Patents by Inventor Chih-Husan Chang

Chih-Husan Chang 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).

  • Spectrometer with variable beam power and shape
    Patent number: 10072980
    Abstract: At least one light source is configured to emit at least one beam into a sample volume of an absorbing medium. In addition, at least one detector is positioned to detect at least a portion of the beam emitted by the at least one light source. Further, at least one beam modification element is positioned between the at least one detector and the at least one light source to selectively change at least one of (i) a power intensity of, or (ii) a shape of the beam emitted by the at least one light source as detected by the at least one detector. A control circuit is coupled to the beam modification element. Related apparatus methods, articles of manufacture, systems, and the like are described.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: September 11, 2018
    Assignee: SpectraSensors, Inc.
    Inventors: Alfred Feitisch, Xiang Liu, Chih-Husan Chang, Hsu-Hung Huang
  • SPECTROMETER WITH VARIABLE BEAM POWER AND SHAPE
    Publication number: 20170248466
    Abstract: At least one light source is configured to emit at least one beam into a sample volume of an absorbing medium. In addition, at least one detector is positioned to detect at least a portion of the beam emitted by the at least one light source. Further, at least one beam modification element is positioned between the at least one detector and the at least one light source to selectively change at least one of (i) a power intensity of, or (ii) a shape of the beam emitted by the at least one light source as detected by the at least one detector. A control circuit is coupled to the beam modification element. Related apparatus methods, articles of manufacture, systems, and the like are described.
    Type: Application
    Filed: December 12, 2016
    Publication date: August 31, 2017
    Inventors: ALFRED FEITISCH, Xiang Liu, Chih-Husan Chang, Hsu-Hung Huang
  • Spectrometer with variable beam power and shape
    Patent number: 9518866
    Abstract: At least one light source is configured to emit at least one beam into a sample volume of an absorbing medium. In addition, at least one detector is positioned to detect at least a portion of the beam emitted by the at least one light source. Further, at least one beam modification element is positioned between the at least one detector and the at least one light source to selectively change at least one of (i) a power intensity of, or (ii) a shape of the beam emitted by the at least one light source as detected by the at least one detector. A control circuit is coupled to the beam modification element. Related apparatus methods, articles of manufacture, systems, and the like are described.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: December 13, 2016
    Assignee: SpectraSensors, Inc.
    Inventors: Alfred Feitisch, Xiang Liu, Chih-Husan Chang, Hsu-Hung Huang
  • Spectrometer With Variable Beam Power and Shape
    Publication number: 20160054178
    Abstract: At least one light source is configured to emit at least one beam into a sample volume of an absorbing medium. In addition, at least one detector is positioned to detect at least a portion of the beam emitted by the at least one light source. Further, at least one beam modification element is positioned between the at least one detector and the at least one light source to selectively change at least one of (i) a power intensity of, or (ii) a shape of the beam emitted by the at least one light source as detected by the at least one detector. A control circuit is coupled to the beam modification element. Related apparatus methods, articles of manufacture, systems, and the like are described.
    Type: Application
    Filed: August 22, 2014
    Publication date: February 25, 2016
    Inventors: Alfred Feitisch, Xiang Liu, Chih-Husan Chang, Hsu-Hung Huang