Patent Number: 7,101,497

Title: Photochromic material and color dose meter using the same

Abstract: To detect an irradiated radiation efficiently, so that the dose can be measured with high sensitivity. A photochromic material comprising an illuminant(s) which emits a light when irradiated with a radiation and a diarylethene photochromic compound(s) having a specific structure, and a color dose meter employing it.

Inventors: Tanaka; Yuki (Yokohama, JP), Kijima; Naoto (Yokohama, JP), Nakamura; Shinichirou (Yokohama, JP), Irie; Masahiro (Fukuoka, JP), Irie; Setsuko (Osaka, JP)

Assignee: Irie; Masahiro

International Classification: G02B 5/23 (20060101); G02F 1/01 (20060101); G03C 8/00 (20060101)

Expiration Date: 9/05/02018