US 11,867,494 B2
Optical displacement sensor
Daiki Matsumoto, Osaka (JP); and Choryon Oh, Osaka (JP)
Assigned to KEYENCE CORPORATION, Osaka (JP)
Filed by Keyence Corporation, Osaka (JP)
Filed on Mar. 9, 2021, as Appl. No. 17/195,690.
Claims priority of application No. 2020-071365 (JP), filed on Apr. 10, 2020.
Prior Publication US 2021/0318115 A1, Oct. 14, 2021
Int. Cl. G01B 11/02 (2006.01); G01B 11/14 (2006.01); G01S 7/481 (2006.01); G01S 7/51 (2006.01); G01S 17/08 (2006.01)
CPC G01B 11/026 (2013.01) [G01B 11/14 (2013.01); G01S 7/4813 (2013.01); G01S 7/51 (2013.01); G01S 17/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An optical displacement sensor comprising:
a first housing including a transmission window that transmits light;
a light projector that is provided in the first housing and projects measurement light toward a detection region through the transmission window;
a light receiver that is provided in the first housing and performs photoelectric conversion on the measurement light from the detection region through the transmission window to generate a light receiving signal;
a processor that is provided in the first housing and measures displacement of a to-be-detected object on the basis of the light receiving signal generated by the light receiver;
a second housing that has a waterproof structure and an elongated outer shape having a first end and a second end along a longitudinal direction, and four side surfaces around a first axis along the longitudinal direction, and includes at least a first power supply circuit that supplies power and the second housing further includes a receiving circuit that receives measurement information generated by the processor in the first housing;
a display disposed on a first surface of the four side surfaces, configured to display numerical information of the displacement on the basis of the measurement information received by the receiving circuit;
an operation user interface disposed on a second surface of the four side surfaces, for use in setting a determination threshold, the second surface adjacent to the first surface around the first axis; and
a cable that connects between the first housing and the second housing, and transmits power to the light projector, the light receiver, and the processor in the first housing,
wherein one end of the cable is disposed in the first housing and the other end of the cable is disposed in the second housing through the first end, and
the display further displays the determination threshold set on the basis of an operation instruction via the operation user interface.