The membrane mirror stretched with electrostatic is the new technique developed in recent years

and membrane mirror is very light

good flexibility and Collapsible

it will be used widely in space. membrane mirror was sharped by coulomb force in field of electrostatic

which radius is decided by the distributing of electrostatic field. It is very complexity of membrane transfiguration force and the electrostatic field theory

so there is much work to do about the control theory and technique on membrane mirror. Based on the Research of shaping Stretched Membrane with Electrostatic Curvature Mirrors

the support structure of membrane mirror and control circuit were designed

and the focus was measured by knife-edge. The result is membrane mirror was stretched in 10000V high voltage and it’s focus is about 2.1m

the PV value is 11.14λ

the RMS value is 11.14λ. The following work will be improving the holding structure and using better performance membrane in order to get better surface precision.