Patent ID: 7525666
Filing Date: 2009-04-28
Classification: G01B,G02B

Abstract:
1. An interferometric measuring device, for measuring a surface shape of an object, comprising: a radiation source to emit a short coherent electromagnetic radiation; a beam splitter to form an object beam which is directed via an object light path to the object, and a reference beam which is directed via a reference light path to a reference plane; a pickup element by which electromagnetic radiation reflected by the object and a reference plane and brought to interference is able to be picked up; and at least one adaptive optical element by which at least one of an imaging of the object on the pickup element, a wave front of the reference beam, and an optical path length in the reference light path, and the object light path may be influenced; the at least one adaptive optical element including at least one lens; and at least one of the adaptive optical elements being situated between the pickup element and an ocular lens.