CLOSED LOOP COMPENSATION SYSTEM AND METHOD

摘要

Closed loop compensation for a defopnable mirror having an array of spaced actuators is achieved by: mapping an array of spaced sensors in optical space to reside between pairs of the actuators; focusing sub-apertures of a wavefront from the defopnable mirror onto individual ones of the spaced array of sensors; setting a first actuator to an adjusted stroke position; and adjusting the stroke of subsequent actuators to locate, to a pre-established position, the focused sub-aperture on a sensor in the pathway between each particular subsequent actuator and a neighboring previously adjusted portion of the mirror to compensate for sub-aperture tilt while maintaining relative phase between sub- apertures.