Patents by Inventor ZhaoHuan Liu

ZhaoHuan Liu 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: 7905639
    Abstract: A side-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a distal side of a printed circuit board, which also includes the circuitry that drives the one or more LEDs. The circuit board and a thermal pad are screwed/riveted to a heat sink, then the heat sink is mounted to a lateral face of a housing. The LEDs emit diverging light laterally inside the housing. One face of the housing is a faceted parabolic reflector, which receives the diverging light from the LEDs and reflects a collimated beam longitudinally to the front of the housing, where it passes through a clear cover and exits the lamp. The facets on the parabolic reflector angularly deviate portions of the reflected beam, so that the reflected light is collimated, and is angularly broader than a single collimated beam.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: March 15, 2011
    Assignee: Osram Sylvania Inc.
    Inventors: Hong Luo, ZhaoHuan Liu
  • Patent number: 7762700
    Abstract: A rear-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a printed circuit board that mechanically holds them at the focus of a faceted, parabolic reflector. Light from the LEDs diverges transversely and horizontally, and is collimated by the reflector, and the reflected collimated light is directed in a generally longitudinal direction out of the rear combination lamp, toward the viewer. The LED module itself is generally longitudinally oriented, and is insertable longitudinally into the interior of the reflector from a hole at the vertex of the reflector. The printed circuit board, an optional thermal pad adjacent to the printed circuit board, and a thermally conductive layer adjacent to the optional thermal pad are all generally planar layers, are all generally parallel to each other, and may optionally all have the same footprint. Together, the printed circuit board, the thermal pad and the thermally conductive layer may all form a generally planar ledge.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: July 27, 2010
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Hong Luo, ZhaoHuan Liu
  • Patent number: 7762701
    Abstract: A rear-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a printed circuit board that electrically powers and mechanically holds them outside a faceted, parabolic reflector. Light emitted from the LEDs enters a light propagation region, formed between the reflective adjacent faces of two nested cylinders. The cylinders extend from the LEDs, outside the reflector, longitudinally through a hole at the vertex of the reflector, to the focus of the reflector. In some applications, the light propagation region may act as a beam homogenizer, so that light exiting the light propagation region may have roughly uniform intensity. Light from the light propagation region strikes an outwardly-flared reflector that directs it largely transversely onto the parabolic reflector. The parabolic reflector collimates the light and directs it longitudinally, through a transparent cover and out of the lamp.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: July 27, 2010
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Hong Luo, ZhaoHuan Liu
  • Publication number: 20100182788
    Abstract: A robust LED lamp may be assembly by forming a heat sinking sandwich with two metal heat sinks positioned around the circuit board and pinned together a heat conductive element. The assembly is positioned by pressing it into a base providing electrical connections. The robust assembly is rapidly assembled, thermally effective in draining or spreading heat from the circuit board and is readily adaptable to a variety of applications lighting. The heat sink may be decorated, colored or otherwise esthetically enhanced for consumer appreciation.
    Type: Application
    Filed: January 19, 2009
    Publication date: July 22, 2010
    Applicant: OSRAM SYLVANIA INC.
    Inventors: HONG LUO, ZHAOHUAN LIU
  • Publication number: 20090296417
    Abstract: A rear-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a printed circuit board that electrically powers and mechanically holds them outside a faceted, parabolic reflector. Light emitted from the LEDs enters a light propagation region, formed between the reflective adjacent faces of two nested cylinders. The cylinders extend from the LEDs, outside the reflector, longitudinally through a hole at the vertex of the reflector, to the focus of the reflector. In some applications, the light propagation region may act as a beam homogenizer, so that light exiting the light propagation region may have roughly uniform intensity. Light from the light propagation region strikes an outwardly-flared reflector that directs it largely transversely onto the parabolic reflector. The parabolic reflector collimates the light and directs it longitudinally, through a transparent cover and out of the lamp.
    Type: Application
    Filed: October 28, 2008
    Publication date: December 3, 2009
    Applicant: OSRAM SYLVANIA, INC.
    Inventors: Hong Luo, ZhaoHuan Liu
  • Publication number: 20090296418
    Abstract: A side-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a distal side of a printed circuit board, which also includes the circuitry that drives the one or more LEDs. The circuit board and a thermal pad are screwed/riveted to a heat sink, then the heat sink is mounted to a lateral face of a housing. The LEDs emit diverging light laterally inside the housing. One face of the housing is a faceted parabolic reflector, which receives the diverging light from the LEDs and reflects a collimated beam longitudinally to the front of the housing, where it passes through a clear cover and exits the lamp. The facets on the parabolic reflector angularly deviate portions of the reflected beam, so that the reflected light is collimated, and is angularly broader than a single collimated beam.
    Type: Application
    Filed: October 28, 2008
    Publication date: December 3, 2009
    Applicant: OSRAM SYLVANIA, INC.
    Inventors: Hong Luo, ZhaoHuan Liu
  • Publication number: 20090296416
    Abstract: A rear-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a printed circuit board that mechanically holds them at the focus of a faceted, parabolic reflector. Light from the LEDs diverges transversely and horizontally, and is collimated by the reflector, and the reflected collimated light is directed in a generally longitudinal direction out of the rear combination lamp, toward the viewer. The LED module itself is generally longitudinally oriented, and is insertable longitudinally into the interior of the reflector from a hole at the vertex of the reflector. The printed circuit board, an optional thermal pad adjacent to the printed circuit board, and a thermally conductive layer adjacent to the optional thermal pad are all generally planar layers, are all generally parallel to each other, and may optionally all have the same footprint. Together, the printed circuit board, the thermal pad and the thermally conductive layer may all form a generally planar ledge.
    Type: Application
    Filed: October 28, 2008
    Publication date: December 3, 2009
    Applicant: OSRAM SYLVANIA, INC.
    Inventors: Hong Luo, ZhaoHuan Liu