Method for solving initial structure of coaxial reflective optical system based on particle swarm optimization

Abstract

The invention discloses a method for solving an initial structure of a coaxial reflective optical system based on a particle swarm algorithm, which relates to the technical field of optical design. The method comprises the following steps of 1, determining a coaxial reflective optical system of a to-be-solved initial structure and corresponding to-be-solved basic structure parameters according to application requirements, and 2, solving to-be-solved basic structure parameters by using a particle swarm algorithm, and further obtaining an initial structure of the coaxial reflective optical system. The particle swarm optimization is used as a tool, the weighted sum of five geometric aberrations of the reflective optical system is used as an evaluation criterion, an initial structure design process of the coaxial reflective optical system is converted into a process for solving a globally optimal solution of an evaluation function of the coaxial reflective optical system, and complicated algebraic calculation and later debugging are not needed. The same optimal structure parameters can be directly obtained, the optical structure of the obtained coaxial reflective optical system is compact, the imaging effect is close to the diffraction limit at the Nyquist frequency, and the design efficiency and reliability are greatly improved.

Description

technical field [0001] The invention relates to the technical field of optical design, in particular to a method for solving the initial structure of a coaxial reflective optical system based on a particle swarm algorithm. Background technique [0002] With the development of space science and technology, its demands in national defense and civilian applications are constantly expanding. The reflective optical system has no chromatic aberration, wide spectral range, flexible design, compact structure, low material requirements and easy acquisition. It is favored as a new development direction of space optical system. [0003] The first step in the design of a reflective optical system is to determine the initial structure of the system. At present, there are two methods commonly used to obtain the initial structure of a reflective optical system: one is the algebraic method, that is, according to the primary aberration theory, the solution meets the primary aberration requir...

AI Technical Summary

Problems solved by technology

However, this method has low adaptability and poor imaging quality, and a large number of structural parameters need to be modified in the later work

Neither the algebraic method nor the scaling method can satisfy the efficiency and adaptability of reflective optical system design

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