Instrumentation, Techniques, and Measurement

Design of a variable diffractive zoom lens for interferometric purposes

[+] Author Affiliations
Alexander Bielke, Christof Pruss, Wolfgang Osten

University of Stuttgart, Institut für Technische Optik, Pfaffenwaldring 9, 70569 Stuttgart, Germany

Opt. Eng. 56(1), 014104 (Jan 09, 2017). doi:10.1117/1.OE.56.1.014104
History: Received October 27, 2016; Accepted December 13, 2016
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Abstract.  We present the design of a compact zoom-lens for the realization of a space-limited interferometer objective with a large range of possible sphere radii. Based on the idea of Alvarez to change the lens-power by shifting two glass plates with cubic surface functions along their lateral axis and the implementation with diffractive optical elements by Lohmann, we realized a focal shift between 200 and 360 mm with two elements in a single shift setup. Additionally, astigmatism can be compensated by moving the plates in the related orthogonal direction as required for the measurement of anamorphic, aspheric, or freeform lenses.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Alexander Bielke ; Christof Pruss and Wolfgang Osten
"Design of a variable diffractive zoom lens for interferometric purposes", Opt. Eng. 56(1), 014104 (Jan 09, 2017). ; http://dx.doi.org/10.1117/1.OE.56.1.014104


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