公开(公告)号：EP2972575A4

公开(公告)日：2016-12-07

申请号：EP14764478

申请日：2014-03-12

Applicant: LENSVECTOR INC

Inventor： CLARK PETER ,  GALSTIAN TIGRAN ,  ASATRYAN KAREN ,  PRESNIAKOV VLADIMIR ,  BAGRAMYAN ARAM ,  TORK AMIR ,  ZOHRABYAN ARMEN ,  CAREAU SIMON

IPC: G02F1/29 ,  G02B1/02 ,  G02B1/06 ,  G02B3/12

CPC classification number: G02F1/29 ,  A61F2/16 ,  A61F2210/0076 ,  A61F2210/0085 ,  G02B3/12 ,  G02F1/1313 ,  G02F1/134309 ,  G02F1/13439 ,  G02F2001/294 ,  G02F2201/16 ,  G02F2203/06

Abstract: A liquid crystal optical device is provided including at least two LC cells. A first LC cell layer has a predominant director orientation imparting a transversally non-uniform phase delay to a first polarization of an unpolarized incident light field passing therethrough while incident light of a second polarization orthogonal to the first light polarization passes therethrough undergoing transversally uniform phase delay. The first LC cell is configured to project a center extraordinary ray onto an optical axis of the device at the image surface. A second LC cell layer has a predominant director oriented orthogonally to the other predominant director in a plane perpendicular to the optical axis. The second LC layer imparts a transversally non-uniform phase delay to the second polarization of the incident light passing therethrough, the second LC cell being configured to project a center ordinary ray onto the optical axis at the image surface.

公开(公告)号：EP2917771A4

公开(公告)日：2016-04-27

申请号：EP13852740

申请日：2013-11-12

Applicant: LENSVECTOR INC

Inventor： GALSTIAN TIGRAN ,  PRESNIAKOV VLADIMIR ,  ASATRYAN KAREN ,  TORK AMIR ,  ZOHRABYAN ARMEN ,  BAGRAMYAN ARAM ,  CAREAU SIMON

IPC: G02B1/00 ,  G02B3/12 ,  G02B5/00 ,  G02F1/13 ,  G02F1/29

CPC classification number: G02F1/29 ,  G02B27/646 ,  G02F1/13306 ,  G02F1/133345 ,  G02F1/134309 ,  G02F1/13471 ,  G02F2001/134354 ,  G02F2001/294 ,  G02F2201/128

公开(公告)号：EP2517068A4

公开(公告)日：2013-11-20

申请号：EP10838467

申请日：2010-12-23

Applicant: LENSVECTOR INC

Inventor： GALSTIAN TIGRAN ,  PRESNIAKOV VLADIMIR ,  ASATRYAN KAREN ,  ZOHRABYAN ARMEN

IPC: G02F1/133 ,  G02F1/1343 ,  G02F1/29

CPC classification number: G02F1/134309 ,  G02F1/13439 ,  G02F1/13471 ,  G02F1/135 ,  G02F2001/294 ,  G02F2203/06

Abstract: Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The frequency of a drive signal that generates an electric field in the device can be varied, and the frequency dependent material has different charge mobilities for the different frequencies. At a low charge mobility, the frequency dependent material has little effect on the existing electrode structures. However, at a high charge mobility, the frequency dependent material appears as an extension of the fixed electrodes, and can be used to change the effective electrode structure and, thereby, the spatial profile of the electric field. This, in turn, changes the optical properties of the liquid crystal, thus allowing the optical device to be frequency controllable.

公开(公告)号：EP3224673A4

公开(公告)日：2018-07-11

申请号：EP15863807

申请日：2015-11-24

Applicant: LENSVECTOR INC

Inventor： GALSTIAN TIGRAN ,  ASATRYAN KAREN ,  ZOHRABYAN ARMEN ,  THIBOUTOT MARCO ,  PRESNIAKOV VLADIMIR

IPC: G02F1/31 ,  G02B3/08

CPC classification number: G02F1/292 ,  G02B3/08 ,  G02F1/1337 ,  G02F1/29 ,  G02F2001/134381 ,  G02F2001/294

Abstract: A liquid crystal optical device is described configured to provide variable beam steering or refractive Fresnel lens control over light passing through an aperture of the device. The device includes at least one layer of liquid crystal material contained by substrates having alignment layers. An arrangement of electrodes is configured to provide a spatially varying electric field distribution within a number of zones within the liquid crystal layer. The liquid crystal optical device is structured to provide a spatial variation in optical phase delay with a transition at a boundary between zones which is an approximation of a sawtooth waveform across the boundaries of multiple zones. The arrangement of electrodes, device layered geometry and methods of driving the electrodes increase the effective aperture of the overall optical device.

公开(公告)号：EP2702444A4

公开(公告)日：2015-09-30

申请号：EP11849389

申请日：2012-01-30

Applicant: LENSVECTOR INC

Inventor： ZOHRABYAN ARMEN ,  ASATRYAN KAREN ,  GALSTIAN TIGRAN ,  PRESNIAKOV VLADIMIR ,  TORK AMIR ,  BAGRAMYAN ARAM

IPC: G02F1/1343 ,  G02F1/1347 ,  G02F1/29

CPC classification number: G02B3/0081 ,  G02B27/64 ,  G02F1/134309 ,  G02F1/1347 ,  G02F1/29 ,  G02F2001/294 ,  G02F2203/06

公开(公告)号：EP2297747A4

公开(公告)日：2012-08-15

申请号：EP09766301

申请日：2009-06-21

Applicant: LENSVECTOR INC

Inventor： GALSTIAN TIGRAN ,  PRESNIAKOV VLADIMIR ,  ASATRYAN KAREN ,  TORK AMIR ,  ZOHRABYAN ARMEN ,  BAGRAMYAN ARAM

IPC: H01B1/12 ,  C08J3/28 ,  C08L57/00 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/29

CPC classification number: G02F1/29 ,  C08J3/28 ,  G02F1/13306 ,  G02F1/1337 ,  G02F1/134309 ,  G02F2001/133749 ,  G02F2001/294 ,  G02F2203/24

Abstract: Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The frequency of a drive signal that generates an electric field in the device may be varied, and the frequency dependent material has different charge mobilities for the different frequencies. At a low charge mobility, the frequency dependent material has little effect on the existing electrode structures. However, at a high charge mobility, the frequency dependent material appears as an extension of the fixed electrodes, and may be used to change the effective electrode structure and, thereby, the spatial profile of the electric field. This, in turn, changes the optical properties of the liquid crystal, thus allowing the optical device to be frequency controllable.