Patent ID: 9476978
Filing Date: 2016-10-25
CPC Classification: B60J,G01J,G01S,H01L

Claim Text:
1. A photosensor unit configured such that reflected light of detection light emitted from one or more light emitting elements housed in a unit case to an outside of the unit case is detected with a light receiving element mounted on a mounting board, the reflected light being reflected from a detection region set on the outside of the unit case, wherein a passage space for the reflected light inside the unit case is separated from another space in the unit case by a partition member placed on the mounting board with an annular packing therebetween which surrounds the light receiving element and is made of an elastic material, and the partition member is provided with a pressing wall configured to come into pressure contact with an outer peripheral wall of the annular packing when the partition member is placed on the mounting board, and thereby apply pressure contact force to the annular packing while dividing the pressure contact force in a radially compressing direction, the pressure contact force being force with which the annular packing comes into contact with the mounting board.