Patents by Inventor Quentin Lin

Quentin Lin 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).

  • Patent number: 10542594
    Abstract: The invention relates to a direct AC driving circuit and a luminaire for driving at least one LED, the driving circuit comprises a LED string (2) that comprises a series connection of at least two LEDs, wherein the LED string (2) is directly powered from a rectified AC mains voltage and a LED string switching unit (1) that is configured to control at least one LED shortening unit (1?) that is arranged in parallel to at least one LED of the LED string (2?). According to the invention, the driving circuit comprises means configured to provide a low supply voltage (VLow) which is also derived from the rectified AC mains voltage (4), wherein the low supply voltage (VLow) is generated from unutilized voltage of the LED-string (2?).
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: January 21, 2020
    Assignees: TRIDONIC GMBH & CO KG, TRIDONIC JENNERSDORF GMBH
    Inventors: Quentin Lin, Istvan Bakk
  • Publication number: 20180213620
    Abstract: The invention relates to a direct AC driving circuit and a luminaire for driving at least one LED, the driving circuit comprises a LED string (2) that comprises a series connection of at least two LEDs, wherein the LED string (2) is directly powered from a rectified AC mains voltage and a LED string switching unit (1) that is configured to control at least one LED shortening unit (1?) that is arranged in parallel to at least one LED of the LED string (2?). According to the invention, the driving circuit comprises means configured to provide a low supply voltage (VLow) which is also derived from the rectified AC mains voltage (4), wherein the low supply voltage (VLow) is generated from unutilized voltage of the LED-string (2?).
    Type: Application
    Filed: July 30, 2015
    Publication date: July 26, 2018
    Applicants: TRIDONIC GMBH & CO KG, TRIDONIC JENNERSDORF GMBH
    Inventors: Quentin Lin, Istvan Bakk