Electrically Controllable Liquid Crystal Fresnel Lens

G. Williams; N. J. Powell; A. Purvis; M. G. Clark

doi:10.1117/12.962998

22 December 1989 Electrically Controllable Liquid Crystal Fresnel Lens

G. Williams, N. J. Powell, A. Purvis, M. G. Clark

Proceedings Volume 1168, Current Developments in Optical Engineering and Commercial Optics; (1989) https://doi.org/10.1117/12.962998
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

Two orthogonally aligned liquid crystal lenses with spherical Fresnel zone plate electrode configurations have been demonstrated to focus an unpolarised broadband object with resulting good quality images. Switch on times of 15ms are reported along with modulation depths of 91.5%.

Citation Download Citation

G. Williams, N. J. Powell, A. Purvis, and M. G. Clark "Electrically Controllable Liquid Crystal Fresnel Lens", Proc. SPIE 1168, Current Developments in Optical Engineering and Commercial Optics, (22 December 1989); https://doi.org/10.1117/12.962998

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