Optical filter and its production

Abstract

Abstract PURPOSE:To obtain an optical notch filter having excellent function by laminating a pair of solid polymer films having the cholesteric liquid crystal structures of the spiral structures opposite from each other in the winding direction in such a manner that the optical axes thereof are made approximately parallel with each other and that both films are held in direct contact with each other. CONSTITUTION:The solid polymer film 1 fixed with the cholesteric liquid crystal of the either right-handed or left-handed spiral structure having the spiral pitch to scatter selectively the light of the specific wavelength in a visible region is manufactured by subjecting the cholesteric liquid crystal consisting of a soln. mixture composed of a polypeptide compd. and radiation polymerizable monomer to planar orientation then to radiation polymn. The solid polymer film 2 fixed with the cholesteric liquid crystal of the spiral structure having the winding direction opposite from the above-mentioned winding direction is formed by using the soln. mixture consisting of the components or component ratio different from the above-mentioned soln. mixture and is laminated on the surface of the above-mentioned polymer film in such a manner that the optical axes of both films are made approximately parallel with each other and that both films are held in direct contact with each other.

Inventors

• 👤 Yoshihiro Matsuo
• 👤 嘉浩 松尾
• 👤 Shoichi Ishihara
• 👤 將市 石原
• 👤 Kazuhisa Morimoto
• 👤 和久 森本
• 👤 Seiichi Nagata
• 👤 清一 永田
• 👤 Tetsu Ogawa
• 👤 小川　鉄

Bibliographic Details