Patents by Inventor Fangxu Dong

Fangxu Dong 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: 12372208
    Abstract: An emitter module for a light-emitting diode (LED) light source may comprise a substrate, and a plurality of emitters mounted to the substrate, where each emitter is configured to produce illumination at a different wavelength, and the number of emitters is greater than four (e.g., five emitters). The emitter module may also comprise a dome mounted to the substrate and encapsulating the plurality of emitters. Each of the plurality of emitters is arranged such that a center of the emitter is located on a circular center line that has a center that is the same as a center of the dome. Each of the plurality of emitters is located on a different primary radial axis of the emitter module. Each of the primary radial axes of the emitter module is equally spaced apart by an offset angle. The emitter module may also comprise an additional one of each of the emitters at each of the different wavelengths (e.g., ten total emitters).
    Type: Grant
    Filed: July 19, 2024
    Date of Patent: July 29, 2025
    Assignee: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Publication number: 20250164766
    Abstract: A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness using three interactions in a first portion of light and two interactions in a second portion of light.
    Type: Application
    Filed: January 17, 2025
    Publication date: May 22, 2025
    Applicant: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Publication number: 20250155104
    Abstract: A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and, depending on whether glare control is not needed, the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening and if lessening glare is needed, also on the TIR outer reflective surface. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness.
    Type: Application
    Filed: January 16, 2025
    Publication date: May 15, 2025
    Applicant: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Publication number: 20250155103
    Abstract: Illumination devices with improved color mixing optics are disclosed herein for mixing the colors produced by a multi-colored LED emitter module to produce uniform color throughout the entire beam angle of the output light beam, along with smoother edges and improved center beam intensity. Embodiments disclosed herein include a unique arrangement of multi-color LEDs within an emitter module, a unique exit lens with different patterns of lenslets on opposing sides of the lens, and other associated optical features that thoroughly mix the different color components, and as such, provide uniform color across the output beam exiting the illumination device. Additional embodiments disclosed herein include a unique arrangement of photodetectors within the primary optics structure of the LED emitter module that ensure the optical feedback system properly measures the light produced by all similarly colored emission LEDs.
    Type: Application
    Filed: January 16, 2025
    Publication date: May 15, 2025
    Applicant: Lutron Technology Company LLC
    Inventors: Fangxu Dong, Horace C. Ho, David J. Knapp
  • Patent number: 12292184
    Abstract: Illumination devices with improved color mixing optics are disclosed herein for mixing the colors produced by a multi-colored LED emitter module to produce uniform color throughout the entire beam angle of the output light beam, along with smoother edges and improved center beam intensity. Embodiments disclosed herein include a unique arrangement of multi-color LEDs within an emitter module, a unique exit lens with different patterns of lenslets on opposing sides of the lens, and other associated optical features that thoroughly mix the different color components, and as such, provide uniform color across the output beam exiting the illumination device. Additional embodiments disclosed herein include a unique arrangement of photodetectors within the primary optics structure of the LED emitter module that ensure the optical feedback system properly measures the light produced by all similarly colored emission LEDs.
    Type: Grant
    Filed: August 22, 2024
    Date of Patent: May 6, 2025
    Assignee: Lutron Technology Company LLC
    Inventors: Fangxu Dong, Horace C. Ho, David J. Knapp
  • Patent number: 12253661
    Abstract: A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness using three interactions in a first portion of light and two interactions in a second portion of light.
    Type: Grant
    Filed: December 21, 2023
    Date of Patent: March 18, 2025
    Assignee: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Publication number: 20250089147
    Abstract: A linear lighting device may include an elongated housing that defines a cavity. The linear lighting device may include plurality of emitter printed circuit boards configured to be received within the cavity. Each of the plurality of emitter printed circuit boards may include a plurality of emitter modules mounted thereto. Each of the plurality of emitter printed circuit boards may include a control circuit configured to control the plurality of emitter modules mounted to the respective emitter printed circuit board based on receipt of one or more messages. The linear lighting device may include a total internal reflection lens for each of the plurality of emitter printed circuit boards. The total internal reflection lens may be configured to diffuse light emitted by the emitter modules of the plurality of emitter printed circuit boards.
    Type: Application
    Filed: November 21, 2024
    Publication date: March 13, 2025
    Applicant: Lutron Technology Company LLC
    Inventors: Ryan M. Bocock, Fangxu Dong, Ari L. Fox, Christopher M. Green, Peter W. Ogden, JR., Stephen Phillips, Jonathan R. Redus, Jaykrishna A. Shukla
  • Publication number: 20250075877
    Abstract: An optical system may comprise an emitter assembly and an optical structure that are configured to be used with a lighting device for providing a narrow beam angle for the lighting device. The emitter assembly may comprise an array of emitters configured to emit light. The optical structure may comprise a body having a light-entry portion, a light-exit portion, and side wall extending between the light-entry portion and the light-exit portion. The side wall of the optical structure may define a total internal reflection (TIR) surface. The light-exit portion may comprise a front surface and an octagon-shaped well formed into the front surface. The octagon-shaped well may have a center surface surrounded by a beveled portion configured to refract light that is reflected off of the TIR surface towards a central axis of the optical system, such that light rays that are transmitted from the light-exit portion are substantially collimated.
    Type: Application
    Filed: September 6, 2024
    Publication date: March 6, 2025
    Applicant: Lutron Technology Company LLC
    Inventors: Fangxu Dong, Dong Jenna Lu
  • Patent number: 12234984
    Abstract: A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and, depending on whether glare control is not needed, the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening and if lessening glare is needed, also on the TIR outer reflective surface. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness.
    Type: Grant
    Filed: February 2, 2024
    Date of Patent: February 25, 2025
    Assignee: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Patent number: 12193126
    Abstract: A linear lighting device may include an elongated housing that defines a cavity. The linear lighting device may include plurality of emitter printed circuit boards configured to be received within the cavity. Each of the plurality of emitter printed circuit boards may include a plurality of emitter modules mounted thereto. Each of the plurality of emitter printed circuit boards may include a control circuit configured to control the plurality of emitter modules mounted to the respective emitter printed circuit board based on receipt of one or more messages. The linear lighting device may include a total internal reflection lens for each of the plurality of emitter printed circuit boards. The total internal reflection lens may be configured to diffuse light emitted by the emitter modules of the plurality of emitter printed circuit boards.
    Type: Grant
    Filed: December 19, 2023
    Date of Patent: January 7, 2025
    Assignee: Lutron Technology Company LLC
    Inventors: Ryan M. Bocock, Fangxu Dong, Ari L. Fox, Christopher M. Green, Peter W. Ogden, Jr., Stephen Phillips, Jonathan R. Redus, Jaykrishna A. Shukla
  • Publication number: 20240410548
    Abstract: Illumination devices with improved color mixing optics are disclosed herein for mixing the colors produced by a multi-colored LED emitter module to produce uniform color throughout the entire beam angle of the output light beam, along with smoother edges and improved center beam intensity. Embodiments disclosed herein include a unique arrangement of multi-color LEDs within an emitter module, a unique exit lens with different patterns of lenslets on opposing sides of the lens, and other associated optical features that thoroughly mix the different color components, and as such, provide uniform color across the output beam exiting the illumination device. Additional embodiments disclosed herein include a unique arrangement of photodetectors within the primary optics structure of the LED emitter module that ensure the optical feedback system properly measures the light produced by all similarly colored emission LEDs.
    Type: Application
    Filed: August 22, 2024
    Publication date: December 12, 2024
    Applicant: Lutron Technology Company LLC
    Inventors: Fangxu Dong, Horace C. Ho, David J. Knapp
  • Publication number: 20240377038
    Abstract: An emitter module for a light-emitting diode (LED) light source may comprise a substrate, and a plurality of emitters mounted to the substrate, where each emitter is configured to produce illumination at a different wavelength, and the number of emitters is greater than four (e.g., five emitters). The emitter module may also comprise a dome mounted to the substrate and encapsulating the plurality of emitters. Each of the plurality of emitters is arranged such that a center of the emitter is located on a circular center line that has a center that is the same as a center of the dome. Each of the plurality of emitters is located on a different primary radial axis of the emitter module. Each of the primary radial axes of the emitter module is equally spaced apart by an offset angle. The emitter module may also comprise an additional one of each of the emitters at each of the different wavelengths (e.g., ten total emitters).
    Type: Application
    Filed: July 19, 2024
    Publication date: November 14, 2024
    Applicant: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Patent number: 12072091
    Abstract: Illumination devices with improved color mixing optics are disclosed herein for mixing the colors produced by a multi-colored LED emitter module to produce uniform color throughout the entire beam angle of the output light beam, along with smoother edges and improved center beam intensity. Embodiments disclosed herein include a unique arrangement of multi-color LEDs within an emitter module, a unique exit lens with different patterns of lenslets on opposing sides of the lens, and other associated optical features that thoroughly mix the different color components, and as such, provide uniform color across the output beam exiting the illumination device. Additional embodiments disclosed herein include a unique arrangement of photodetectors within the primary optics structure of the LED emitter module that ensure the optical feedback system properly measures the light produced by all similarly colored emission LEDs.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: August 27, 2024
    Assignee: Lutron Technology Company LLC
    Inventors: Fangxu Dong, Horace C. Ho, David J. Knapp
  • Patent number: 12072068
    Abstract: An emitter module for a light-emitting diode (LED) light source may comprise a substrate, and a plurality of emitters mounted to the substrate, where each emitter is configured to produce illumination at a different wavelength, and the number of emitters is greater than four (e.g., five emitters). The emitter module may also comprise a dome mounted to the substrate and encapsulating the plurality of emitters. Each of the plurality of emitters is arranged such that a center of the emitter is located on a circular center line that has a center that is the same as a center of the dome. Each of the plurality of emitters is located on a different primary radial axis of the emitter module. Each of the primary radial axes of the emitter module is equally spaced apart by an offset angle. The emitter module may also comprise an additional one of each of the emitters at each of the different wavelengths (e.g., ten total emitters).
    Type: Grant
    Filed: March 27, 2023
    Date of Patent: August 27, 2024
    Assignee: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Publication number: 20240230061
    Abstract: A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and, depending on whether glare control is not needed, the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening and if lessening glare is needed, also on the TIR outer reflective surface. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness.
    Type: Application
    Filed: February 2, 2024
    Publication date: July 11, 2024
    Applicant: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Publication number: 20240126055
    Abstract: A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness using three interactions in a first portion of light and two interactions in a second portion of light.
    Type: Application
    Filed: December 21, 2023
    Publication date: April 18, 2024
    Applicant: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Publication number: 20240121874
    Abstract: A linear lighting device may include an elongated housing that defines a cavity. The linear lighting device may include plurality of emitter printed circuit boards configured to be received within the cavity. Each of the plurality of emitter printed circuit boards may include a plurality of emitter modules mounted thereto. Each of the plurality of emitter printed circuit boards may include a control circuit configured to control the plurality of emitter modules mounted to the respective emitter printed circuit board based on receipt of one or more messages. The linear lighting device may include a total internal reflection lens for each of the plurality of emitter printed circuit boards. The total internal reflection lens may be configured to diffuse light emitted by the emitter modules of the plurality of emitter printed circuit boards.
    Type: Application
    Filed: December 19, 2023
    Publication date: April 11, 2024
    Applicant: Lutron Technology Company LLC
    Inventors: Ryan M. Bocock, Fangxu Dong, Ari L. Fox, Christopher M. Green, Peter W. Ogden, JR., Stephen Phillips, Jonathan R. Redus, Jaykrishna A. Shukla
  • Publication number: 20240102632
    Abstract: A lighting device may include a first lens, a housing defining a cavity, an emitter, a reflector, and an internal optical structure. The emitter may be mounted within the housing. The emitter may be configured to generate light. The reflector may be located within the cavity. The reflector may be configured to reflect the light generated by the emitter toward the first lens. The internal optical structure may be located between the emitter and the first lens. The internal optical structure may include a second lens and a light shield between the second lens and the emitter. The light shield may include a first surface configured to reflect the light emitted by emitter. The light shield may include one or more apertures therethrough that are configured to allow the light emitted by the emitter to pass therethrough.
    Type: Application
    Filed: September 25, 2023
    Publication date: March 28, 2024
    Applicant: Lutron Technology Company LLC
    Inventors: Fangxu Dong, Joseph M. Nissen
  • Patent number: 11920780
    Abstract: A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and, depending on whether glare control is not needed, the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening and if lessening glare is needed, also on the TIR outer reflective surface. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness.
    Type: Grant
    Filed: January 16, 2023
    Date of Patent: March 5, 2024
    Assignee: Lutron Technology Company LLC
    Inventor: Fangxu Dong
  • Patent number: 11917739
    Abstract: A linear lighting device may include an elongated housing that defines a cavity. The linear lighting device may include plurality of emitter printed circuit boards configured to be received within the cavity. Each of the plurality of emitter printed circuit boards may include a plurality of emitter modules mounted thereto. Each of the plurality of emitter printed circuit boards may include a control circuit configured to control the plurality of emitter modules mounted to the respective emitter printed circuit board based on receipt of one or more messages. The linear lighting device may include a total internal reflection lens for each of the plurality of emitter printed circuit boards. The total internal reflection lens may be configured to diffuse light emitted by the emitter modules of the plurality of emitter printed circuit boards.
    Type: Grant
    Filed: December 6, 2022
    Date of Patent: February 27, 2024
    Assignee: Lutron Technology Company LLC
    Inventors: Ryan M. Bocock, Fangxu Dong, Ari L. Fox, Christopher M. Green, Peter W. Ogden, Jr., Stephen Phillips, Jonathan R. Redus, Jaykrishna A. Shukla