Patents Assigned to RAB Lighting, Inc.
  • Dimming for constant current LED driver circuit
    Patent number: 8884541
    Abstract: An illustrative LED driver circuit includes dimming control of the LED lamp. The circuit uses flyback converter topology, a power factor correction (PFC) primary side controller, a secondary side controller that includes current control and voltage control regulation, and an dimming control circuit. The dimming control circuit includes a selectable dimming control signal added together with a sensed current output signal to provide a control signal supplied to the secondary controller for output current control.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: November 11, 2014
    Assignee: RAB Lighting Inc.
    Inventor: Mingliang Wu
  • Recessed Light Fixture with Two-Axis Rotational Arm
    Publication number: 20140307445
    Abstract: An illustrative embodiment of a light fixture, which may be a type of recessed downlight called a wallwasher, includes a light housing and has a power supply, such as a driver and/or electrical junction box, mounted on or forming an arm. The arm is rotationally coupled to the light housing, with the arm having two axes of rotation relative to the light housing. That is, the arm freely rotates laterally about a first axis, and freely rotates in elevation about a second axis.
    Type: Application
    Filed: April 7, 2014
    Publication date: October 16, 2014
    Applicant: RAB Lighting Inc.
    Inventor: Doug Highbridge
  • Compact concentric array reflector for LED light fixture
    Patent number: 8858036
    Abstract: An illustrative light fixture providing a desired spot light pattern diameter at a given distance includes a planar light emitter providing a light source and forming a first plane, and concentric conical frustum reflectors, the first reflector having a proximate end coplanar with the first plane and the second reflector having a proximate end distal of the first plane.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: October 14, 2014
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, Jiang Hu, Dan Wang-Munson
  • Photocell controlled LED driver circuit
    Patent number: 8847499
    Abstract: An illustrative LED driver circuit includes an automatic on and off control function using a light sensing circuit having a light sensing element reacting to ambient light. The circuit uses flyback converter topology and a power factor correction (PFC) controller. The light sensing function is provided by coupling the light sensing circuit to a monitoring/disable function of the PFC controller, thus providing automatic on and off control of the LED driver circuit by using a light sensing element such as a photocell.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: September 30, 2014
    Assignee: RAB Lighting Inc.
    Inventor: Mingliang Wu
  • DIMMING FOR CONSTANT CURRENT LED DRIVER CIRCUIT
    Publication number: 20140125252
    Abstract: An illustrative LED driver circuit includes dimming control of the LED lamp. The circuit uses flyback converter topology, a power factor correction (PFC) primary side controller, a secondary side controller that includes current control and voltage control regulation, and an dimming control circuit. The dimming control circuit includes a selectable dimming control signal added together with a sensed current output signal to provide a control signal supplied to the secondary controller for output current control.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 8, 2014
    Applicant: RAB Lighting Inc.
    Inventor: Mingliang Wu
  • LED housing with heat transfer sink
    Patent number: 8540402
    Abstract: An illustrative thermally managed light includes a light source, for example an LED array, a heatsink having a tapered outer surface, the light source thermally coupled with the heatsink, a housing having a tapered interior surface portion, and a securing device coupling the heatsink and the rear end of the housing. The securing device, for example a tensioning device, adapted to retain the outer surface of the heatsink in thermal contact with the tapered interior surface of the housing, thus transferring and dissipating the heat from the light source into the environment around the housing.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: September 24, 2013
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, Jun Xiang
  • LIGHT FIXTURE WITH AIRFLOW PASSAGE SEPARATING DRIVER AND EMITTER
    Publication number: 20130242574
    Abstract: An illustrative light fixture provides an emitter housing and a driver housing in a single fixture with an airflow channel defined between the emitter and driver housings. The airflow channel minimizes thermal conduction between the emitter and driver housings, and maximizes thermal convective cooling for at least one of the emitter housing and driver housing. The emitter housing includes vertical fins extending into the airflow chamber. The left and right sides of the emitter and driver housings define top and bottom edges that are respectively coplanar with the top and bottom edges of the vertical fins.
    Type: Application
    Filed: September 12, 2012
    Publication date: September 19, 2013
    Applicant: RAB LIGHTING INC.
    Inventors: Vincenzo Guercio, Wengang Gao, Jiang Hu
  • COMPACT CONCENTRIC ARRAY REFLECTOR FOR LED LIGHT FIXTURE
    Publication number: 20130194808
    Abstract: An illustrative light fixture providing a desired spot light pattern diameter at a given distance includes a planar light emitter providing a light source and forming a first plane, and concentric conical frustum reflectors, the first reflector having a proximate end coplanar with the first plane and the second reflector having a proximate end distal of the first plane.
    Type: Application
    Filed: January 30, 2013
    Publication date: August 1, 2013
    Applicant: RAB LIGHTING INC.
    Inventor: RAB LIGHTING INC.
  • LED DRIVER PROTECTION CIRCUIT
    Publication number: 20130141004
    Abstract: An illustrative LED driver circuit is based on a transition-mode power factor correction integrated circuit using flyback topology. The LED driver circuit features a universal input circuit having various fault and surge protections, output circuit open load and short circuit protection, and main transformer over temperature protection.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 6, 2013
    Applicant: RAB LIGHTING INC.
    Inventor: Rab Lighting Inc.
  • LIGHT FIXTURE WITH PERIPHERAL COOLING CHANNELS
    Publication number: 20130088882
    Abstract: An illustrative light fixture includes an emitter housing and airflow cooling channels. The airflow cooling channels are defined in the space between opposite edges of the emitter housing and a rim around the periphery of at least the opposite edges of the emitter housing. The airflow channels are further defined by fins spanning between the rim and opposite edges and spanning across a side of the housing opposite the illumination side.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 11, 2013
    Applicant: RAB LIGHTING INC.
    Inventor: RAB Lighting Inc.
  • LIGHT FIXTURE WITH INTERCHANGEABLE HEATSINK TRAYS AND REFLECTORS
    Publication number: 20130088865
    Abstract: An illustrative lighting system provides a single light housing and an associated lens cover that together interchangeably receive one of a selection of heat sink trays and one of a selection of light reflectors. Each of the selection of heat sink trays includes a different number and/or orientation of light emitter packages. Each the selection of light reflectors includes openings and surfaces matching the number and orientation of light emitter packages for one of the selection of heat sink trays.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 11, 2013
    Applicant: RAB LIGHTING INC.
    Inventor: RAB Lighting Inc.
  • Adjustable reflector luminaire
    Patent number: 8388192
    Abstract: The disclosure provides a luminaire having an adjustable light reflector affording a selection of flood pattern lighting.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: March 5, 2013
    Assignee: RAB Lighting Inc.
    Inventor: Vincenzo Guercio
  • LED area light fixture
    Patent number: D679856
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: April 9, 2013
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, Wengang Gao
  • Mini wallpack LED light fixture
    Patent number: D681864
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: May 7, 2013
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, Jiang Hu
  • LED entry light fixure
    Patent number: D691319
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: October 8, 2013
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, Wengang Gao
  • Slim wallpack light fixture
    Patent number: D691320
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: October 8, 2013
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, James Lau
  • Battery housing for emergency LED light fixture
    Patent number: D695954
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: December 17, 2013
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, James Lau
  • Outdoor LED light fixture
    Patent number: D713091
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 9, 2014
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, James Lau, Dan Wang-Munson
  • Explosion proof LED light fixture
    Patent number: D690450
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: September 24, 2013
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, James Lau
  • High bay LED light fixture
    Patent number: D690453
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: September 24, 2013
    Assignee: RAB Lighting Inc.
    Inventors: Vincenzo Guercio, Jiang Hu