Opto-Mechanical Structure Design Of Optical Parameter Detector For Telescope

As an important optical system,telescopes have been used in many fields,such as weaponry,astronomical observation and precision measurement,and play a major role in observing and targeting distant targets.The first step in evaluating the imaging quality of a telescope is to measure its optical parameters.Currently,the detection telescopes used in national standards are mostly single parameter detection devices,and some equipment needs to be observed with the human eye.There are problems such as low automation of detection,large measurement errors,scattered equipment,and cumbersome measurement steps.In order to improve measurement accuracy and efficiency,as well as enhance the automation of the measurement process,a set of detection instruments for integrated detection of multiple optical parameters of telescopes has been designed to achieve the measurement of multiple optical parameters such as sight-line alteration,modulation transfer function,and field of view of optical telescopesThe telescope optical parameter detector mainly consists of a collimator,a camera imaging system,a camera three-dimensional adjustment mechanism,a product threedimensional adjustment mechanism,and a support base.Target switching device is used to switch different detection targets in turn to achieve the measurement of multiple optical parameters,so as to improve the efficiency and automation of measurement.The use of COMS cameras instead of human eye interpretation to obtain images of the telescope eyepiece improves measurement accuracy while ensuring objectivity.The accuracy analysis of optical parameters such as magnification,diopter,optical parallax and field-of-view of the measuring Telescope shows that the telescope optical parameter detector has relatively high measurement accuracy in detecting the magnification,diopter,optical parallax and field-of-view of the telescope,and can meet the requirements of high-precision detection of the system.The mechanical performance simulation and opticalmechanical thermal integrated analysis of the optical-mechanical structure of the telescope optical parameter detector show that the first-order frequencies of the core components are greater than 254 Hz,which has good structural stability.Under the thermal-mechanical coupling,the optical system still shows a good image quality.The simulation results verify the rationality of the system structure design.