Patent ID: 6724475
Filing Date: 2004-04-20
Classification: G01B,G01N

Abstract:
An apparatus for measuring angle-dependent diffraction effects, comprising:a coherent radiation source producing coherent radiation; a device for deflecting rays of the coherent radiation in different directions; a concentric mirror having an axis of symmetry and a centerpoint, said concentric mirror reflecting the rays arriving differently and sequentially one after the other from said device for deflecting the coherent radiation to a focal point; a detector unit for measuring the intensity of the radiation diffracted by a specimen having a measuring point located at the focal point; said device for deflecting the coherent beam being situated on said axis of symmetry of said concentric mirror; and the measuring point on the specimen being disposed on said axis of symmetry of said concentric mirror symmetrically and equidistantly from said center point of said concentric mirror as said device for deflecting the coherent beam.