OPTICAL SENSOR

WIPO Patent Application WO/2021/100261

A1

An optical sensor (1) according to the present invention detects the proximity of an object (5) according to light-reception results, with respect to light. The optical sensor is provided with a light source (21), a light-receiving unit (22) and a protruding part (13). The light source emits light (L1) onto the object. The light-receiving unit receives reflected light (L2) which is the emitted light reflected off of the object, and thereby generates a signal that indicates light-reception results. The protruding part is taller than the light source and the light-receiving unit. The protruding part is disposed between the light source and the light-receiving unit such that if the light from the light source was reflected within a prescribed distance (D1) range from the protruding part, that reflected light is blocked from the light-receiving unit. In response to the approach of the object which has reached within the range of the prescribed distance, the light-receiving unit outputs a signal so as to indicate light-reception results that are below a threshold amount of light indicating that the reflected light has not been received.

WATANABE HIROSHI (JP)
SUGAHARA KOHEI (JP)
KATO TAKATOSHI (JP)

PCT/JP2020/030070

May 27, 2021

August 05, 2020

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MURATA MANUFACTURING CO (JP)

G01V8/12; G01L5/16

WO2014045685A1

2014-03-27

US20140103199A1	2014-04-17
US20190341518A1	2019-11-07
JP2011525239A	2011-09-15
JP2015525478A	2015-09-03
US20170297206A1	2017-10-19
JP2010539474A	2010-12-16

YAMAO, Norihito et al. (JP)

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