Kent State University

Hsien-Hui Cheng

Achintya K Bhowmik

Philip J Bos

Kun Gao

Colin P McGinty

An optical beam deflection device includes a dual-twist Pancharatnam phase device (DTPPD) with first and second Pancharatnam layers each with an in-plane twist and a transverse twist that is at least 60&#xb0; over the thickness of each Pancharatnam layer, and more preferably at least 75&#xb0;, and still more preferably at least 90&#xb0;, with the twist sense of the second Pancharatnam layer being opposite the twist sense of the first Pancharatnam layer. To provide switchable beam deflection, an electro-optic polarization element inputs a circularly polarized light beam to the DTPPD with left-handed circular polarization or right-handed circular polarization controlled by an electrical input.

Large angle image steering device

An optical magnification system comprises two Pancharatnam lenses, and provides a first magnification for left-hand circularly polarized light and a second magnification different from the first magnification for right-hand circularly polarized light. An optical magnification system comprises two lenses, each having different focal lengths for left-handed and right-handed circularly polarized light, respectively, and configured to provide a first magnification for left-handed circularly polarized light and a second magnification different from the first magnification for right-handed circularly polarized light.

Growing community of inventors

San Jose, CA, United States of America

Hsien-Hui Cheng