Patents by Inventor Tze Keong Chow

Tze Keong Chow 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).

  • Laser projector with two laser diodes
    Patent number: 11936161
    Abstract: A device for laser projection comprises a first laser diode configured to emit a first linearly polarized laser beam extending along a first polarization axis and a second laser diode configured to emit a second linearly polarized laser beam extending along a second polarization axis that is perpendicular to the first polarization axis. A polarization combiner is configured to combine the first and second linearly polarizing laser beams into a combined laser beam, wherein the combined laser beam comprises one of: (1) circular polarization; and (2) elliptical polarization. A measuring device is configured to measure an intensity of the combined laser beam. A control unit is configured to receive the measured intensity of the combined laser beam and is further configured to adjust an intensity of at least one of: (1) the first laser diode; and (2) the second laser diode.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: March 19, 2024
    Assignee: LAP GmbH Laser Applikationen
    Inventors: Hans-Peter Werner, Matthias Lange, Tze Keong Chow
  • LASER PROJECTOR WITH TWO LASER DIODES
    Publication number: 20210408763
    Abstract: A device for laser projection comprises a first laser diode configured to emit a first linearly polarized laser beam extending along a first polarization axis and a second laser diode configured to emit a second linearly polarized laser beam extending along a second polarization axis that is perpendicular to the first polarization axis. A polarization combiner is configured to combine the first and second linearly polarizing laser beams into a combined laser beam, wherein the combined laser beam comprises one of: (1) circular polarization; and (2) elliptical polarization. A measuring device is configured to measure an intensity of the combined laser beam. A control unit is configured to receive the measured intensity of the combined laser beam and is further configured to adjust an intensity of at least one of: (1) the first laser diode; and (2) the second laser diode.
    Type: Application
    Filed: June 25, 2021
    Publication date: December 30, 2021
    Applicant: LAP GmbH Laser Applikationen
    Inventors: Hans-Peter Werner, Matthias Lange, Tze Keong Chow