Patent ID: 7268883
Filing Date: 2007-09-11
Classification: G01D

Abstract:
1. An optoelectronic detector system for generating a plurality of periodic, phase-shifted scanning signals from scanning of a periodic fringe pattern that extends in a detection plane with a fringe-pattern period in a fringe-displacement direction, comprising: a plurality of detector elements, a geometrical form of individual detector elements adapted to provide a defined filter of unwanted harmonics from the scanning signal; wherein in one fringe-pattern period, a total number of detector elements of a same non-rectangular geometrical form and of a same geometrical orientation are arranged one immediately after another in the fringe-displacement direction to provide a densest possible arrangement of the individual detector elements, wherein the detector elements are arranged successively such that one detector element is convertible into another detector element by a displacement transformation by a multiple of the fringe-pattern period divided by the total number of detector elements arranged within one fringe-pattern period.