Patents by Inventor Jiang-tao Dang

Jiang-tao Dang 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: 9200998
    Abstract: Methods and systems are provided to avoid the rotation action with the polarizer and the analyzer in complex ellipsometric measurement and repeated processes. In particular, methods and systems are provided which polarize the incident light in a fixed azimuthal angle then illuminate the polarized light onto the target surface, analyze the surface polarized characteristics light in a fixed azimuthal angle, and obtain the light intensity and phase information corresponding to the target surface. Then, based on the relationship between the characteristic information detected by electromagnetic wave and the light intensity information, the disclosed methods and systems obtain the characteristic information of the target surface.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: December 1, 2015
    Assignee: RAINTREE SCIENTIFIC INSTRUMENTS (SHANGHAI) CORPORATION
    Inventors: Jiang-tao Dang, Ningning Pan, Haijun Gao
  • Publication number: 20120038920
    Abstract: Methods and systems are provided to avoid the rotation action with the polarizer and the analyzer in complex ellipsometric measurement and repeated processes. In particular, methods and systems are provided which polarize the incident light in a fixed azimuthal angle then illuminate the polarized light onto the target surface, analyze the surface polarized characteristics light in a fixed azimuthal angle, and obtain the light intensity and phase information corresponding to the target surface. Then, based on the relationship between the characteristic information detected by electromagnetic wave and the light intensity information, the disclosed methods and systems obtain the characteristic information of the target surface.
    Type: Application
    Filed: September 3, 2009
    Publication date: February 16, 2012
    Applicant: Raintree Scientific Instruments (Shanghai) Corporation
    Inventors: Jiang-tao DANG, Ningning PAN, Haijun GAO
  • Publication number: 20110176133
    Abstract: To avoid the rotation action with the polarizer and the analyzer in ellipsometric measurement, complex measurement and repeated process, this invention proposes to polarize the incident light in a fixed azimuthal angle then illuminate the polarized light onto the target surface, analyze the surface polarized characteristics light in a fixed azimuthal angle, and obtain the light intensity and phase information corresponding to the target surface, then based on the relationship between the characteristics information detected by electromagnetic wave and the light intensity information, to obtain the characteristics information of the target surface.
    Type: Application
    Filed: September 3, 2009
    Publication date: July 21, 2011
    Applicant: RAINTREE SCIENTIFIC INSTRUMENTS (SHANGHAI) CORPORATION
    Inventors: Jiang-tao Dang, Ningning Pan, Haijun Gao