| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance adhesion of a light absorbing structure with respect to a transparent substrate and a near infrared light reflecting structure, and further to obtain an optical filter having excellent environmental stability. <P>SOLUTION: A light absorbing structure 3 and a near infrared light reflecting structure 4a comprising an inorganic thin film are laminated on a transparent substrate 2 made of synthetic resin, and a near infrared light reflecting structure 4b is disposed on an opposite surface thereof. The light absorbing structure 3 is deposited by mixing a dye having absorption in a near infrared wavelength region and an organic-inorganic hybrid binder. The light absorbing structure 3 has both properties of organic matter and inorganic matter, and can enhance adhesion of both the transparent substrate 2 of an organic material and the near infrared light reflecting structure 4a of an inorganic material. In addition to the above, spectral characteristics stable for a long time period can be maintained by setting water vapor transmission of the light absorbing structure 3 to 3 g/m<SP POS="POST">2</SP>day. <P>COPYRIGHT: (C)2012,JPO&INPIT |
