From Event: SPIE Optical Engineering + Applications, 2016
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.
Rigoberto Juarez-Salazar, Gerardo Diaz-Gonzalez, and Carlos Robledo-Sánchez, "Focal length evaluation by inverse ray-tracing Ronchi test," Proc. SPIE 9970, Optics and Photonics for Information Processing X, 99700D (Presented at SPIE Optical Engineering + Applications: August 29, 2016; Published: 14 September 2016); https://doi.org/10.1117/12.2238306.
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