Electrically-tunable optical zoom system by using liquid crystal lenses

Yi-Hsin Lin; Ming-Syuan Chen; Hung-Chun Lin

doi:10.1117/12.912063

6 February 2012 Electrically-tunable optical zoom system by using liquid crystal lenses

Yi-Hsin Lin, Ming-Syuan Chen, Hung-Chun Lin

Proceedings Volume 8280, Advances in Display Technologies II; 82800Q (2012) https://doi.org/10.1117/12.912063
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

An electrically-tunable optical zoom system using liquid crystal (LC) lenses is demonstrated. The mechanism of the optical zoom system is to use two lenses and a camera system to achieve focusing and zooming function. In this paper, we analyzed the imaging conditions and the magnification of the optical zoom system. The relation between the focusing properties of LC lenses and zoom ratio of the optical zoom system is also discussed. The electrically-tunable optical zoom system using two LC lenses has high zoom ratio (~7.9:1 to ~5.5:1), short system length (<10 cm) and the object can be zoomed in or zoomed out continuously at the objective distance of infinity to 10 cm. The potential applications are cell phones, cameras, telescopes and pico projectors.

Citation Download Citation

Yi-Hsin Lin, Ming-Syuan Chen, and Hung-Chun Lin "Electrically-tunable optical zoom system by using liquid crystal lenses", Proc. SPIE 8280, Advances in Display Technologies II, 82800Q (6 February 2012); https://doi.org/10.1117/12.912063

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