Abstract: The systems for inspecting an optical wave surface output from an optical device, the optical device comprising an output pupil, the inspection system comprising an optical measurement head and a computer for processing the images obtained from the optical measurement head. The optical measurement head comprises: a density gradient filter, the density varying periodically in the two directions of the space, a matrix array comprising at least four identical lenses, of square form, of the same focal length and disposed symmetrically, a matrix of photodetectors, each of the four lenses forming, of the pupil, an image in the plane of this matrix. The computer for processing the images comprises computation means that make it possible to calculate the partial derivatives ? ? ? x x , y and ? ? ? y x , y and of the wave surface ?(x, y) in the plane of the output pupil.

Abstract: Systems for inspecting a surface of an optical wave originating from an optical device are provided. The optical device includes an exit pupil, and the inspection system includes an optical measuring head and a computer for processing the images from said optical measuring head. The optical measuring head includes a density gradient filter, the density varying periodically in the two directions in space, a matrix frame having at least four identical lenses of square shape of the same focal length and being arranged symmetrically, and a photodetector array, each of the four lenses forming an image of the pupil in the plane of this array. The image processing computer includes computing means for computing the partial derivatives ? ? ? x ? ( x , y ) and ? ? ? y ? ( x , y ) of the wave surface ?(x, y) in the plane of the exit pupil.

Abstract: Systems for inspecting a surface of an optical wave originating from an optical device are provided. The optical device includes an exit pupil, and the inspection system includes an optical measuring head and a computer for processing the images from said optical measuring head. The optical measuring head includes a density gradient filter, the density varying periodically in the two directions in space, a matrix frame having at least four identical lenses of square shape of the same focal length and being arranged symmetrically, and a photodetector array, each of the four lenses forming an image of the pupil in the plane of this array. The image processing computer includes computing means for computing the partial derivatives ? ? ? x ? ( x , y ) and ? ? ? y ? ( x , y ) of the wave surface ?(x, y) in the plane of the exit pupil.