APPARATUS AND ITS METHOD FOR OPTICAL ALIGNMENT OF THE DEPLOYABLE OPTICAL STRUCTURE MOUNTED ON A SATELLITE

摘要

The present invention comprises: a barrel (10) having a main mirror (12), a subordinate mirror (13) and a focal surface part (20); multiple stages constituting the focal surface part (20) having an image sensor mounted (15) thereon; a drive part (30) conducting three-axis motion with respect to each of the stages; a subordinate mirror part (40) conducting the two-axis motion of the subordinate mirror (13); and a control means for controlling the drive part (30) by detecting the motion displacement of each of the stages. The method for optical alignment of a deployable optical structure including the control means drives the Z-axis stages of the subordinate mirror part and the focal surface part (and the X-axis stage and the Y-axis stage if an optical axis needs to be aligned in the middle) to adjust the alignment state of the main mirror, the subordinate mirror and the focal surface part. Accordingly, in a high-resolution deployable optical structure mounted on a satellite, the quality of images can be improved by instrumentally correcting modification caused by an alignment error after modification caused by an external force during launching, modification caused by a change in temperature and deployment in an orbit.