A new dual focal point electro-optic lens that is switchable to focusing and unfocusing is proposed and successfully demonstrated. This electro-optic lens is constructed by coating transparent fine electrodes in the Fresnel-zone plate onto a PLZT ceramic plate. Its focal length changes from 1.25 m to binary at 515 nm with the external voltage of 210 V.
© 1992 Optical Society of America
Original Manuscript: December 27, 1990
Published: May 20, 1992
Tsuyoshi Tatebayashi, Takashi Yamamoto, and Heihachi Sato, "Dual focal point electro-optic lens with a Fresnel-zone plate on a PLZT ceramic," Appl. Opt. 31, 2770-2775 (1992)