Patent ID: 6034765
Filing Date: 2000-03-07
Classification: G01D,H01L

Abstract:
A contactless position and displacement measuring device including at least one light source and at least one photosensor adapted to move relative to each other, said at least one photosensor being adapted, when illuminated by a light beam emitted by said at least one light source, to generate at least one electrical signal representative of the position of said at least one light source relative to said at least one photosensor which includes a plurality of layers deposited onto a support, and said plurality of layers comprising at least one resistive first layer adapted to form a potentiometer track, at least one photosensitive second layer adapted to deliver electrical charges when illuminated by said light beam emitted by said at least one source and means for collecting said electrical charges generated by said photosensitive second layer; said collecting means comprising at least one metallic third layer adapted to collect said electrical charges generated by said photosensitive second layer.