Patents Assigned to Deilaito Co., Ltd.
  • Surface illuminating apparatus
    Patent number: 5079675
    Abstract: The present invention relates to a surface illuminating apparatus for illuminating an object or a space in a room or the like and an object of the invention is to provide a surface illuminating apparatus in which an illuminance can be increased and can be made uniform and a transparent plate can be made thin.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: January 7, 1992
    Assignee: Deilaito Co., Ltd.
    Inventor: Kouichi Nakayama