Patent ID: 8091243
Filing Date: 2012-01-10
Classification: G01B

Abstract:
1. A positioning system for positioning and/or measuring a movable object, wherein, in operational use, the movable object has an object position that is defined with respect to a first axis extending in a first direction and a second axis extending in a second direction, wherein the second direction is different from the first direction, and wherein the movable object has a first surface and a second surface having mutually different orientations, wherein the first surface makes a first angle with the first direction and the second surface makes a second angle with the second direction, the positioning system comprising: a first bearing for establishing a first surface position of the first surface with respect to the first axis and for allowing a movement of the movable object in a first plane parallel to the first surface in at least the second direction; a second bearing for establishing a second surface position of the second surface with respect to the second axis and for allowing a movement of the movable object in a second plane parallel to the second surface in at least the first direction; a first actuator being coupled to the first bearing, wherein the first actuator is for operating in the first direction of the first axis for establishing the first surface position, and a second actuator being coupled to the second bearing, wherein the second actuator is for operating in the second direction of the second axis for establishing the second surface position.