US 12,411,214 B2
Limited reflection type sensor
Naoya Kakimoto, Ichinomiya (JP); Jun Nakajima, Ichinomiya (JP); and Asuka Tada, Kyoto (JP)
Assigned to OMRON Corporation, Kyoto (JP)
Appl. No. 16/979,222
Filed by OMRON Corporation, Kyoto (JP)
PCT Filed Jan. 21, 2019, PCT No. PCT/JP2019/001583
§ 371(c)(1), (2) Date Sep. 9, 2020,
PCT Pub. No. WO2019/176284, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 2018-045443 (JP), filed on Mar. 13, 2018.
Prior Publication US 2020/0400786 A1, Dec. 24, 2020
Int. Cl. G01S 7/48 (2006.01); G01S 7/481 (2006.01); H05K 5/02 (2006.01); H05K 5/03 (2006.01)
CPC G01S 7/4813 (2013.01) [H05K 5/0221 (2013.01); H05K 5/0247 (2013.01); H05K 5/03 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A limited reflection type sensor which irradiates exit light from a light emitting unit toward an object sensing region through an exit light lens and receives, at a light receiving unit, reflected light from an object existing in the object sensing region through a reflected light lens, the limited reflection type sensor comprising:
a casing comprising a latching portion formed on a side surface and a first opening facing the object sensing region, the casing accommodating the light emitting unit and the light receiving unit; and
a lens part comprising a light incident/exit part formed integrally with the exit light lens and the reflected light lens, and a side surface covering part in which an end of the light incident/exit part is extended along the side surface, wherein
the lens part covers the first opening with the light incident/exit part, and the side surface covering part is latched by the latching portion,
the side surface covering part extends from the end of the light incident/exit part, is formed as a single piece, and forms the outermost part of the lens part, and
the casing comprises a guide groove that guides the side covering portion, the guide groove is arranged on the side surface of the casing, and the guide groove has approximately the same width and length as the side covering portion.