公开(公告)号：US10747084B2

公开(公告)日：2020-08-18

申请号：US16441231

申请日：2019-06-14

Applicant: LENSVECTOR INC.

Inventor： Tigran Galstian ,  Karen Asatryan ,  Armen Zohrabyan ,  Marco Thiboutot ,  Vladimir Presniakov

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/1339 ,  G02F1/29 ,  G02B3/08

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：US10359686B2

公开(公告)日：2019-07-23

申请号：US15528537

申请日：2015-11-24

Applicant: LENSVECTOR INC.

Inventor： Tigran Galstian ,  Karen Asatryan ,  Armen Zohrabyan ,  Marco Thiboutot ,  Vladimir Presniakov

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/29 ,  G02B3/08

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：US10234710B2

公开(公告)日：2019-03-19

申请号：US15308984

申请日：2015-05-04

Applicant: LensVector Inc.

Inventor： Tigran Galstian ,  Aram Bagramyan ,  Amir Tork ,  David Yoon ,  Sergei Yakovenko

IPC: G02F1/1341 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/1339 ,  G02F1/1343

Abstract: An electro-optic device having at least one liquid crystal cell for providing spatially variable control of light includes: a pair of opposed substrates sandwiching a liquid crystal layer therebetween; a pair of electrodes for applying an electric field therebetween, each electrode being deposited on a corresponding substrate; and a liquid crystal reservoir wall defining a lateral extent of the liquid crystal layer between the substrates. The reservoir wall includes: a first bottom barrier deposited on a bottom one of the pair of substrates; and a second curable top barrier deposited on the top substrate outside the first barrier. The first barrier and second uncured barrier are configured to merge on contact to retain liquid crystal material inside the reservoir wall prior to curing the second barrier. Also, a method of wafer level manufacturing and assembly of a liquid crystal optical device.

公开(公告)号：US09833312B2

公开(公告)日：2017-12-05

申请号：US14653574

申请日：2013-12-18

Applicant: LENSVECTOR INC.

Inventor： Tigran Galstian ,  Karen Asatryan ,  Vladimir Presniakov ,  Aram Bagramyan ,  Amir Tork ,  Armen Zohrabyan ,  Simon Careau

IPC: A61F2/16 ,  G02F1/1343 ,  G02B13/00 ,  G02F1/29 ,  G02F1/1337 ,  G02B1/16

CPC classification number: A61F2/1627 ,  A61F2/16 ,  A61F2/1648 ,  A61F2210/0076 ,  G02B1/16 ,  G02B13/0075 ,  G02F1/1337 ,  G02F1/134309 ,  G02F1/13439 ,  G02F1/29

Abstract: A liquid crystal optical device is provided, including a layered structure including at least two support substrates. An external hole patterned control electrode is provided on one of the substrates and has an aperture. An internal hole patterned control electrode is provided on one of the substrates within the aperture, the internal and outer control electrodes being separated by a gap, which forms part of the aperture. A weakly conductive material is provided on one of the substrates over the aperture. A planar transparent electrode is provided on another one of the substrates. An alignment surface is provided on the substrates over the electrodes. A layer of liquid crystal material is contained by the substrates and in contact with the alignment surface of the substrates. A floating transparent electrode is provided on a side of one of the substrates opposite the outer and the internal hole patterned electrode.

公开(公告)号：US09798217B2

公开(公告)日：2017-10-24

申请号：US15348237

申请日：2016-11-10

Applicant: LensVector Inc.

Inventor： Tigran Galstian ,  Vladimir Presniakov ,  Karen Asatryan ,  Amir Tork ,  Armen Zohrabyan ,  Aram Bagramyan

IPC: G02F1/133 ,  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 drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.

公开(公告)号：US20170219909A1

公开(公告)日：2017-08-03

申请号：US15348237

申请日：2016-11-10

Applicant: LensVector Inc.

Inventor： Tigran Galstian ,  Vladimir Presniakov ,  Karen Asatryan ,  Amir Tork ,  Armen Zohrabyan ,  Aram Bagramyan

IPC: 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 drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.

公开(公告)号：US09612504B2

公开(公告)日：2017-04-04

申请号：US14441452

申请日：2013-11-12

Applicant: LENSVECTOR INC.

Inventor： Tigran Galstian ,  Vladimir Presniakov ,  Karen Asatryan ,  Amir Tork ,  Armen Zohrabyan ,  Aram Bagramyan ,  Simon Careau

IPC: G02F1/29 ,  G02B27/64 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1347

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：US20160377830A1

公开(公告)日：2016-12-29

申请号：US15196421

申请日：2016-06-29

Applicant: LensVector Inc.

Inventor： Armen Zohrabyan ,  Tigran Galstian ,  Karen Asatryan ,  Vladimir Presniakov ,  Marco Thiboutot ,  Aram Bagramyan ,  Amir Tork ,  Jeffrey James Parker ,  Ted Cooper ,  Behzad Khodadad ,  Gongjian Hu ,  Chong I Cheang

IPC: G02B7/36 ,  H04N5/232 ,  G02F1/1337 ,  G03B3/10 ,  G02F1/29 ,  G02F1/1343

CPC classification number: G02B7/36 ,  G02B7/38 ,  G02F1/133784 ,  G02F1/13439 ,  G02F1/1347 ,  G02F1/29 ,  G02F2001/294 ,  G03B3/10 ,  H04N5/23212

Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.

公开(公告)号：US09429799B2

公开(公告)日：2016-08-30

申请号：US14694386

申请日：2015-04-23

Applicant: LENSVECTOR INC.

Inventor： Tigran Galstian ,  Vladimir Presniakov ,  Karen Asatryan ,  Armen Zohrabyan

IPC: G02F1/133 ,  G02F1/1343 ,  G02F1/135 ,  G02F1/1347 ,  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：US20160161782A1

公开(公告)日：2016-06-09

申请号：US14995293

申请日：2016-01-14

Applicant: LensVector Inc.

Inventor： Tigran Galstian ,  Vladimir Presniakov ,  Karen Asatryan ,  Amir Tork ,  Armen Zohrabyan ,  Aram Bagramyan

IPC: G02F1/133 ,  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 drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.