27 October 2017 Miniaturized variable-focus objective employing a liquid-filled tunable aspherical lens
Author Affiliations +
Optical Engineering, 56(10), 103110 (2017). doi:10.1117/1.OE.56.10.103110
We discuss the design, realization, and characterization of a miniaturized focus-tunable camera objective featuring a gravity-neutral, liquid-tunable aspherical lens and compare its performance to an equivalent system optimized for a conventional tunable lens. In addition to the innovative component, the objective design features three fixed elements and an aperture, which are all assembled to form a 5 × 5 × 13    mm system. With an image sensor size of 3 mm, the objective provides a viewing angle of 40 deg. By tuning the lens in its gravity-neutral range, the object distance can be shifted from 5 mm to infinity, with image-side cutoff frequency remaining above 84    lp / mm across the entire range. Through ray-tracing simulations and experimental results, we demonstrate that for optical trains of identical complexity, tunable aspherical lenses provide substantially better imaging quality over the object distance range of interest, compared to conventional, spherical tunable lenses.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Pengpeng Zhao, Çaglar Ataman, Hans Zappe, "Miniaturized variable-focus objective employing a liquid-filled tunable aspherical lens," Optical Engineering 56(10), 103110 (27 October 2017). https://doi.org/10.1117/1.OE.56.10.103110 Submission: Received 27 July 2017; Accepted 2 October 2017
Submission: Received 27 July 2017; Accepted 2 October 2017


Modulation transfer functions


Aspheric lenses

Imaging systems

Monte Carlo methods

Optical spheres


A Statistical Approach To Lens Tolerancing
Proceedings of SPIE (December 01 1978)
Design of null tests for an F 0.8 concave oblate...
Proceedings of SPIE (October 11 2010)
An infrared modular panoramic imaging objective
Proceedings of SPIE (August 30 2004)
Random thoughts on Monte Carlo tolerancing
Proceedings of SPIE (September 21 2007)

Back to Top