| 20100027030 | ANGULAR DISPLACEMENT SENSOR - A device for measuring angular displacement, including a light emitter and a light receiver, which are angularly rotatable relative to each other, wherein the light receiver includes light-sensitive pixels arranged in a pattern on a chip surface, on which light emitted by or via the light emitter is incident in dependence on the aforesaid angle of rotation, and wherein the pattern at least forms part of a circular arc pattern. The device does not make exacting demands on the precision with which the light emitter and the light receiver rotate relative to each other, whilst an accurate end result is obtained by a compact device that can be produced at lower cost. | 02-04-2010 |
