Patents by Inventor Depu Chin

Depu Chin 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).

  • Focusable spotlight with a negative lens
    Patent number: 6575598
    Abstract: A spotlight has a curved reflector (1, 1′) and a lamp (2, 2′) arranged inside a cavity formed by the reflector (1, 1′). The lamp (2, 2′) and the reflector (1, 1′) are movable relative to one another in a direction of a main optical axis of the spotlight. A converging lens (5) is arranged in front of the reflector (1, 1′) in a direction of light emission. A dispersive lens (6) is arranged between the reflector (1, 1′) and the converging lens (5).
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: June 10, 2003
    Assignee: Dedo Weigert Film GmbH
    Inventors: Dedo Weigert, Depu Chin
  • Spotlight with an adjustable angle of radiation and with an aspherical front lens
    Patent number: 6499862
    Abstract: A spotlight has an adjustable angle of radiation with modification of the angle of radiation being achieved in a manner other than by shading a beam path with a screen or mask. The spotlight has an interior light source (4) and a first lens (2) that is structured as a front lens. The first lens (2) is an aspherical lens.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: December 31, 2002
    Assignee: Dedo Weigert Film GmbH
    Inventors: Dedo Weigert, Depu Chin
  • Focusable spotlight with a negative lens
    Publication number: 20020114160
    Abstract: A spotlight has a curved reflector (1, 1′) and a lamp (2, 2′) arranged inside a cavity formed by the reflector (1, 1′). The lamp (2, 2′) and the reflector (1, 1′) are movable relative to one another in a direction of a main optical axis of the spotlight. A converging lens (5) is arranged in front of the reflector (1, 1′) in a direction of light emission. A dispersive lens (6) is arranged between the reflector (1, 1′) and the converging lens (5).
    Type: Application
    Filed: December 18, 2001
    Publication date: August 22, 2002
    Inventors: Dedo Weigert, Depu Chin