26 April 2018 Optical zoom system realized by lateral shift of Alvarez freeform lenses
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Abstract
We present and characterize an optical zoom system with lateral movement of an Alvarez freeform lens for imaging. Mathematical analysis for determining the required freeform surfaces is presented, and optical simulations are performed to confirm and refine the expected zooming behavior. A 3  ×   optical zoom system that was equivalent to a photographic objective lens with focal length ranging from 34.5 to 103.5 mm and field of view ranging from 60 deg to 22.4 deg is developed by using two pairs of Alvarez lenses and conventional aspheric lenses. The optical performances of the Alvarez zoom system are demonstrated experimentally.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Changlun Hou, Changlun Hou, Qing Xin, Qing Xin, Yue Zang, Yue Zang, } "Optical zoom system realized by lateral shift of Alvarez freeform lenses," Optical Engineering 57(4), 045103 (26 April 2018). https://doi.org/10.1117/1.OE.57.4.045103 . Submission: Received: 26 November 2017; Accepted: 10 April 2018
Received: 26 November 2017; Accepted: 10 April 2018; Published: 26 April 2018
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