision broadcasting in recent years.

Abstract: An infrared absorption filter which has absorption in the near-infrared region, manifests high light transmission in the visible region, and does not have large absorption of specific wavelength in the visible region, further, is excellent in environmental stability and durability and has little optical defect, the filter comprising an infrared absorption layer laminated at least on one surface of a transparent polymer film, wherein said transparent polymer film is a film comprising a polymer easy adhesion layer laminated at least on one surface, said transparent polymer film contains substantially no particle, and said transparent polymer film contains foreign materials having a size of 20 &mgr;m or more in an amount of 10/m2 or less per unit area of the film.

Abstract: The infrared absorption filter of the present invention has a transmittance of not higher than 30% in the near-infrared region in the wavelength range of 800 to 1100 nm; a difference of 10% or less between a maximum value and a minimum value of transmittance in the visible light region in the wavelength range of 450 to 650 nm; and a transmittance of not lower than 50% at a wavelength of 550 nm, the filter being so excellent in environmental stability that after being left to stand in the air atmosphere at a temperature of 60° C. and a humidity of 95% for 1000 hours, the filter can maintain said spectral property in said range. Consequently, when used for a plasma display or the like, the filter can absorb the unwanted infrared rays radiated from the display, resulting in preventing erroneous operation of a remote control using infrared radiation even in such a high-temperature and high-humidity environment.

Abstract: An infrared absorption filter which has absorption in the near-infrared region, manifests high light transmission in the visible region, and does not have large absorption of specific wavelength in the visible region, further, is excellent in environmental stability and durability and has little optical defect, the filter comprising an infrared absorption layer laminated at least on one surface of a transparent polymer film, wherein said transparent polymer film is a film comprising a polymer easy-adhesion layer laminated at least on one surface, said transparent polymer film contains substantially no particle, and said transparent polymer film contains foreign materials having a size of 20 &mgr;m or more in an amount of 10/m2 or less per unit area of the film.

Abstract: The infrared absorption filter of the present invention has a transmittance of not higher than 30% in the near-infrared region in the wavelength range of 800 to 1100 nm; a difference of 10% or less between a maximum value and a minimum value of transmittance in the visible light region in the wavelength range of 450 to 650 nm; and a transmittance of not lower than 50% at a wavelength of 550 nm, the filter being so excellent in environmental stability that after being left to stand in the air atmosphere at a temperature of 60° C. and a humidity of 95% for 1000 hours, the filter can maintain said spectral property in said range. Consequently, when used for a plasma display or the like, the filter can absorb the unwanted infrared rays radiated from the display, resulting in preventing erroneous operation of a remote control using infrared radiation even in such a high-temperature and high-humidity environment.

Abstract: The infrared absorption filter of the present invention has a transmittance of not higher than 30% in the near-infrared region in the wavelength range of 800 to 1100 nm; a difference of 10% or less between a maximum value and a minimum value of transmittance in the visible light region in the wavelength range of 450 to 650 nm; and a transmittance of not lower than 50% at a wavelength of 550 nm, the filter being so excellent in environmental stability that after being left to stand in the air atmosphere at a temperature of 60° C. and a humidity of 95% for 1000 hours, the filter can maintain said spectral property in said range. Consequently, when used for a plasma display or the like, the filter can absorb the unwanted infrared rays radiated from the display, resulting in preventing erroneous operation of a remote control using infrared radiation even in such a high-temperature and high-humidity environment.