Abstract

In traditional optical design, a starting point is selected and coefficients optimization is then performed using software. The process requires considerable time and the involvement of a human with design skills and experience. In this Letter, a fast automatic method for freeform imaging systems design is proposed. Using a plane system as the input, a freeform optical system with high image quality can be designed automatically at high speed. The method consists of system construction and system correction, combining the advantages of the direct design method and the methods based on aberration analysis. After system construction generates a system with fundamental optical parameters, system correction is an iterative process that alternates between image plane correction and surfaces correction to improve the image quality to a high level. Two examples required 5 min 56 s and 6 min 10 s to design freeform systems with near-diffraction-limit image quality.

© 2020 Optical Society of America

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