Patent ID: 6661446
Filing Date: 2003-12-09
Classification: G02B

Abstract:
A device for determining a positional deviation of n points, n being a natural number equal to or greater than 2, from n disjunct reference positions of the n points, comprising:a source of electromagnetic radiation; imaging optics for the electromagnetic radiation; and a photosensitive detector receiving the electromagnetic radiation, the electromagnetic radiation when passing through at least a part of the imaging optics forming a light section impinging upon the location of all n points, positional information from the detector being converted into information on intensity, wherein simultaneous or concurrent in time n signals are produced by the detector, each of the n signals being uniquely assigned to one of the n points; wherein the deviation in the position of at least one of the n points from the reference position of the at least one of the n points leads, in a defined relationship, to a different light path than a path of the light reflected from the at least one of the n points, through the imaging optics, into the reference position of the at least one of the n points; the positional information of the at least one of the n points thereby being converted into path information; wherein the imaging optics includes at least one element converting the path information on the light through the imaging optics into information on light intensity.