Patents by Inventor Ci Guang Peng

Ci Guang Peng 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).

  • Publication number: 20080094833
    Abstract: A back-light source comprises a plurality of light-emitting devices, each light-emitting device having a light-emitting package and a lens surface. In at least some of the light emitting devices, the radius of curvature in one direction of the lens surface is different from the radius of curvature in another direction such that one of the radii of curvature of the lens is greater than the other radius of curvature. In particular, one radius of curvature is equal to or smaller than half the length of the device. The other radius of curvature is equal to or greater than half the length of the device. As such, the lens has different focal lengths in different directions. The light-emitting package can have a plurality of light-emitting sources of a single color or of different colors.
    Type: Application
    Filed: October 19, 2006
    Publication date: April 24, 2008
    Inventors: Chih-Kuang Chen, Ci-Guang Peng
  • Publication number: 20080007938
    Abstract: A light-emitting unit includes a bounding frame, a first light-emitting element, a second light-emitting element, and a first reflecting sheet. The first light-emitting element and the second light-emitting element are disposed in the bounding frame, and emit light in different directions. The first reflecting sheet is disposed on the bounding frame, and has a reflecting surface on one side away from the bounding frame.
    Type: Application
    Filed: August 8, 2006
    Publication date: January 10, 2008
    Applicant: AU OPTRONICS CORP.
    Inventors: Shen-Hong Chou, Hsin-Wu Lin, Chih-Kuang Chen, Ci-Guang Peng
  • Publication number: 20070295972
    Abstract: A light emitting diode module is disclosed. The light emitting diode module includes a substrate, a plurality of light emitting diodes, and a plurality of lenses. The light emitting diodes are disposed on the substrate, and the lenses are disposed on the substrate and covering the light emitting diodes, in which each of the lenses includes a curved surface corresponding to each of the light emitting diodes.
    Type: Application
    Filed: September 27, 2006
    Publication date: December 27, 2007
    Inventors: Shau-Yu Tsai, Chih-Lin Wang, Jyh-Haur Huang, Ci-Guang Peng
  • Patent number: 7237900
    Abstract: A polarization conversion system suited for LCD or LCoS-based projection applications is disclosed. The present invention polarization conversion system encompasses a light pipe with a rectangular light tunnel therein defined by four side reflection mirrors. A front reflection with an aperture thereon is mounted on an entrance face of the light pipe. A first polarization beam splitter is mounted on an exit face of the light pipe. A retardation plate, which is perpendicular to the exit face, is situated atop the first polarization beam splitter. A reflection mirror is situated atop the retardation plate. A second polarization beam splitter is mounted under the first polarization beam splitter and is opposite to the retardation plate.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: July 3, 2007
    Assignee: United Microdisplay Optronics Corp.
    Inventors: Ci Guang Peng, Hsin Wen Tsai, Po Liang Chiang, Yi Wei Liu, Hsueh-Chen Chang
  • Publication number: 20060146289
    Abstract: An optical system utilizing a unique polarizer separating plate to replace conventional PBS prism is disclosed. The optical system of this invention, which may be applied to projection display apparatuses such as rear projection type televisions, includes an illumination system for generating a homogeneous light beam, a polarizer separating plate comprising a polarization separation surface that splits the light beam into a first polarized light beam with a first polarization status and a second polarized light beam with a second polarization status, wherein the first polarized light beam propagates through a first aberration compensation lens to a first panel, and a second polarized light beam propagates through a second aberration compensation lens to a second panel. According to one embodiment, the polarizer separating plate includes two sheets of glass substrates having the same thickness and the polarization separation surface is sandwiched by the two sheets of glass substrates.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 6, 2006
    Inventors: Po Liang Chiang, Yi Wei Liu, Hsin Wen Tsai, Hsueh-Chen Chang, Ci Guang Peng
  • Publication number: 20060146288
    Abstract: A polarization conversion system suited for LCD or LCoS-based projection applications is disclosed. The present invention polarization conversion system encompasses a light pipe with a rectangular light tunnel therein defined by four side reflection mirrors. A front reflection with an aperture thereon is mounted on an entrance face of the light pipe. A first polarization beam splitter is mounted on an exit face of the light pipe. A retardation plate, which is perpendicular to the exit face, is situated atop the first polarization beam splitter. A reflection mirror is situated atop the retardation plate. A second polarization beam splitter is mounted under the first polarization beam splitter and is opposite to the retardation plate.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 6, 2006
    Inventors: Ci Guang Peng, Hsin Wen Tsai, Po Liang Chiang, Yi Wei Liu, Hsueh-Chen Chang
  • Publication number: 20060045456
    Abstract: This invention provides a polarization conversion light pipe device suited for LCD- or LCoS-based projection applications. The polarization conversion light pipe device encompasses a light tunnel defined by four side reflection mirrors with a rectangular cross section. The light tunnel has a light entrance face at one end and a light exit face at the other end. A front reflection mirror having an aperture thereon is mounted on the light entrance face. A retardation plate for rotating the direction of an electric field of a polarized light beam is situated in the light tunnel. A polarization beam splitter module is situated between the exit face of the light tunnel and the retardation plate. The polarization beam splitter module has a reflective polarization beam splitting surface that is substantially 45 degree-inclined with respect to one of the side reflection mirrors.
    Type: Application
    Filed: August 30, 2004
    Publication date: March 2, 2006
    Inventors: Po Liang Chiang, Yi Wei Liu, Hsin Wen Tsai, Hsueh Chen Chang, Ci Guang Peng
  • Publication number: 20060023167
    Abstract: An illumination system suited for projection display applications is disclosed. The illumination system according to this invention includes a red light-emitting diode (R-LED) light source array, a green light-emitting diode (G-LED) light source array, and a blue light-emitting diode (B-LED) light source array. In one preferred embodiment, the R/G/B-LED light source arrays are coupled to different sides of an x-cube component. Light beams emanated from respective light source arrays are combined by the x-cube component, thereby generating a white-light source for display purposes.
    Type: Application
    Filed: January 21, 2005
    Publication date: February 2, 2006
    Inventors: Po Liang Chiang, Hsueh-Chen Chang, Ci Guang Peng, Yi Wei Liu, Hsin Wen Tsai
  • Publication number: 20050275761
    Abstract: A rear projection type television having an improved projection lens system is provided. The projection lens system includes a projection lens with a central light axis at its center that is offset from a reference horizontal line. The offset projection lens projects a central light beam through two reflection mirrors that are not parallel with each other to an image projection surface of a front screen. The image projection surface of a front screen is normal to the horizontal line.
    Type: Application
    Filed: June 10, 2004
    Publication date: December 15, 2005
    Inventors: Yi Wei Liu, Po Liang Chiang, Hsueh Chen Chang, Hsin Wen Tsai, Ci Guang Peng