US RE50,582 E1
Color mixing optics for LED lighting
Fangxu Dong, Austin, TX (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Aug. 27, 2021, as Appl. No. 17/459,159.
Application 17/459,159 is a continuation of application No. 16/198,005, filed on Nov. 21, 2018, granted, now RE48712.
Application 16/198,005 is a reissue of application No. 14/474,408, filed on Sep. 2, 2014, granted, now 9,500,324, issued on Nov. 22, 2016.
Application 17/459,159 is a reissue of application No. 14/474,408, filed on Sep. 2, 2014, granted, now 9,500,324, issued on Nov. 22, 2016.
This patent is subject to a terminal disclaimer.
Int. Cl. F21K 99/00 (2016.01); F21K 9/232 (2016.01); F21K 9/62 (2016.01); F21V 7/00 (2006.01); F21V 7/06 (2006.01); F21V 13/04 (2006.01); F21Y 113/17 (2016.01); F21Y 115/10 (2016.01)
CPC F21K 9/232 (2016.08) [F21K 9/62 (2016.08); F21V 7/0025 (2013.01); F21V 7/0091 (2013.01); F21V 7/06 (2013.01); F21V 13/04 (2013.01); F21Y 2113/17 (2016.08); F21Y 2115/10 (2016.08)] 20 Claims
OG exemplary drawing
 
[ 20. A lamp comprising:
a hollow parabolic reflective surface disposed about a central axis;
a transparent cover member disposed coaxially along the central axis, proximate a first end of the hollow parabolic reflective surface; and
a total internal reflection (TIR) lens having an external surface, the TIR lens disposed coaxially along the central axis inside the hollow parabolic reflective surface;
wherein an exit surface of the TIR lens is disposed proximate the transparent cover;
wherein the transparent cover member spaces the external surface of the TIR lens apart from the hollow parabolic reflective surface to provide a gab between the TIR lens and the reflective surface;
wherein the TIR lens and the hollow parabolic reflective surface have a common focal point; and
wherein the lamp is configured to accommodate a light-emitting diode (LED) light source disposed at the common focal point such that light emitted by the LED light source either: enters the TIR lens at a normal angle and passes through the TIR lens; or reflects from the hollow parabolic reflective surface without passing through the TIR lens. ]