Patents by Inventor Kenneth Li

Kenneth Li 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: 8979308
    Abstract: An LED illumination system includes at least one LED element and a recycling reflector having a transmissive aperture through which emitted light passes. The recycling reflector has a curved surface adapted to reflect the impinging light back to the LED element for improved light output through the transmissive aperture.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: March 17, 2015
    Assignee: Wavien, Inc.
    Inventor: Kenneth Li
  • Publication number: 20150042958
    Abstract: An aerial projection display project an image of an object to a remote location for viewing. The display includes a pair of spherical, parabolic, or elliptical reflectors positioned and oriented relative to one another such that, when the object is placed at one or more predetermined locations, an image of such object is transmitted to the first reflector of said pair, reflected by said first reflector to the second reflector, and refocused by the second reflector as an undistorted 3-D image. In a second embodiment, the reflectors are paraboloid reflectors sharing a common axis of revolution. In another embodiment, the reflectors are elliptical reflectors each having a pair of foci. The foci lie along a common axis, and one of said foci is common to both reflectors.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 12, 2015
    Inventor: Kenneth LI
  • Publication number: 20140373348
    Abstract: A method for retrofitting a billboard system illuminated by an arc lamp which includes a reflector with reflector features and an output lens includes the steps of removing the lens from the arc lamp housing, mapping the light pattern output of the arc lamp, and then removing the arc lamp and reflector from the housing. Next, a plurality of LEDs is mounted on an LED circuit board in a pattern so that light output by the LEDs replicates the light pattern of the arc lamp, including the reflected light. The circuit board is then installed inside the housing, and the lens is reattached. Preferably, the LEDs include a central LED cluster of densely packed LEDs to replicate the original output of the arc and a pair of LED groups of less densely packed LEDs, located on either side of the LED cluster, to replicate the output from the reflector.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 25, 2014
    Inventor: Kenneth LI
  • Publication number: 20140328080
    Abstract: An illumination system comprises an arc lamp having a cathode and an anode which emit light from a hot spot. A dual paraboloid retroreflector comprising upper and lower halves intercept light emitted rearwardly from the arc lamp and reflects the intercepted light back towards the hot spot. The retroreflector is spaced from the hot spot at a distance such that light rays emitted from the hot spot which are incident on the upper or lower half are redirected to a corresponding surface of the other half and reflected back to the hot spot. The system may further include a main dual paraboloid reflector for redirecting output light from the arc lamp and retroreflector. Light emitted from the arc lamp is intercepted by a first half paraboloid reflector and collimated to be redirected toward to a corresponding surface of a second half paraboloid reflector member, so as to be reflected in a direction opposite to the arc lamp output.
    Type: Application
    Filed: April 29, 2014
    Publication date: November 6, 2014
    Applicant: WAVIEN, INC.
    Inventor: Kenneth LI
  • Patent number: 8858037
    Abstract: An LED illumination system includes a plurality of LED modules and a plurality of corresponding collimating lenses to provide increased brightness. Each LED module has at least one LED chip having a light emitting area that emits light and a recycling reflector. The reflector is positioned to reflect the light from the light emitting area back to the LED chip and has a transmissive aperture through which the emitted light exits. The collimating lenses are arranged to receive and collimate the light exiting from the LED modules.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: October 14, 2014
    Assignee: Wavien, Inc.
    Inventor: Kenneth Li
  • Publication number: 20140252958
    Abstract: A network comprises a plurality of modules, wherein each module comprises a communications circuit with an antenna for sending information signals to and receiving control signals from a remote base over a wifi connection. Each module includes either a lighting element or a security camera for providing images. Each module may further include sensors to provide information to the base concerning operating conditions. Preferably, each module is programmed to receive signals from other modules and to relay such signals to the remote base, and similarly route control signals from the remote base intended for a different module to the intended module. In one embodiment, the network is a lighting network in which each module includes a light source controlled by the remote base or by a control terminal connected to the remote base.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 11, 2014
    Applicants: Spot On Networks, LLC, Wavien, Inc.
    Inventors: Bryan SUBOTNICK, Richard SHERWIN, Kenneth LI
  • Publication number: 20140232252
    Abstract: An electrical device, preferably a light bulb having an electrical base, comprises a container having a sealed interior, an electrical component contained within the sealed interior; a liquid filling the sealed interior; and a pressure relief member. The pressure relief member has an interior tubular passage. The tubular passage has an inlet which is in fluid communication with the liquid. The tubular passage is filled with liquid from the inlet partially toward an outer end of the passage. The remainder of the passage is filled with gas. The pressure relief member provides relief from increases of pressure caused by heating the liquid. Preferably, a heat sink is provided for the electrical component and contacts the liquid coolant. The pressure relief member may be located either in the sealed interior or outside of the container.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 21, 2014
    Inventor: Kenneth LI
  • Patent number: 8789973
    Abstract: A liquid cooled LED lighting device includes a sealed housing containing an LED element that emits light. Cooling liquid is contained in the housing to disperse heat generated by the LED element. An enclosure containing compressible material is preferably immovably positioned within the housing and outside of the optical path of the emitted light. The enclosure containing the compressible material compresses in response to expansion of the cooling liquid as it absorbs heat from the LED element. Advantageously, the cooling liquid and the enclosure containing the compressible material act to more efficiently cool the LED element, thereby providing higher light output and increased lifetime of the LED element.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: July 29, 2014
    Assignee: Wavien, Inc.
    Inventor: Kenneth Li
  • Publication number: 20140078730
    Abstract: A lamp system comprises a light source and a parabolic reflecting collar positioned around the light source and having an aperture through which a center axis extends. The aperture permits light rays emitted by the light source at low angles relative to the axis to be emitted from the parabolic reflecting collar, while light rays emitted by said light source at higher angles are reflected by the collar for recycling. The parabolic reflecting collar is positioned such that higher angle light rays are reflected twice, off opposing wall reflecting portions, back to their point of origin. Preferably the light source is an array of multiple LEDs having different colors and sizes.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 20, 2014
    Applicant: WAVIEN, INC.
    Inventor: Kenneth LI
  • Publication number: 20140022512
    Abstract: A phosphor-based lamp includes a phosphor material and an excitation source, which may be a laser or an LED, or both. Preferably, the lamp includes a recycling collar to reflect and recycle high angle light to increase brightness. Preferably, when the excitation source is a laser, a beam splitter redirects the laser beam to direct the laser beam through the recycling collar aperture onto the phosphor material. Light emitted by the phosphor material which exits the aperture passes through the beam splitter as the output of the lamp. Alternatively, lenses are used to redirect the laser beam around the recycling collar towards the phosphor material. Preferably, a plurality of excitation lasers are disposed around the recycling collar and aimed either to direct their outputs onto the phosphor material or toward an opposing wall, where the outputs are reflected onto the phosphor material. Such lamp may be used as part of a projection system. In one embodiment, the phosphor material is contained on the color wheel.
    Type: Application
    Filed: June 19, 2013
    Publication date: January 23, 2014
    Applicant: WAVIEN, INC.
    Inventors: Kenneth LI, Seiji Inatsugu
  • Patent number: 8602567
    Abstract: Multi-color light sources are mixed in a recycling housing to achieve high light output. Light from each color light source is multiplexed and a portion of the mixed light passes through an output aperture in the light pipe and a portion light is recycled back, for example, by a shaped reflective surface and/or a reflective coating adjacent the aperture. In one embodiment, the light is directed back from the output side of the housing to an input light source having the same color. In another embodiment, the light is directed back from the output side of the housing to a coating designed to reflect that color. The reflected light is then reflected back toward the output aperture and a portion of that reflected light is again reflected toward the input and impacts the original source for that color light. In this way, light theoretically recycles infinitely.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: December 10, 2013
    Assignee: Wavien, Inc.
    Inventors: George Ouyang, Kenneth Li
  • Publication number: 20130176292
    Abstract: An ultra-bright back-light LCD video display comprises a housing containing a light source such as one or more LEDs. A collimating lens receives substantially all of the light generated by said light source, and directs such light through a polarizer. The polarizer output is sent to an LCD panel having an array of pixels dynamically controlled to permit light to pass through predetermined pixels. The LCD panel output passes through a diffuser forming a video image screen.
    Type: Application
    Filed: January 9, 2013
    Publication date: July 11, 2013
    Inventor: Kenneth LI
  • Patent number: 8388190
    Abstract: An illumination system for increasing the brightness of a light source comprises an optical recycling device coupled to the light source, preferably light emitting diode (LED), for spatially and/or angularly recycling light. The optical recycling device spatially recycles a portion of rays of light emitted by the LED back to the light source using a reflector or mirror and/or angularly recycles high angle rays of light and transmits small angle rays of light, thereby increasing the brightness of the light source's output.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: March 5, 2013
    Assignee: Wavien, Inc.
    Inventors: Kenneth Li, Seiji Inatsuju
  • Patent number: 8317331
    Abstract: A recycling system and method for increasing the brightness of light output using at least one recycling light pipe with at least one light source. The output end of the recycling light pipe reflects a first portion of the light back to the light source, a second portion the light to the input end of the recycling light pipe, and transmits the remaining portion of the light as output. The recycling system is incorporated into a projector to provide color projected image with increased brightness. The light source can be white LEDs, color LEDs, and dual paraboloid reflector (DPR) lamp.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: November 27, 2012
    Assignee: Wavien, Inc.
    Inventor: Kenneth Li
  • Publication number: 20120212929
    Abstract: An LED illumination system includes a plurality of LED modules and a plurality of corresponding collimating lenses to provide increased brightness. Each LED module has at least one LED chip having a light emitting area that emits light and a recycling reflector. The reflector is positioned to reflect the light from the light emitting area back to the LED chip and has a transmissive aperture through which the emitted light exits. The collimating lenses are arranged to receive and collimate the light exiting from the LED modules.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 23, 2012
    Inventor: Kenneth LI
  • Publication number: 20110273862
    Abstract: An illumination system for increasing the brightness of a light source comprises an optical recycling device coupled to the light source, preferably light emitting diode (LED), for spatially and/or angularly recycling light. The optical recycling device spatially recycles a portion of rays of light emitted by the LED back to the light source using a reflector or mirror and/or angularly recycles high angle rays of light and transmits small angle rays of light, thereby increasing the brightness of the light source's output.
    Type: Application
    Filed: June 1, 2011
    Publication date: November 10, 2011
    Inventors: Kenneth LI, Seiji Inatsuju
  • Publication number: 20110261563
    Abstract: A liquid cooled LED lighting device includes a sealed housing containing an LED element that emits light. Cooling liquid is contained in the housing to disperse heat generated by the LED element. An enclosure containing compressible material is preferably immovably positioned within the housing and outside of the optical path of the emitted light. The enclosure containing the compressible material compresses in response to expansion of the cooling liquid as it absorbs heat from the LED element. Advantageously, the cooling liquid and the enclosure containing the compressible material act to more efficiently cool the LED element, thereby providing higher light output and increased lifetime of the LED element.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 27, 2011
    Inventor: Kenneth LI
  • Publication number: 20110242836
    Abstract: An LED illumination system includes at least one LED element and a recycling reflector having a transmissive aperture through which emitted light passes. The recycling reflector has a curved surface adapted to reflect the impinging light back to the LED element for improved light output through the transmissive aperture.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 6, 2011
    Inventor: Kenneth Li
  • Publication number: 20110164430
    Abstract: The invention provides for an illuminator device. The device includes a light emitting means, such as an LED with a white phosphor, a waveguide or light directing and reflecting means which has an output means for release of light, and a lens system. The device may be formatted as a flashlight device. Preferably, the LED emits blue light, and the waveguide is at least partially coated to enhance reflectance.
    Type: Application
    Filed: January 6, 2011
    Publication date: July 7, 2011
    Inventor: Kenneth Li
  • Publication number: 20110075105
    Abstract: Multi-color light sources are mixed in a recycling housing to achieve high light output. In one embodiment, the light from each color light source, such as from red, green and blue LEDs, is multiplexed together and a portion of the mixed light passes through an output aperture in the light pipe. A portion of each colored light is recycled back, for example, by a shaped reflective surface and/or a reflective coating adjacent the aperture. The shape of the reflective surface is such as to direct each color of light back to a specific location to maximize the ultimate output light. In one embodiment, the light is directed back from the output side of the housing to an input light source having the same color. In another embodiment, the light is directed back from the output side of the housing to a coating designed to reflect that color light.
    Type: Application
    Filed: September 27, 2010
    Publication date: March 31, 2011
    Applicant: Wavien, Inc.
    Inventors: George Ouyang, Kenneth Li