Patent ID: 6424411
Filing Date: 2002-07-23
Classification: G01B

Abstract:
An optical installation for determining relative positions of at least two objects, said optical installation comprising:at least two optical systems being moveable with respect to each other, each optical system of said at least two optical systems being associated with an observation frame and being adapted to determine a position of an object of the at least two objects with respect to its observation frame based on an image of the object captured by said optical system, wherein at least one optical system of said at least two optical systems is an optical reference system comprising a set of reference points of a known geometrical configuration, said set of reference points being secured to said optical reference system and immobilized in a known position with respect to the observation frame of said optical reference system, wherein said set of reference points is visible to at least one other optical system of said at least two optical systems in the absence of the at least two objects, wherein said at least one other optical system comprises: means for analyzing an image of said set of reference points, means for positioning said set of reference points with respect to the observation frame of said at least one other optical system, and means for deducing a position of the observation frame of said at least one other optical system with respect to the observation frame of said optical reference system based on the position of said set of reference points with respect to the observation frame of said at least one other optical system and the known position of said set of reference points with respect to the reference frame of said optical reference system.