Mirror lightweight, for applications, the astronomical in particular, and for the production of the said mirror

摘要

Mirror lightweight comprising a framework structure particular. / p & & p & the framework 3 is constituted by flat pieces and or of tube 4, 9, joined by a mass sintered 11 comprising the open pores. During the production of the frame, this mass has sintering is introduced into the interstices between the flat pieces and or similar tubular, and then reach with these pieces is the temperature of sintering in a non-oxidizing atmosphere. A layer 14 may be provided for sintered on the face of the plates before 1 and or back 2 of the mirror lightweight facing the framework 3. The small bars of the stiffeners 13 may be incorporated sintered to the layer 14.