US 11,668,452 B2
Integrated optical system for dynamic diffuse and directional lighting
Wouter Soer, Utrecht (NL); and Johannes Willem Herman Sillevis Smitt, San Jose, CA (US)
Assigned to Lumileds LLC, San Jose, CA (US)
Filed by Lumileds LLC, San Jose, CA (US)
Filed on Jan. 24, 2022, as Appl. No. 17/582,649.
Application 17/582,649 is a continuation of application No. 17/020,390, filed on Sep. 14, 2020, granted, now 11,262,048.
Claims priority of provisional application 63/047,631, filed on Jul. 2, 2020.
Prior Publication US 2022/0221132 A1, Jul. 14, 2022
Int. Cl. F21V 14/06 (2006.01); F21V 23/00 (2015.01); F21K 9/61 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 14/06 (2013.01) [F21K 9/61 (2016.08); F21V 23/003 (2013.01); F21Y 2115/10 (2016.08)] 20 Claims
OG exemplary drawing
 
1. An illumination system, comprising:
a light guide having a first surface and a second surface opposite the first surface;
a light-emitting diode (LED) array configured to direct first light into the light guide through the first surface of the light guide;
focusing optics configured to collimate the first light to emerge from the light guide through the second surface of the light guide as collimated projected light; and
an LED spaced apart from the LED array and configured to direct second light into the light guide as guided light that is guided between the first surface and the second surface.