Patents by Inventor Kunio Kuroda

Kunio Kuroda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Linear lighting system
    Patent number: 6601970
    Abstract: The present invention relates to a linear lighting system with a linear light source. According to the invention, all the effective light around the optical axis emitted from the linear light source is introduced to a concave reflector so that the illumination is carried out only with the reflected light. The reflected light is controlled to be a converging or parallel beam of light so that a desired area is illuminated and the luminance is increased. In a mode of the invention, a cylindrical concave reflector 2 whose section taken vertical to a linear light source 1 is a part of an ellipse 2e having a first focus F1 at the linear light source 1 and a second focus F2 at an irradiation plane 3 (irradiation target point). The part of the ellipse covers an effective emission angle 2&thgr; of the linear light source 1, and a reflected light produced at the part from a light within the effective emission angle 2&thgr; is free of obstruction by the linear light source 1.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: August 5, 2003
    Assignee: Kyoto Denkiki Co., Ltd.
    Inventors: Hiroshi Ueda, Kunio Kuroda, Yuzo Nakayama
  • Linear lighting system
    Publication number: 20020006039
    Abstract: The present invention relates to a linear lighting system with a linear light source. According to the invention, all the effective light around the optical axis emitted from the linear light source is introduced to a concave reflector so that the illumination is carried out only with the reflected light. The reflected light is controlled to be a converging or parallel beam of light so that a desired area is illuminated and the luminance is increased. In a mode of the invention, a cylindrical concave reflector 2 whose section taken vertical to a linear light source 1 is a part of an ellipse 2e having a first focus F1 at the linear light source 1 and a second focus F2 at an irradiation plane 3 (irradiation target point). The part of the ellipse covers an effective emission angle 2&thgr; of the linear light source 1, and a reflected light produced at the part from a light within the effective emission angle 2&thgr; is free of obstruction by the linear light source 1.
    Type: Application
    Filed: July 2, 2001
    Publication date: January 17, 2002
    Applicant: KYOTO DENKIKI CO., LTD.
    Inventors: Hiroshi Ueda, Kunio Kuroda, Yuzo Nakayama