US 12,298,001 B2
Illumination assembly including a microlens array
Jason D. Hallack, Zeeland, MI (US); Danny L Minikey, Jr., Fenwick, MI (US); and Eric P. Bigoness, Ada, MI (US)
Assigned to GENTEX CORPORATION, Zeeland, MI (US); and MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH, Rochester, MN (US)
Filed by Gentex Corporation, Zeeland, MI (US)
Filed on Nov. 27, 2023, as Appl. No. 18/519,461.
Claims priority of provisional application 63/428,175, filed on Nov. 28, 2022.
Prior Publication US 2024/0175565 A1, May 30, 2024
Int. Cl. F21V 5/00 (2018.01); F21K 9/233 (2016.01); F21V 21/03 (2006.01); F21V 21/26 (2006.01); G06F 3/01 (2006.01); F21W 131/20 (2006.01); F21Y 105/18 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 5/007 (2013.01) [F21K 9/233 (2016.08); F21V 5/004 (2013.01); F21V 21/03 (2013.01); F21V 21/26 (2013.01); G06F 3/011 (2013.01); F21W 2131/20 (2013.01); F21Y 2105/18 (2016.08); F21Y 2115/10 (2016.08)] 18 Claims
OG exemplary drawing
 
1. An illumination system comprising:
an array of light-emitting diodes including a plurality of first light-emitting diodes and a plurality of second light-emitting diodes;
a microlens array overlaying the plurality of first and the second light-emitting diodes and including a plurality of first lenses corresponding to the plurality of first light-emitting diodes and a plurality of second lenses corresponding to the plurality of second light-emitting diodes, wherein a first geometry of at least one of the plurality of first lenses defines a first transmission angle that is different than a second transmission angle defined by a second geometry of at least one of the plurality of second lenses;
an imaging device configured to capture an image based on light reflected from a target region by illumination from the first transmission angle; and
at least one processing device in communication with the array of light-emitting diodes and the imaging device, wherein the at least one processing device is configured to identify a shadow cast on the target region by an obstruction and selectively activate the plurality of second light-emitting diodes to illuminate the target region from an unobstructed angle corresponding to the second transmission angle.