US 11,991,805 B2
Control of dynamic brightness of light-emitting diode array
Christopher F. Davis, Parkland, FL (US); Howard Russell Cohen, Weston, FL (US); Mihailo Slobodan Zivkovic, Plantation, FL (US); and Marshall Charles Capps, Austin, TX (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Oct. 31, 2022, as Appl. No. 17/977,648.
Application 17/977,648 is a continuation of application No. 17/126,592, filed on Dec. 18, 2020, granted, now 11,497,097.
Claims priority of provisional application 62/950,324, filed on Dec. 19, 2019.
Prior Publication US 2023/0052511 A1, Feb. 16, 2023
Int. Cl. H05B 45/46 (2020.01); H05B 45/10 (2020.01)
CPC H05B 45/46 (2020.01) [H05B 45/10 (2020.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for controlling a light-emitting diode (LED) array, the apparatus comprising:
an LED driver circuit configured to generate an electric current;
one or more LEDs of the LED array, the one or more LEDs electrically connected to the LED driver circuit; and
an electronic switching circuit electrically connected in parallel to a first LED of the one or more LEDs and configured to:
be placed in one of a plurality of switching configurations; and
direct a portion of the electric current away from the first LED of the one or more LEDs, such that a remaining portion of the electric current drives the first LED of the one or more LEDs, and the portion of the electric current corresponds to the one of the plurality of switching configurations,
wherein the electronic switching circuit comprises:
a plurality of electronic switches electrically connected in a first parallel configuration; and
a plurality of resistors electrically connected in a second parallel configuration, each electronic switch of the plurality of electronic switches electrically connected to one or more corresponding resistors of the plurality of resistors.