公开(公告)号：US20220057050A1

公开(公告)日：2022-02-24

申请号：US17413904

申请日：2019-12-17

申请人： LUTRON KETRA LLC

发明人： Fangxu Dong

IPC分类号： F21K9/233 ,  H05B45/20 ,  F21K9/66 ,  F21K9/68

摘要： 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).

公开(公告)号：US20210054986A1

公开(公告)日：2021-02-25

申请号：US17013214

申请日：2020-09-04

申请人： Lutron Ketra, LLC

发明人： Fangxu Dong ,  Horace C. Ho ,  David J. Knapp

IPC分类号： F21V5/00 ,  F21K9/233 ,  F21V23/04 ,  H05B45/22 ,  H05B45/46

摘要： 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.

公开(公告)号：US10767835B2

公开(公告)日：2020-09-08

申请号：US16422927

申请日：2019-05-24

申请人： Lutron Ketra, LLC

发明人： Fangxu Dong ,  Horace C. Ho ,  David J. Knapp

IPC分类号： F21V5/00 ,  F21K9/233 ,  F21V23/04 ,  H05B45/22 ,  H05B45/46 ,  F21Y113/13 ,  F21Y105/10

摘要： 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.

公开(公告)号：US10591134B2

公开(公告)日：2020-03-17

申请号：US15498671

申请日：2017-04-27

申请人： Lutron Ketra, LLC

发明人： Fangxu Dong

IPC分类号： F21V5/04 ,  F21K9/68 ,  F21K9/66 ,  F21K9/69 ,  G02B3/00 ,  G02B19/00 ,  F21Y115/10 ,  F21V7/00 ,  F21V7/06 ,  F21V5/00

摘要： 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. According to another embodiment, diffusion elements are manufactured and possibly increased on only select surfaces but not on the light exit region in order to lessen glare. Three light interactions in a first portion of light and two interactions in a second portion of light can improve color mixing and beam control. Those interactions includes two refractions either with an intermediate reflection or not, all of which are necessary to achieve the improved performance of the multi-color LED illumination device and lens hereof.

公开(公告)号：US20190277477A1

公开(公告)日：2019-09-12

申请号：US16422927

申请日：2019-05-24

申请人： Lutron Ketra, LLC

发明人： Fangxu Dong ,  Horace C. Ho ,  David J. Knapp

IPC分类号： F21V5/00 ,  F21K9/233 ,  H05B33/08 ,  F21V23/04

摘要： 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.

公开(公告)号：US10302276B2

公开(公告)日：2019-05-28

申请号：US15653608

申请日：2017-07-19

申请人： Lutron Ketra, LLC

发明人： Fangxu Dong ,  Horace C. Ho ,  David J. Knapp

IPC分类号： F21V5/00 ,  H05B33/08 ,  F21V23/04 ,  F21K9/233 ,  F21Y105/10 ,  F21Y113/13

摘要： 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.