Supporting structure of ultra-light micro-crystal reflector, reflector assembly and assembling method

The invention provides a supporting structure, a reflector assembly and an assembling method of an ultra-light microcrystal reflector, the supporting structure comprises a reflector frame and three groups of flexible supporting assemblies which are uniformly distributed, and the reflector frame supports the reflector; the flexible supporting assembly fixes the reflecting mirror frame to the main force bearing structure. The reflector adopts a main rib and sub-rib combined and crossed lightweight form, so that limit weight reduction is realized, the support rigidity of the mirror surface is increased, the grid effect is avoided, and the defects that the weight of the mirror body is increased due to over-dense arrangement of single-height lightweight ribs and the optical processing grid effect is increased due to over-sparse arrangement are overcome. A glue injection structure is designed on the flexible supporting assembly, the influence caused by the assembly position and angle tolerance of the support is mad