| With the continuous update of science and technology,optical components are widely used in aerospace reconnaissance,marine survey,topographic surveying,and other industries.At present,the development direction of optical components is moving in the direction of high precision,miniaturization,large field of view,and integration.This puts forward higher requirements for the design and manufacture of optical components.To obtain high-precision optical components,a large number of scholars and researchers have done in-depth investigations and studies on the design,processing,and manufacturing of optical components.The traditional optical system is to carry out the unified assembly and debugging after finishing the various sub-elements of the optical system,which requires a lot of personnel and time to install and adjust,while the common optical element is to arrange the optical system according to the discharge sequence required by the design.The semi-finished blanks of each sub-element are installed on the base frame to perform integrated processing on the assembly.This integrated optical system component is called a common optical element,and the common optical system elements that can be integrated processed is generally for the off-axis reflective optical system,the advantage of the common optical element is that the off-axis reflective element can be integrated and finished,which eliminates the subsequent tedious assembly and adjustment process,improves the molding efficiency of the product,and realizes the integrated processing.This thesis takes the common optical element as the research object,carries on the design,parameter calculation,and structural configuration of the common optical element,and uses computer software to simulate the polishing of the optical element from the microscopic and macroscopic angles.The specific research content of the thesis is as follows:(1)The PW method based on aberration parameters calculates the initial structure of the common optical element(coaxial four-reflection structure),finds the appropriate geometric size relationship,and builds a more compact coaxial four-reflection structure,and uses different evaluation methods to compare The initial structure of the coaxial four-reflection optical system is evaluated for imaging quality,and the initial structure is evaluated and analyzed according to the evaluation criteria of the evaluation index.(2)For the off-axis processing of the initial structure of the common body optical element,the required off-axis reflection system is optimized by using appropriate methods.The basic parameters of the model of the off-axis four-reflector system are generated by software optimization.The model of the off-axis four-reflector system is constructed by using the basic parameters to generate the model of the common body optical element.The mechanical structure of the optical element is analyzed.(3)From a microscopic point of view,study the simulation of the polishing process of the common body optical element with the introduction of axial ultrasonic vibration,analyze the movement trajectory of a single abrasive particle,and study the effect of different types of polishing abrasive particles on the surface of the workpiece under the microscopic angle.The effect of different polishing process parameters:the impact of amplitude,particle size,and speed on the polishing effect are studied through the establishment of simulation.(4)Through the establishment of the geometric model of the CNC polishing machine tool from the macro perspective,and the virtual machining simulation of the integrated polishing of the common optical element,it can be verified whether the designed common optical element meets the actual processing requirements,and the simulation of the polishing process Whether there will be interference and collision problems in the process,etc.,analyze and discuss the correctness of the optical component design and the feasibility of achieving integrated polishing. |
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