Axially asymmetric optical systems treated in this paper contain both freeform surfaces and spheres. In these systems, freeform surfaces need to be allocated at the most effective position. The problem can be elegantly solved with the method of traveling freeform surfaces. The purpose of this paper is to show that the sensitivity control can be included in this design process.
About the author
Akira Yabe received his BSc in Physics from Tokyo University in 1978. He worked for Fuji Photo Optical (1978–2003). He is a lens design consultant (2004–). His experience of lens design ranges from the cinematography zoom lens to the microlithography lens. He works with his own lens design code. He has unique methods of the optical design, such as prototyping of zoom lenses, global optimization, optimal selection of aspheric surfaces, accurate glass model and cost control, sensitivity control, and determination of tolerances.
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