公开(公告)号：US10928701B2

公开(公告)日：2021-02-23

申请号：US16077762

申请日：2017-02-22

Applicant: KENT STATE UNIVERSITY ,  INTEL CORPORATION

Inventor： Hsien-Hui Cheng ,  Philip Bos ,  Achintya Bhowmik

IPC: G02F1/31 ,  G02F1/03 ,  G02B27/28 ,  G02B26/08 ,  G02F1/01 ,  G02F1/29

Abstract: 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° over the thickness of each Pancharatnam layer, and more preferably at least 75°, and still more preferably at least 90°, 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.

公开(公告)号：US20190056636A1

公开(公告)日：2019-02-21

申请号：US16077762

申请日：2017-02-22

Applicant: KENT STATE UNIVERSITY ,  INTEL CORPORATION

Inventor： Hsien-Hui Cheng ,  Philip Bos ,  Achintya Bhowmik

IPC: G02F1/31

Abstract: 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° over the thickness of each Pancharatnam layer, and more preferably at least 75°, and still more preferably at least 90°, 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.

公开(公告)号：US20180129018A1

公开(公告)日：2018-05-10

申请号：US15561288

申请日：2016-03-25

Applicant: Kent State University ,  Intel Corporation

Inventor： Hsien-Hui Cheng ,  Philip Bos ,  Achintya Bhowmik

IPC: G02B13/00 ,  G02B5/30 ,  G02B27/28

CPC classification number: G02B13/009 ,  G02B5/3008 ,  G02B5/3083 ,  G02B27/286

Abstract: 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.

公开(公告)号：US20240176141A1

公开(公告)日：2024-05-30

申请号：US18519643

申请日：2023-11-27

Applicant: KENT STATE UNIVERSITY

Inventor： Fenglin Xi ,  Philip Bos ,  Hsien-Hui Cheng ,  Lu Lu

IPC: G02B27/01 ,  G02B27/10

CPC classification number: G02B27/0103 ,  G02B27/0179 ,  G02B27/1006 ,  G02B2027/0187

Abstract: An optical combiner includes first, second, and third polarization volume holograms (PVHs) configured to deflect light of a first color, a second color, and a third color, respectively. The optical combiner further includes a first polarization interference filter (PIF) configured to switch light of the first color from a polarization that is not deflected by the first PVH to a polarization that is deflected by the first PVH. The optical combiner may further include a second PIF configured to switch light of the second color from a polarization that is not deflected by the second PVH to a polarization that is deflected by the second PVH. The optical combiner may further include a third PIF configured to switch light of the third color from a polarization that is not deflected by the third PVH to a polarization that is deflected by the third PVH.