The analyze and design of focusing system for space camera

摘要

In order to control the focal plane and guarantee the imaging quality of space camera,the focusing system was proposed.Firstly,the reasons of defocusing were analyzed and a solution method was given.Secondly,the system structure and operating principle were introduced.Thirdly,the system design was presented in detail.Finally,the system was experimented.Experimental results indicate that the defocusing amount of camera can be controlled below 10 um and the focusing system satisfies the requirement of system design.