9 January 2017 Design of a variable diffractive zoom lens for interferometric purposes
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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.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Alexander Bielke, Alexander Bielke, Christof Pruss, Christof Pruss, Wolfgang Osten, Wolfgang Osten, } "Design of a variable diffractive zoom lens for interferometric purposes," Optical Engineering 56(1), 014104 (9 January 2017). https://doi.org/10.1117/1.OE.56.1.014104 . Submission: Received: 27 October 2016; Accepted: 13 December 2016
Received: 27 October 2016; Accepted: 13 December 2016; Published: 9 January 2017
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