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METHOD FOR DESIGNING FREEFORM SURFACE OFF-AXIAL THREE-MIRROR IMAGING SYSTEM
METHOD FOR DESIGNING FREEFORM SURFACE OFF-AXIAL THREE-MIRROR IMAGING SYSTEM
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机译:自由曲面离轴三镜面成像系统的设计方法
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摘要
A method of designing an freeform surface off-axial three-mirror imaging system is provided. The method includes: establishing an initial system and T (T≥2) object-image relationships according to a design goal, and selecting M feature fields for each object-image relationship; using feature rays of the T object-image relationships to construct a freeform surface system by using the initial system; step (S3), the freeform surface system obtained in step (S2) is used as another initial system, using iterative process to reduce a deviation between actual intersection points and ideal target points of the feature rays and feature surfaces, iteratively reconstructing free-form surfaces in the free-form surface system.
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