Changing Bulk Optical Parameter Patents (Class 359/240)
By actinic radiation (e.g., photochromic) (Class 359/241)
Electro-optic (Class 359/245)
Magneto-optic (Class 359/280)
Acousto-optic (Class 359/285)
Thermo-optic (Class 359/288)
  • Non-linear optical material
    Patent number: 5045239
    Abstract: A non-linear optical material comprises a derivative of chalcone represented by the following general formulae (I) or (II) of: ##STR1## wherein R.sub.1 and R.sub.2 each represent a halogen atom, a hydroxyl group, an amino group, a dimethylamino group, a nitro group, a cyano group, a phenyl group, an acetyl group, an alkyl group having 1 to 18 carbon atoms or an alkyloxy group having 1 to 22 carbon atoms; n.sub.1 and n.sub.2 each represent an interger of from 0 to 21; and m.sub.1 and m.sub.2 each represent an integer of from 0 to 5.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: September 3, 1991
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Seizo Miyata, Toshiyuki Watanabe, Yoshitaka Goto, Akio Hayashi, Masaharu Nakayama