Patents Assigned to Denovo Lighting, LLC
  • Patent number: 11918714
    Abstract: The present invention is directed to a device consisting of at least one occupancy sensor and relay switch for providing power to UVC germicidal light sources when the at least one sensor does detect the absence of a person or object in the room or space, and automatically turns off the UVC germicidal light sources when the at least one sensor does detect the presence of a person or object entering or already in a room or space. Additionally, the same device using the at least one sensor and relay switch can include general lighting white color light sources that energize automatically when the at least one sensor does detect the presence of a person or object in a room or space, and automatically turns off the general lighting white color light sources when the at least one sensor does detect the absence of a person or object in the room or space.
    Type: Grant
    Filed: July 3, 2020
    Date of Patent: March 5, 2024
    Assignee: Denovo Lighting, LLC
    Inventors: Georgiana Hsu-Luk, Danielle Luk
  • Patent number: 11614407
    Abstract: The present invention is directed to a device consisting of a portable and multi-band UV light device that uses a combination of UVA, UVB, and UVC wavelength band of UV emitters. For detection, UV emitters are energized to a particulate collector that will fluoresce and glow when there is the presence of a wide range of different harmful aerosol droplet particles in the air that may be collected. This instant and positive visual detection with an available audio alarm alert indicates the presence of harmful aerosol droplet particles in the vicinity of this Instant Particulate Detector or IPD device, allowing the user to take immediate and corrective action. The user can also subsequently select disinfection utilizing UVC wavelength light to sterilize the particulate collector and Instant Particulate Detector or IPD device.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: March 28, 2023
    Assignee: Denovo Lighting, LLC
    Inventors: John F Luk, Georgiana Hsu-Luk, Danielle Luk
  • Publication number: 20200309703
    Abstract: The present invention is directed to a device consisting of a portable and multi-band UV light device that uses a combination of UVA, UVB, and UVC wavelength band of UV emitters. For detection, UV emitters are energized to a particulate collector that will fluoresce and glow when there is the presence of a wide range of different harmful aerosol droplet particles in the air that may be collected. This instant and positive visual detection with an available audio alarm alert indicates the presence of harmful aerosol droplet particles in the vicinity of this Instant Particulate Detector or IPD device, allowing the user to take immediate and corrective action. The user can also subsequently select disinfection utilizing UVC wavelength light to sterilize the particulate collector and Instant Particulate Detector or IPD device.
    Type: Application
    Filed: April 20, 2020
    Publication date: October 1, 2020
    Applicant: DeNovo Lighting, LLC
    Inventors: John F. Luk, Georgiana Hsu-Luk, Danielle Luk
  • Patent number: 10333344
    Abstract: A dimmer device for connection to a conventional uninterruptible power supply (UPS) may include a dimmer and a switch assembly that can be configured to provide an automatically switched dimming output to LED loads during a power failure. An integrated emergency backup system may include a charging circuit, a battery, an inverter, a dimmer and a switch circuit that provides an automatically switched dimming output to LED loads during a power failure. The system may operate in either phase dimming mode or 0-10 v low voltage dimming mode. A lighting fixture that includes a light fixture with built-in emergency backup system is also disclosed.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: June 25, 2019
    Assignee: DeNovo Lighting LLC
    Inventor: John F. Luk
  • Publication number: 20170244278
    Abstract: A dimmer device for connection to a conventional uninterruptible power supply (UPS) may include a dimmer and a switch assembly that can be configured to provide an automatically switched dimming output to LED loads during a power failure. An integrated emergency backup system may include a charging circuit, a battery, an inverter, a dimmer and a switch circuit that provides an automatically switched dimming output to LED loads during a power failure. The system may operate in either phase dimming mode or 0-10 v low voltage dimming mode. A lighting fixture that includes a light fixture with built-in emergency backup system is also disclosed.
    Type: Application
    Filed: February 21, 2017
    Publication date: August 24, 2017
    Applicant: DeNovo Lighting LLC
    Inventor: John F. Luk
  • Patent number: 9482398
    Abstract: A lightweight and thermally efficient LED lighting module is disclosed for recessed down light can retrofits, or as new down light installations mountable to different size junction boxes consisting of a combination heat sink and trim ring unitary metal dish for the attachment of at least one LED array mounted to a circuit board, or at least one chip-on-board or COB LED array, further including at least two removable springs or clips, junction box mounting screw clearance holes, an optional external dimmable LED driver, and a diffusion lens cover installed to the front of the LED lighting module.
    Type: Grant
    Filed: March 28, 2015
    Date of Patent: November 1, 2016
    Assignee: DeNovo Lighting LLC
    Inventor: John F. Luk
  • Patent number: 8911134
    Abstract: An exit sign comprising a housing, a plurality of green color LEDs and red color LEDs or bicolor green and red color LEDs positioned in the housing for emitting both a green color light and a red color light with a filter holder for holding a selected green color filter or a selected red color filter for passing the selected green color light or selected red color light to a stencil having openings for passing the selected green color light or selected red color light to an observer. Yellow color LEDs can be alternatively positioned in the housing for emitting yellow color light comprising both green color light and red color light. White color LEDs can also be alternatively positioned in the housing for emitting white color light also comprising both green color light and red color light.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: December 16, 2014
    Assignee: DeNovo Lighting, LLC
    Inventor: Georgiana Hsu
  • Patent number: 8729809
    Abstract: LED driver circuits containing voltage reducing devices, voltage regulating devices, and voltage converting devices are disclosed as the main components to provide power to LEDs. The LED driver circuits are designed to work with a ballast, mains alternating current voltage, direct current voltage, and electromagnetic induction power. The voltage regulating devices can be a resistor in series with at least one zener diode or a voltage regulator both in parallel with and providing power to the LEDs. The LEDs can also be anti-parallel diode pairs consisting of one diode and one LED or two LEDs, or the LEDs can be anti-parallel diode string pairs consisting of diodes and LEDs or all LEDs. The LED driver circuits will be incorporated into LED replacement lamps, and in particular to LED lamps to replace fluorescent lamps for use with existing ballasts and other power sources where the ballast may be removed or bypassed.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 20, 2014
    Assignee: DeNovo Lighting, LLC
    Inventors: John Kit, Georgiana Hsu
  • Patent number: 7507001
    Abstract: An energy saving device for an LED lamp mounted to an existing fixture for a fluorescent lamp where the ballast is removed or bypassed. The LEDs are positioned within a tube and electrical power is delivered from a power source to the LEDs. The LED lamp includes means for controlling the delivery of the electrical power from the power source to the LEDs, wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such means for controlling includes means for detecting the level of daylight in the illumination area of said least one LED, in particular a light level photosensor, and means for transmitting to the means for controlling relating to the detected level of daylight from the photosensor. The photosensor can be used in operative association with an on-off switch in power connection to the LEDs, a timer, or with a computer or logic gate array in operative association with a switch, timer, or dimmer that regulates the power to the LEDs.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: March 24, 2009
    Assignee: DeNovo Lighting, LLC
    Inventor: John Kit
  • Publication number: 20070228999
    Abstract: An energy saving device for an LED lamp mounted to an existing fixture for a fluorescent lamp where the ballast is removed or bypassed. The LEDs are positioned within a tube and electrical power is delivered from a power source to the LEDs. The LED lamp includes means for controlling the delivery of the electrical power from the power source to the LEDs, wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such means for controlling includes means for detecting the level of daylight in the illumination area of said least one LED, in particular a light level photosensor, and means for transmitting to the means for controlling relating to the detected level of daylight from the photosensor. The photosensor can be used in operative association with an on-off switch in power connection to the LEDs, a timer, or with a computer or logic gate array in operative association with a switch, timer, or dimmer that regulates the power to the LEDs.
    Type: Application
    Filed: May 21, 2007
    Publication date: October 4, 2007
    Applicant: DENOVO LIGHTING, LLC
    Inventor: John Kit
  • Patent number: 7067992
    Abstract: A power saving device for a light emitting diode (LED) lamp mounted to an existing fixture for a fluorescent lamp having a ballast assembly and LEDs positioned within a tube and electrical power delivered from the ballast assembly to the LEDs. The LED lamp includes a device for controlling the delivery of the electrical power from the ballast assembly to the LEDs wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such device for controlling can include an on-off switch mounted in the tube or can also include a current driver dimmer mounted in the tube that regulates the amount of power delivered to the LEDs. A computer or logic arrays control the dimmer or power switch. A sensor such as an occupancy motion detection sensor mounted external to the tube or within the tube can send signals to the computer or logic array to trigger a switch or control a dimmer.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: June 27, 2006
    Assignee: DeNovo Lighting, LLC
    Inventors: Susan J. Leong, John Kit
  • Publication number: 20050281030
    Abstract: A power saving device for a light emitting diode (LED) lamp mounted to an existing fixture for a fluorescent lamp having a ballast assembly and LEDs positioned within a tube and electrical power delivered from the ballast assembly to the LEDs. The LED lamp includes means for controlling the delivery of the electrical power from the ballast assembly to the LEDs wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such means for controlling include means for detecting the level of daylight in the illumination area of said least one LED in particular a light level photosensor and means for transmitting to the means for controlling a control signal relating to the detected level of daylight from the photosensor. The photosensor can be used in operative association with an on-off switch in power connection to the LEDs, or with a computer or logic gate array in operative association with a dimmer that controls the power to the LEDs.
    Type: Application
    Filed: August 5, 2005
    Publication date: December 22, 2005
    Applicant: DeNovo Lighting, LLC
    Inventors: Susan Leong, John Kit
  • Publication number: 20050162101
    Abstract: A power saving device for a light emitting diode (LED) lamp mounted to an existing fixture for a fluorescent lamp having a ballast assembly and LEDs positioned within a tube and electrical power delivered from the ballast assembly to the LEDs. The LED lamp includes means for controlling the delivery of the electrical power from the ballast assembly to the LEDs wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such means for controlling can include an on-off switch mounted in the tube or can also include a current driver dimmer mounted in the tube that regulates the amount of power delivered to the LEDs. A computer or logic arrays control the dimmer or power switch. A sensor such as an occupancy motion detection sensor mounted external to the tube or within the tube can send signals to the computer or logic array to trigger a switch or control a dimmer.
    Type: Application
    Filed: February 7, 2005
    Publication date: July 28, 2005
    Applicant: DeNovo Lighting, LLC
    Inventors: Susan Leong, John Kit
  • Patent number: 6853151
    Abstract: An LED lamp for mounting to an existing fluorescent lamp fixture having a ballast assembly including ballast opposed electrical contacts, comprising a tubular wall generally circular in cross-section and having tubular wall ends with one or more LEDs positioned within the tubular wall between the tubular wall ends. An electrical circuit provides electrical power from the ballast assembly to the LED(s). The electrical circuit includes at least one metal substrate circuit board and means for electrically connecting the electrical circuit with the ballast assembly. The electrical circuit includes an LED electrical circuit including opposed electrical contacts. Each metal substrate circuit board supports and holds the one or more LEDs and the LED electrical circuit. Each metal substrate circuit board is positioned within the tubular wall between the tubular wall ends. At least one electrical string is positioned within the tubular wall and generally extends between the tubular wall ends.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: February 8, 2005
    Assignee: Denovo Lighting, LLC
    Inventors: Susan J. Leong, John Kit
  • Patent number: 6762562
    Abstract: An LED lamp comprising a tubular wall circular, oval, or multi-faceted in cross-section having tubular wall ends. At least one electrical string mounted within the tubular wall extends between the tubular wall ends with at least one LED electrically mounted thereto. Electrical circuit means providing power to at least one LED from the ballast assembly of a fluorescent lamp fixture. Electrical circuit means include an LED circuit including at least one electrical string each having one LED or a plurality of LEDs connected in series thereto. The at least one electrical string can further include two electrical strings in parallel or a plurality of parallel electrical strings. Means for suppressing voltage delivered from the ballast assembly to an LED operating voltage within the design capacity of said plurality of LEDs in electrical connection with the electrical circuit means.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: July 13, 2004
    Assignee: DeNovo Lighting, LLC
    Inventor: Susan J. Leong