Focal length evaluation by inverse ray-tracing Ronchi test

Rigoberto Juarez-Salazar, Gerardo Diaz-Gonzalez,Carlos Robledo-Sanchez

Proceedings of SPIE（2016）

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摘要

A simple method to evaluate the focal length of concave mirrors is proposed. The inverse ray-tracing approach of the Ronchi test is used in the measurement stage. The theoretical principles are given and a numerical method for ronchigram processing is proposed. The results verify the feasibility of the proposal.

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关键词

Focal length,Ronchi test,inverse ray-tracing,calibration,phase demoditlation

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