Patents by Inventor Xiang S. Cheng

Xiang S. Cheng 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).

  • Hair-removing device with a controllable laser source
    Patent number: 7108690
    Abstract: A hair-removing device (1) includes a laser source (3), an adjustable laser beam manipulator (5) for positioning a laser beam (7) of the laser source (3) in a target position (9) on a skin (11) to be treated, and an image sensor (47) for detecting an image (49) of the skin. The hair-removing device further comprises a control unit (17) which determines a position and orientation on the skin of a hair (13) to be removed, and which determines the target position of the laser beam as a function of said position and orientation of the hair. The control unit brings the laser beam manipulator in a state corresponding to the target position of the laser beam, and activates the laser source when the laser beam manipulator has reached said state. Thus, the hair-removing device is suitable for use by inexperienced users, and is particularly suitable for the consumer market.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: September 19, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Karim M. T. Lefki, Abraham J. Cense, Xiang S. Cheng, Willem D. Van Amstel, Gerrit J. Veldhuis