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).
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Publication number: 20240126055Abstract: 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: ApplicationFiled: December 21, 2023Publication date: April 18, 2024Applicant: Lutron Technology Company LLCInventor: Fangxu Dong
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Publication number: 20240121874Abstract: 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: ApplicationFiled: December 19, 2023Publication date: April 11, 2024Applicant: Lutron Technology Company LLCInventors: Ryan M. Bocock, Fangxu Dong, Ari L. Fox, Christopher M. Green, Peter W. Ogden, JR., Stephen Phillips, Jonathan R. Redus, Jaykrishna A. Shukla
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Publication number: 20240102632Abstract: 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: ApplicationFiled: September 25, 2023Publication date: March 28, 2024Applicant: Lutron Technology Company LLCInventors: Fangxu Dong, Joseph M. Nissen
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Patent number: 11920780Abstract: 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: GrantFiled: January 16, 2023Date of Patent: March 5, 2024Assignee: Lutron Technology Company LLCInventor: Fangxu Dong
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Patent number: 11917739Abstract: 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: GrantFiled: December 6, 2022Date of Patent: February 27, 2024Assignee: Lutron Technology Company LLCInventors: Ryan M. Bocock, Fangxu Dong, Ari L. Fox, Christopher M. Green, Peter W. Ogden, Jr., Stephen Phillips, Jonathan R. Redus, Jaykrishna A. Shukla
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Patent number: 11885945Abstract: 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: GrantFiled: May 8, 2023Date of Patent: January 30, 2024Assignee: Lutron Technology Company LLCInventor: Fangxu Dong
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Publication number: 20230280572Abstract: 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: ApplicationFiled: May 8, 2023Publication date: September 7, 2023Applicant: Lutron Technology Company LLCInventor: Fangxu Dong
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Publication number: 20230250935Abstract: 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: ApplicationFiled: April 17, 2023Publication date: August 10, 2023Applicant: Lutron Technology Company LLCInventors: Fangxu Dong, Horace C. Ho, David J. Knapp
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Publication number: 20230235861Abstract: 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: ApplicationFiled: March 27, 2023Publication date: July 27, 2023Applicant: Lutron Technology Company LLCInventor: Fangxu Dong
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Publication number: 20230213168Abstract: 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: ApplicationFiled: January 16, 2023Publication date: July 6, 2023Applicant: Lutron Technology Company LLCInventor: Fangxu Dong
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Patent number: 11681131Abstract: A multi-color LED illumination device and 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 an entirety of a 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 elements placed on sidewall and upper planar surfaces of the cylindrical opening, as well as on 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. The interactions include two refractions, either with or without an intermediate reflection.Type: GrantFiled: July 27, 2021Date of Patent: June 20, 2023Assignee: Lutron Technology Company LLCInventor: Fangxu Dong
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Patent number: 11662077Abstract: 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: GrantFiled: May 9, 2022Date of Patent: May 30, 2023Assignee: Lutron Technology Company LLCInventors: Fangxu Dong, Horace C. Ho, David J. Knapp
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Publication number: 20230097102Abstract: 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: ApplicationFiled: December 6, 2022Publication date: March 30, 2023Applicant: Lutron Technology Company LLCInventors: Ryan M. Bocock, Fangxu Dong, Ari L. Fox, Christopher M. Green, Peter W. Ogden, JR., Stephen Phillips, Jonathan R. Redus, Jaykrishna A. Shukla
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Patent number: 11614206Abstract: 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: GrantFiled: December 17, 2019Date of Patent: March 28, 2023Assignee: Lutron Technology Company LLCInventor: Fangxu Dong
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Patent number: 11570874Abstract: 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: GrantFiled: July 30, 2021Date of Patent: January 31, 2023Assignee: Lutron Technology Company LLCInventors: Ryan M. Bocock, Fangxu Dong, Ari L. Fox, Christopher M. Green, Peter W. Ogden, Jr., Stephen Phillips, Jonathan R. Redus, Jaykrishna A. Shukla
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Patent number: 11555597Abstract: 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 according to one embodiment.Type: GrantFiled: May 27, 2022Date of Patent: January 17, 2023Assignee: Lutron Technology Company LLCInventor: Fangxu Dong
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Publication number: 20220290839Abstract: 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 according to one embodiment.Type: ApplicationFiled: May 27, 2022Publication date: September 15, 2022Applicant: Lutron Technology Company LLCInventor: Fangxu Dong
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Publication number: 20220260232Abstract: 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: ApplicationFiled: May 9, 2022Publication date: August 18, 2022Applicant: Lutron Technology Company LLCInventors: Fangxu Dong, Horace C. Ho, David J. Knapp
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Patent number: 11346527Abstract: 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 according to one embodiment.Type: GrantFiled: March 16, 2020Date of Patent: May 31, 2022Assignee: Lutron Technology Company LLCInventor: Fangxu Dong
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Patent number: 11326761Abstract: 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: GrantFiled: September 4, 2020Date of Patent: May 10, 2022Assignee: Lutron Technology Company LLCInventors: Fangxu Dong, Horace C. Ho, David J. Knapp