Seiko Precision Inc.

Hitoshi Ito

Hajime Oda

Osamu Takano

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.

Object sensing apparatus having filter member

An electrostatic sensor comprises a ground electrode defining an enclosure having a through-hole for permitting the passage of a body therethrough. A sensor electrode is disposed in the ground electrode. A detecting circuit is disposed in the ground electrode for detecting the passage of the body through the through-hole on the basis of a change in an electrostatic capacitance between the ground electrode and the sensor electrode.

Growing community of inventors

Yotsukaida, Japan

Hitoshi Ito