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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 18 — Jun. 20, 2014
  • pp: 4002–4010

Two-channel multiresolution refocusing imaging system using a tunable liquid lens

Lien Smeesters, Gebirie Yizengaw Belay, Heidi Ottevaere, Youri Meuret, Michael Vervaeke, Jürgen Van Erps, and Hugo Thienpont  »View Author Affiliations

Applied Optics, Vol. 53, Issue 18, pp. 4002-4010 (2014)

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Multichannel imaging systems currently feature refocusing capabilities only in bulky and expensive designs. Mechanical movements of the components cannot be integrated in miniaturized designs, preventing classical refocusing mechanisms. To overcome this limitation we developed, as a proof-of-concept (POC) demonstration, a compact low-cost two-channel refocusing imaging system based on a voltage-tunable liquid lens. In addition, the design can be realized with wafer-level manufacturing techniques. One channel of the imaging system enables a wide field of view (FOV) of a scene (2×40°) but with a limited angular resolution (0.078°), while the other channel gives a high angular resolution (0.0098°) image of a small region of interest but with a much narrower FOV (2×7.57°). It is this high-resolution channel that contains the tunable lens and therefore the refocusing capability. A POC demonstration of the proposed two-channel system was built and its performances were measured. Both imaging channels show good overall diffraction-limited image quality.

© 2014 Optical Society of America

OCIS Codes
(110.4190) Imaging systems : Multiple imaging
(220.3620) Optical design and fabrication : Lens system design
(110.1085) Imaging systems : Adaptive imaging
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Imaging Systems

Original Manuscript: February 6, 2014
Revised Manuscript: May 9, 2014
Manuscript Accepted: May 13, 2014
Published: June 18, 2014

Lien Smeesters, Gebirie Yizengaw Belay, Heidi Ottevaere, Youri Meuret, Michael Vervaeke, Jürgen Van Erps, and Hugo Thienpont, "Two-channel multiresolution refocusing imaging system using a tunable liquid lens," Appl. Opt. 53, 4002-4010 (2014)

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