Optoelectronic path-, angle- or rotation-measuring device

摘要

An opto-electronic linear, angular, or rotary position encoder is described. The device includes a light modulating code carrier comprising at least one coded track having adjacent light projecting and light non-projecting portions and an aperture structure disposed in a path of light being modulated by the code carrier. The device further includes a transparent substrate supporting at least one opto-electronic sensor chip facing the aperture structure, wherein the aperture structure is disposed on an aperture platelet, and the aperture platelet is joined to the substrate.