Inventor
DONG FANGXU
US37 patents
⚠️ This page may combine multiple inventors who share the name “DONG FANGXU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LUTRON TECH CO LLC
29 patentsUS12253661B2Mar 18, 2025
Total internal reflection lens to improve color mixing of an LED light source
LUTRON TECH CO LLC4 citations86
US11106025B2Aug 31, 2021
Total internal reflection lens having a straight sidewall entry and a concave spherical exit bounded by a compound parabolic concentrator outer surface to improve color mixing of an LED light source
LUTRON TECH CO LLC5 citations84
US11570874B2Jan 31, 2023
Linear lighting device
LUTRON TECH CO LLC5 citations83
US12234984B2Feb 25, 2025
Lens for improved color mixing and beam control of an LED light source
LUTRON TECH CO LLC2 citations75
US11885945B2Jan 30, 2024
Total internal reflection lens to improve color mixing of an LED light source
LUTRON TECH CO LLC2 citations73
US11614206B2Mar 28, 2023
Light source having multiple differently-colored emitters
LUTRON TECH CO LLC1 citations73
US11555597B2Jan 17, 2023
Lens for improved color mixing and beam control of an LED light source
LUTRON TECH CO LLC2 citations73
US11346527B2May 31, 2022
Lens for improved color mixing and beam control of an LED light source
LUTRON TECH CO LLC2 citations73
USRE48873EJan 4, 2022
Asymmetric linear LED luminaire design for uniform illuminance and color
LUTRON TECH CO LLC1 citations73
USRE48712EAug 31, 2021
Color mixing optics for LED lighting
LUTRON TECH CO LLC3 citations73
US12571517B2Mar 10, 2026
Color mixing optics for LED illumination device
LUTRON TECH CO LLC0 citations62
US12535667B2Jan 27, 2026
Total internal reflection lens to improve color mixing of an LED light source
LUTRON TECH CO LLC0 citations62
US12523352B2Jan 13, 2026
Lens for improved color mixing and beam control of an LED light source
LUTRON TECH CO LLC0 citations62
USRE50582ESep 9, 2025
Color mixing optics for LED lighting
LUTRON TECH CO LLC0 citations62
USRE50569ESep 2, 2025
Asymmetric linear LED luminaire design for uniform illuminance and color
LUTRON TECH CO LLC0 citations62
US12372208B2Jul 29, 2025
Light source having multiple differently-colored emitters
LUTRON TECH CO LLC0 citations62
US12292184B2May 6, 2025
Color mixing optics for LED illumination device
LUTRON TECH CO LLC0 citations62
US12072068B2Aug 27, 2024
Light source having multiple differently-colored emitters
LUTRON TECH CO LLC0 citations62
US12072091B2Aug 27, 2024
Color mixing optics for LED illumination device
LUTRON TECH CO LLC0 citations62
US11920780B2Mar 5, 2024
Lens for improved color mixing and beam control of an LED light source
LUTRON TECH CO LLC0 citations62
US11681131B2Jun 20, 2023
Total internal reflection lens to improve color mixing of an LED light source
LUTRON TECH CO LLC0 citations62
US11662077B2May 30, 2023
Color mixing optics for LED illumination device
LUTRON TECH CO LLC0 citations62
US11326761B2May 10, 2022
Color mixing optics for LED illumination device
LUTRON TECH CO LLC0 citations62
US12193126B2Jan 7, 2025
Linear lighting device
LUTRON TECH CO LLC0 citations60
US11917739B2Feb 27, 2024
Linear lighting device
LUTRON TECH CO LLC0 citations60
USRE48922EFeb 1, 2022
Linear LED illumination device with improved color mixing
LUTRON TECH CO LLC0 citations60
USRE50562EAug 26, 2025
Linear LED illumination device with improved color mixing
LUTRON TECH CO LLC0 citations58
USRE50470EJun 24, 2025
Linear LED illumination device with improved color mixing
LUTRON TECH CO LLC0 citations58
US12435859B2Oct 7, 2025
Lighting device with a light shield having apertures
LUTRON TECH CO LLC0 citations41
KETRA INC
5 patentsUS9736895B1Aug 15, 2017
Color mixing optics for LED illumination device
KETRA INC58 citations98
US9360174B2Jun 7, 2016
Linear LED illumination device with improved color mixing
KETRA INC30 citations93
US9500324B2Nov 22, 2016
Color mixing optics for LED lighting
KETRA INC15 citations92
US9458972B1Oct 4, 2016
Asymmetric linear LED luminaire design for uniform illuminance and color
KETRA INC6 citations84
US9668314B2May 30, 2017
Linear LED illumination device with improved color mixing
KETRA INC7 citations82
LUTRON KETRA LLC
3 patentsUS10591134B2Mar 17, 2020
Lens for improved color mixing and beam control of an LED light source
LUTRON KETRA LLC7 citations84
US10302276B2May 28, 2019
Color mixing optics having an exit lens comprising an array of lenslets on an interior and exterior side thereof
LUTRON KETRA LLC6 citations84
US10767835B2Sep 8, 2020
Color mixing optics for LED illumination device
LUTRON KETRA LLC0 citations52