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Optical designs for astronomy involve implementation of active optics and adaptive optics from X-ray to the infrared. Developments and results of active optics methods for telescopes, spectrographs and coronagraph planet finders are presented. The high accuracy and remarkable smoothness of surfaces generated by active optics methods also allow elaborating new optical design types with high aspheric...
Multimode deformable mirrors allow to superpose optics aberration modes up to high orders. The elasticity analysis leads to consider mainly Clebsch–Zernike modes that belong to a sub-class of optics modes. Theoretical results and associated geometries are also derived for some single modes. This allows discovering degenerated configurations using a minimal set of applied external forces. We present...
The flexure of cantilevers is one of the early problems, if not the first, to have been studied by the elasticity theoreticians. One considers axisymmetrical rods and rectangular section beams. This investigation concerns the case where the maximum stress is constant (Galilei-Euler-Clebsch problem) as well as the case where the curvature of the medium fiber is constant. For both cases, it is shown...
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