Active optics and the non-axisymmetric case: multimode deformable mirrors aspherized from vase and meniscus forms

The realizations of non-axisymmetric aspherical surfaces is of rapid growing interest for the development of segmented ELTs and astronomical instrumentation. Active Optics methods have already proved useful for the aspherization of off-axis segments of a paraboloid. The analogy between optical aberration modes and elastic deformation modes leads to consider Clebsch-Zernike modes that belongs to a subclass of aberration modes and are available up to high-order optical corrections. The meniscus form as well as the vase form allow the coaddition of these modes. Several loading configurations associated to bending moments are presented including interferometric results for coadditions with multimode deformable mirrors -- MDMs -- and for some monomode mirrors with bending moments geenrated by a single force distribution. Active Optics methods are also under development for the Axisymmetric Case with vases and meniscuses (cf. this Conference).