Patents by Inventor Hanxiang BAI

Hanxiang BAI 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).

  • 2-D straight-scan on imaging surface with a raster polygon
    Patent number: 9676206
    Abstract: A 2-D scanning system uses a fast-rotating raster-polygon as a single scanning component to produce straight scan lines over a 2-D image surface. An approach angle of incident light beams to the raster-polygon is selected to minimize pin-cushion distortion of scan lines introduced by polygon scanning on the image surface, and a tilt angle of the rotational axis of the raster-polygon is selected to position said polygon-scanning distortion symmetrically on the image surface. In addition, scan optics are configured to generate a predetermined amount of barrel distortion of scan lines on the image surface to compensate for pin-cushion distortion introduced by polygon scanning.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: June 13, 2017
    Assignee: PRYSM, INC.
    Inventors: Hanxiang Bai, Roger A. Hajjar
  • 2-D STRAIGHT-SCAN ON IMAGING SURFACE WITH A RASTER POLYGON
    Publication number: 20160355024
    Abstract: A 2-D scanning system uses a fast-rotating raster-polygon as a single scanning component to produce straight scan lines over a 2-D image surface. An approach angle of incident light beams to the raster-polygon is selected to minimize pin-cushion distortion of scan lines introduced by polygon scanning on the image surface, and a tilt angle of the rotational axis of the raster-polygon is selected to position said polygon-scanning distortion symmetrically on the image surface. In addition, scan optics are configured to generate a predetermined amount of barrel distortion of scan lines on the image surface to compensate for pin-cushion distortion introduced by polygon scanning.
    Type: Application
    Filed: August 18, 2016
    Publication date: December 8, 2016
    Inventors: Hanxiang BAI, Roger A. HAJJAR
  • 2-D straight-scan on imaging surface with a raster polygon
    Patent number: 9440451
    Abstract: A 2-D scanning system uses a fast-rotating raster-polygon as a single scanning component to produce straight scan lines over a 2-D image surface. An approach angle of incident light beams to the raster-polygon is selected to minimize pin-cushion distortion of scan lines introduced by polygon scanning on the image surface, and a tilt angle of the rotational axis of the raster-polygon is selected to position said polygon-scanning distortion symmetrically on the image surface. In addition, scan optics are configured to generate a predetermined amount of barrel distortion of scan lines on the image surface to compensate for pin-cushion distortion introduced by polygon scanning.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: September 13, 2016
    Assignee: PRYSM, Inc.
    Inventors: Hanxiang Bai, Roger A. Hajjar
  • 2-D STRAIGHT-SCAN ON IMAGING SURFACE WITH A RASTER POLYGON
    Publication number: 20150352859
    Abstract: A 2-D scanning system uses a fast-rotating raster-polygon as a single scanning component to produce straight scan lines over a 2-D image surface. An approach angle of incident light beams to the raster-polygon is selected to minimize pin-cushion distortion of scan lines introduced by polygon scanning on the image surface, and a tilt angle of the rotational axis of the raster-polygon is selected to position said polygon-scanning distortion symmetrically on the image surface. In addition, scan optics are configured to generate a predetermined amount of barrel distortion of scan lines on the image surface to compensate for pin-cushion distortion introduced by polygon scanning.
    Type: Application
    Filed: May 26, 2015
    Publication date: December 10, 2015
    Inventors: Hanxiang Bai, Roger A. Hajjar
  • 2-D straight-scan on imaging surface with a raster polygon
    Patent number: 9041762
    Abstract: A 2-D scanning system uses a fast-rotating raster-polygon as a single scanning component to produce straight scan lines over a 2-D image surface. An approach angle of incident light beams to the raster-polygon is selected to minimize pin-cushion distortion of scan lines introduced by polygon scanning on the image surface, and a tilt angle of the rotational axis of the raster-polygon is selected to position said polygon-scanning distortion symmetrically on the image surface. In addition, scan optics are configured to generate a predetermined amount of barrel distortion of scan lines on the image surface to compensate for pin-cushion distortion introduced by polygon scanning.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: May 26, 2015
    Assignee: PRYSM, INC.
    Inventors: Hanxiang Bai, Roger A. Hajjar
  • 2-D STRAIGHT-SCAN ON IMAGING SURFACE WITH A RASTER POLYGON
    Publication number: 20130076852
    Abstract: A 2-D scanning system uses a fast-rotating raster-polygon as a single scanning component to produce straight scan lines over a 2-D image surface. An approach angle of incident light beams to the raster-polygon is selected to minimize pin-cushion distortion of scan lines introduced by polygon scanning on the image surface, and a tilt angle of the rotational axis of the raster-polygon is selected to position said polygon-scanning distortion symmetrically on the image surface. In addition, scan optics are configured to generate a predetermined amount of barrel distortion of scan lines on the image surface to compensate for pin-cushion distortion introduced by polygon scanning.
    Type: Application
    Filed: September 26, 2011
    Publication date: March 28, 2013
    Inventors: Hanxiang BAI, Roger A. HAJJAR