Design of heat optics vacuum bench with multi-freedom

Aiming at structure characteristics of camera developing in some project and the complexity of space environment, the camera thermal vacuum optical experiments are fulfilled prior to launch, in order to obtain the law of the thermal optical focusing, to check the correctness of the integrated simulation model, test input and boundary conditions. Space thermal vacuum environment is so simulated on the ground. As the environmental conditions of the vacuum tank for the camera is not conducive to staff to operate. The development of vacuum thermal optical bench is very important, to achieve the convenient adjustment of the camera posture in a vacuum tank. Some parameters of bench were calculated. The grating scale or encoder was adopted to achieve closed-loop control. The vacuum grease for lubrication of low volatile was adopted. The bench rotation accuracy is 6. Mobile accuracy is 0.02 mm. The bench accuracy can meet camera experiment adjustment requirements. Thermal optical vacuum test platform is not only able to complete the requirements of the camera thermal optical experiments, but also to save experimental time in significantly and improve the experimental efficiency, favorable to ensure the successful completion of the camera experiment.