Patents by Inventor Shen-Chang Lu

Shen-Chang Lu 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).

  • Filter device and cleaning method therefor
    Patent number: 7276108
    Abstract: A filter device. The filter device comprises a first shaft, a second shaft separated from the first shaft by a predetermined distance, a filter looped around the first shaft and the second shaft and moved as the first and the second shafts rotate, and a brush contacting the filter. The brush removes filtered matter from the filter screen when an electronic device (projector) is started.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: October 2, 2007
    Assignee: BENQ Corporation
    Inventors: Hung-Jen Wei, Tzu-Huan Hsu, Shen-Chang Lu
  • Lighting device and temperature detection method thereof
    Publication number: 20050141222
    Abstract: A lighting device and a temperature detection method thereof. The temperature detection method includes the following steps. A lighting device with an invisible-light filter is provided. The invisible-light filter reflects part of an invisible light of a light beam, generated by the lighting device, back to the lighting device to form a first beam. A thermally-sensitive detection device is then disposed in the lighting device, outside a propagation path of the first beam. The temperature in the lighting device is detected by the thermally-sensitive detection device.
    Type: Application
    Filed: December 29, 2004
    Publication date: June 30, 2005
    Inventors: Shun-Chieh Yang, Bang-Ji Wang, Hung-Jen Wei, Tzu-Huan Hsu, Shen-Chang Lu, Chang-Chien Li
  • Filter device and cleaning method therefor
    Publication number: 20050081495
    Abstract: A filter device. The filter device comprises a first shaft, a second shaft separated from the first shaft by a predetermined distance, a filter looped around the first shaft and the second shaft and moved as the first and the second shafts rotate, and a brush contacting the filter. The brush removes filtered matter from the filter screen when an electronic device (projector) is started.
    Type: Application
    Filed: October 18, 2004
    Publication date: April 21, 2005
    Applicant: BENQ CORPORATION
    Inventors: Hung-Jen Wei, Tzu-Huan Hsu, Shen-Chang Lu