公开(公告)号：EP2517068A1

公开(公告)日：2012-10-31

申请号：EP10838467.8

申请日：2010-12-23

Applicant: Lensvector Inc.

Inventor： GALSTIAN, Tigran ,  PRESNIAKOV, Vladimir ,  ASATRYAN , Karen ,  ZOHRABYAN, Armen

IPC: G02F1/133 ,  G02F1/1343

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：EP3510442A1

公开(公告)日：2019-07-17

申请号：EP17847857.4

申请日：2017-09-08

Applicant: LensVector Inc.

Inventor： GALSTIAN, Tigran ,  ASATRYAN, Karen ,  PRESNIAKOV, Vladimir ,  ZOHRABYAN, Armen ,  GODIN, Jacques

IPC: G02F1/29 ,  F21V8/00 ,  G02B5/02 ,  G02F1/13 ,  G02F1/1334 ,  G08C23/04

公开(公告)号：EP2972575B1

公开(公告)日：2018-07-11

申请号：EP14764478.5

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：EP2972575A1

公开(公告)日：2016-01-20

申请号：EP14764478.5

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：EP2297606B1

公开(公告)日：2018-11-28

申请号：EP09756991.7

申请日：2009-06-05

Applicant: Lensvector Inc.

Inventor： NYSTROM, Michael ,  KONOVALOV, Viktor ,  MA, Rubin ,  TORK, Amir ,  BAGRAMYAN, Aram ,  PRESNIAKOV, Vladimir

IPC: G02F1/1345 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/13439 ,  G02F1/133351 ,  G02F1/134309 ,  G02F1/1345 ,  G02F1/1347 ,  G02F2001/133302 ,  G02F2001/294 ,  G02F2201/42 ,  G02F2202/28

Abstract: A tunable liquid crystal optical device defining an optical aperture and having a layered structure. The device includes a film electrode formed on a surface of a first substrate and covered by a second substrate, and a contact structure filling a volume within the layered structure and contacting the film electrode. The contact structure is located outside of the optical aperture and provides an electrical connection surface much larger than a thickness of the film electrode, such that reliable electrical connections may be made to the electrode, particularly in the context of wafer scale manufacturing of such a device.

公开(公告)号：EP3347759A1

公开(公告)日：2018-07-18

申请号：EP16843322.5

申请日：2016-05-25

Applicant: LensVector Inc.

Inventor： PRESNIAKOV, Vladimir ,  ASATRYAN, Karen ,  ZOHRABYAN, Armen ,  GALSTIAN, Tigran ,  BAGRAMYAN, Aram ,  CAREAU, Simon

IPC: G02B27/09 ,  G02F1/13

CPC classification number: G02F1/134309 ,  G02F1/1337 ,  G02F2203/26 ,  G02F2203/50

Abstract: Liquid crystal light beam control devices and their manufacture are described. Beneficial aspects of beam broadening devices employed for controlled illumination and architectural purposes are presented including improving beam divergence control, improving beam broadening dynamic range control, beam divergence preconditioning, improving projected beam intensity uniformity and reducing color separation in the projected beam. Both beam control devices having in-plane and homeotropic ground state liquid crystal alignment are presented.

公开(公告)号：EP2917771A1

公开(公告)日：2015-09-16

申请号：EP13852740.3

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

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

Abstract: A spatially non-uniform electrode structure is proposed for controlling a spatially non- uniform electric field driving a tunable liquid crystal lens. The spatially non-uniform electrode structure enables the generation of a predetermined spatially non-uniform electric field profile where complex capacitive coupling between multiple different electrically floating neighboring electrode segments is employed for the generation of the electrical field of desired form by supplying an initial electric potential to a limited number of electrodes.

公开(公告)号：EP3612886A1

公开(公告)日：2020-02-26

申请号：EP18787815.2

申请日：2018-04-20

Applicant: LensVector Inc.

Inventor： GALSTIAN, Tigran ,  PRESNIAKOV, Vladimir ,  ASATRYAN, Karen ,  ZOHRABYAN, Armen

IPC: G02B27/09 ,  G02F1/29

公开(公告)号：EP2297747B1

公开(公告)日：2015-08-19

申请号：EP09766301.7

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.

公开(公告)号：EP2310905A1

公开(公告)日：2011-04-20

申请号：EP09756992.5

申请日：2009-06-05

Applicant: Lensvector Inc.

Inventor： ASATRYAN, Karen ,  GALSTIAN, Tigran ,  BAGRAMYAM, Aram ,  PRESNIAKOV, Vladimir ,  TORK, Amir ,  ZOHRABYAN, Armen ,  CLARK, Peter P.

IPC: G02F1/133 ,  G02F1/137

CPC classification number: G02F1/139 ,  G02F1/133723 ,  G02F1/133784 ,  G02F1/1343 ,  G02F1/1347 ,  G02F1/1395 ,  G02F1/29 ,  G02F2001/133749 ,  G02F2001/291

Abstract: A liquid crystal optical device has a layered structure with split liquid crystal layers having alignment surfaces that define in a liquid crystal material pre-tilt angles of opposite signs. Four liquid crystal layers can provide two directions of linear polarization. In the case of a lens, the device can be a gradient index lens, and the alignment surfaces can have a spatially uniform pre-tilt.