Adams & Wilks
Object sensing apparatus having filter member
 An object sensing apparatus comprises a distance measuring device for measuring a distance to an object to be sensed, and a filter member having a surface disposed in confronting and spaced-apart relation to the distance measuring device. The distance measuring device has a light projecting element for projecting light toward the object and a light receiving element for receiving the light projected by the light projecting element and reflected by the object. The filter member is disposed at a preselected angle of inclination with respect to the distance measuring device. When the light projecting element projects light toward the object, light reflected or scattered by the surface of the filter member is directed in a direction away from the light receiving element. 
Seiko Precision Inc.
G G
G01S G01S
inventional inventional
Hitoshi Hajime
Ito Oda