| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laminated polyester film superior in dimensional stability, inhibition of interference fringe, adhesion under a high temperature high humidity environment, coating properties in an in-line coat method, and the like, and to provide an optical filter for PDP using the laminated polyester film. <P>SOLUTION: The laminated polyester film is a polyester film which includes easy to adhere layers (C and D layers), wherein the layer thickness of the C layer is 1-100 nm, the spectral reflectance in the wavelength of 550 nm of the side of the C layer is at least 5.9% and at most 8.3%, and the spectral reflectance in the wavelength of 550 nm of the side of the D layer is at least 3.0% and at most 6.0%. In addition, the optical filter is formed by laminating an antireflection layer which has a high refraction hard coat layer including at least an active ray curable resin on the surface of the C layer of the laminated film; and laminating a near infrared ray shielding layer containing a coloring matter having a near infrared ray absorbing power on the surface of the side of the D layer, wherein the average undulation amplitude of the surface reflection rate in the wavelength of 400-600 nm of the side of the hard coat layer is at most 1.0%. <P>COPYRIGHT: (C)2011,JPO&INPIT |
