US 12,450,455 B2
Machine vision system and method with hybrid zoom optical assembly
Jose Fernandez Dorado, Vaals (NE); and Laurens Nunnink, Simpelveld (NE)
Assigned to COGNEX CORPORATION, Natick, MA (US)
Appl. No. 18/858,078
Filed by COGNEX CORPORATION, Natick, MA (US)
PCT Filed Apr. 28, 2023, PCT No. PCT/US2023/066413
§ 371(c)(1), (2) Date Oct. 18, 2024,
PCT Pub. No. WO2023/212735, PCT Pub. Date Nov. 2, 2023.
Claims priority of provisional application 63/336,077, filed on Apr. 28, 2022.
Prior Publication US 2025/0278586 A1, Sep. 4, 2025
Int. Cl. G02B 7/09 (2021.01); G02B 26/00 (2006.01); G06K 7/10 (2006.01); G06K 7/14 (2006.01)
CPC G06K 7/10722 (2013.01) [G02B 7/09 (2013.01); G02B 26/004 (2013.01); G06K 7/1413 (2013.01); G06K 7/1417 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A machine vision system comprising:
an image sensor;
an optical assembly comprising:
a lens assembly comprising a plurality of solid lens elements and a liquid lens, wherein the liquid lens includes an adjustable membrane; and
a motor system coupled to the lens assembly and configured to move the lens assembly;
an illumination assembly configured to project a light beam on an object; and
a processor device in communication with the lens assembly and the motor system, the processor device being configured to:
determine a working distance between the object and the lens assembly;
adjust a curvature of the adjustable membrane of the liquid lens based on the working distance; and
adjust, using the motor system, a distance between the lens assembly and the image sensor based on the working distance.