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    Motionless adaptive stereoscopic scene capture with tuneable liquid crystal lenses and stereoscopic auto-focusing methods
    33.
    发明授权
    Motionless adaptive stereoscopic scene capture with tuneable liquid crystal lenses and stereoscopic auto-focusing methods 有权
    采用可调式液晶镜头和立体自动对焦方式进行动态自适应立体场景拍摄

    公开(公告)号：US09161681B2

    公开(公告)日：2015-10-20

    申请号：US13311377

    申请日：2011-12-05

    Applicant: Tigran Galstian ,  Peter P Clark ,  Suresh Venkatraman

    Inventor： Tigran Galstian ,  Peter P Clark ,  Suresh Venkatraman

    IPC: H04N13/00 ,  A61B1/04 ,  H04N13/04 ,  G03B3/00 ,  G03B13/00 ,  G06K9/00 ,  G06K9/40 ,  A61B1/00 ,  G02B3/14 ,  G02B27/22 ,  H04N13/02

    CPC classification number: A61B1/04 ,  A61B1/00193 ,  G02B3/14 ,  G02B27/22 ,  H04N13/20 ,  H04N13/239 ,  H04N13/243

    Abstract: A motionless adaptive focus stereoscopic scene capture apparatus employing tunable liquid crystal lenses is provided. The apparatus includes at least two image sensors preferably fabricated as a monolithic stereo image capture component and at least two corresponding tunable liquid crystal lenses preferably fabricated as a monolithic focus adjustment component. Using a variable focus tunable liquid crystal lens at each aperture stop provides constant magnification focus control. Controlled spatial variance of a spatially variant electric field applied to the liquid crystal of each tunable liquid crystal lens provides optical axis shift enabling registration between stereo images. A controller implements coupled auto-focusing methods employing multiple focus scores derived from at least two camera image sensors and providing multiple tunable liquid crystal lens drive signals for synchronous focus acquisition of a three dimensional scene. Wafer manufacture provides a compact stereoscopic image capture apparatus for endoscopic surgery, optical inspection and entertainment applications.

    Abstract translation: 提供了采用可调谐液晶透镜的静止自适应焦点立体场景捕捉装置。 该装置包括至少两个图像传感器，优选地制造为单片立体图像捕获部件和至少两个对应的可调谐液晶透镜，优选地制造为单片焦点调节部件。 在每个孔径光阑处使用可变焦点可调谐液晶镜头提供恒定的放大倍率对焦控制。 施加到每个可调谐液晶透镜的液晶的空间变化电场的受控空间方差提供了能够在立体图像之间配准的光轴偏移。 控制器实现使用从至少两个相机图像传感器导出的多个焦点分数的耦合自动对焦方法，并且提供用于三维场景的同步聚焦获取的多个可调谐液晶透镜驱动信号。 晶圆制造为内窥镜手术，光学检查和娱乐应用提供了紧凑的立体图像捕获设备。

    CALIBRATION OF TUNABLE LIQUID CRYSTAL OPTICAL DEVICE
    34.
    发明申请
    CALIBRATION OF TUNABLE LIQUID CRYSTAL OPTICAL DEVICE 有权
    可调节液晶光学器件的校准

    公开(公告)号：US20130250197A1

    公开(公告)日：2013-09-26

    申请号：US13822898

    申请日：2011-09-21

    Applicant: Behzad Khodadad ,  Michael J. Nystrom ,  Bahram Afshari ,  Karen Asatryan ,  Tigran Galstian

    Inventor： Behzad Khodadad ,  Michael J. Nystrom ,  Bahram Afshari ,  Karen Asatryan ,  Tigran Galstian

    IPC: G02F1/133

    CPC classification number: G02F1/13306 ,  G02F2203/60

    Abstract: A tunable liquid crystal optical device is described. The optical device has an electrode arrangement associated with a liquid crystal cell and includes a hole patterned electrode, wherein control of the liquid crystal cell depends on electrical characteristics of liquid crystal optical device layers. The optical device further has a circuit for measuring said electrical characteristics of the liquid crystal optical device layers, and a drive signal circuit having at least one parameter adjusted as a function of the measured electrical characteristics. The drive signal circuit generates a control signal for the electrode arrangement.

    Abstract translation: 描述了可调谐液晶光学器件。 光学器件具有与液晶单元相关联的电极布置，并且包括孔图案化电极，其中液晶单元的控制取决于液晶光学器件层的电特性。 光学装置还具有用于测量液晶光学器件层的所述电特性的电路，以及具有根据所测量的电特性调整的至少一个参数的驱动信号电路。 驱动信号电路产生用于电极装置的控制信号。

    Multiple Cell Liquid Crystal Optical Device With Coupled Electric Field Control
    36.
    发明申请
    Multiple Cell Liquid Crystal Optical Device With Coupled Electric Field Control 有权
    具有耦合电场控制的多单元液晶光学器件

    公开(公告)号：US20120188490A1

    公开(公告)日：2012-07-26

    申请号：US13360648

    申请日：2012-01-27

    Applicant: Armen ZOHRABYAN ,  Karen ASATRYAN ,  Tigran GALSTIAN ,  Vladimir PRESNIAKOV ,  Amir TORK ,  Aram BAGRAMYAN

    Inventor： Armen ZOHRABYAN ,  Karen ASATRYAN ,  Tigran GALSTIAN ,  Vladimir PRESNIAKOV ,  Amir TORK ,  Aram BAGRAMYAN

    IPC: G02F1/1335 ,  G02F1/1337

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

    Abstract: A liquid crystal optical device is provided. The optical device includes a liquid crystal cell controlling optical properties of light passing therethrough and has: a liquid crystal layer, a planar electrode located to one side of said liquid crystal layer; an electric field control structure located to the opposite side of the liquid crystal layer; and a wavefront adjustment structure configured to provide optical phase front adjustment. In some embodiments the wavefront adjustment structure is a conductive floating electrode. In other embodiments the wavefront adjustment structure is a weakly conductive structure having spatially variable sheet resistance. In other embodiments the wavefront adjustment structure a weakly conductive structure having spatially variable sheet resistance having a frequency dependent characteristic.

    Abstract translation: 提供了一种液晶光学器件。 光学装置包括控制通过其的光的光学性质的液晶单元，具有：液晶层，位于所述液晶层一侧的平面电极; 位于液晶层的相对侧的电场控制结构; 以及配置为提供光学相位前调整的波前调整结构。 在一些实施例中，波前调整结构是导电浮动电极。 在其他实施例中，波前调整结构是具有空间可变薄片电阻的弱导电结构。 在其它实施例中，波前调节结构具有具有频率依赖特性的空间可变薄层电阻的弱导电结构。

    TUNABLE LIQUID LENS WITH REDUCED ABERRATION
    37.
    发明申请
    TUNABLE LIQUID LENS WITH REDUCED ABERRATION 审中-公开
    可降低液滴的液体透镜

    公开(公告)号：US20120127380A1

    公开(公告)日：2012-05-24

    申请号：US13296604

    申请日：2011-11-15

    Applicant: Tigran GALSTIAN ,  Karen ASATRYAN ,  Vladimir PRESNIAKOV ,  Armen ZOHRABYAN ,  Amir TORK ,  Aram BAGRAMYAN

    Inventor： Tigran GALSTIAN ,  Karen ASATRYAN ,  Vladimir PRESNIAKOV ,  Armen ZOHRABYAN ,  Amir TORK ,  Aram BAGRAMYAN

    IPC: G02B3/14 ,  G02F1/29

    CPC classification number: G03B17/00 ,  G02B3/14 ,  G02F2001/291

    Abstract: A tunable optical imaging system uses a fixed lens and a tunable liquid crystal lens that is operated only outside of an operational range of high aberration. A voltage range applied to change the optical power of the liquid crystal lens is limited to a continuous tunable range of low aberration. The relative positioning between the lens and a corresponding photodetector, and the relative lens powers of a fixed lens and the tunable lens, may be selected to compensate for any optical power offsets resulting from the limitation of the voltage range of the tunable lens. The lens may be operated in either positive tunability or negative tunability mode.

    Abstract translation: 可调谐光学成像系统使用仅在高像差的操作范围之外操作的固定透镜和可调谐液晶透镜。 施加以改变液晶透镜的光焦度的电压范围被限制在低像差的连续可调范围。 可以选择透镜和相应的光电检测器之间的相对定位以及固定透镜和可调透镜的相对透镜功率，以补偿由可调透镜的电压范围的限制导致的任何光功率偏移。 透镜可以以正的可调谐性或负的可调谐性模式进行操作。

    ELECTRO-OPTICAL DEVICES USING DYNAMIC RECONFIGURATION OF EFFECTIVE ELECTRODE STRUCTURES
    39.
    发明申请
    ELECTRO-OPTICAL DEVICES USING DYNAMIC RECONFIGURATION OF EFFECTIVE ELECTRODE STRUCTURES 有权
    使用有效电极结构的动态重新配置的电光装置

    公开(公告)号：US20110109824A1

    公开(公告)日：2011-05-12

    申请号：US13000601

    申请日：2009-06-21

    Applicant: Tigran GALSTIAN

    Inventor： Tigran GALSTIAN

    IPC: G02F1/133 ,  C09K19/52 ,  H01B1/12 ,  H01B3/20 ,  G02F1/1343

    CPC classification number: C09K19/02 ,  C09K19/52 ,  G02F1/13439 ,  G02F1/29 ,  G02F2001/294

    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.

    Abstract translation: 用于控制光通过液晶层的传播的可变液晶装置使用频率相关材料来动态地重新配置装置中的有效电极结构。 可以改变在器件中产生电场的驱动信号的频率，并且频率依赖材料对于不同的频率具有不同的电荷迁移率。 在低电荷迁移率下，频率相关材料对现有的电极结构几乎没有影响。 然而，在高电荷迁移率下，频率依赖材料表现为固定电极的延伸，并且可用于改变有效电极结构，从而改变电场的空间分布。 这又改变了液晶的光学特性，从而允许光学器件是频率可控的。

    A BEAM SHAPING DEVICE WITH IMPROVED PERFORMANCE
    40.
    发明公开
    A BEAM SHAPING DEVICE WITH IMPROVED PERFORMANCE 审中-公开

    公开(公告)号：US20230229032A1

    公开(公告)日：2023-07-20

    申请号：US17997747

    申请日：2021-05-04

    Applicant: LENSVECTOR INC.

    Inventor： Tigran GALSTIAN ,  Armen ZOHRABYAN ,  Simon CAREAU

    IPC: G02F1/133 ,  G02B27/00 ,  G02B27/28

    CPC classification number: G02F1/13306 ,  G02B27/0068 ,  G02B27/286 ,  G02F2203/07

    Abstract: Liquid crystal (LC) beam control devices using a dispersion shaped (DS) half wave plate (HWP), with specific physical characteristics, allows the broadened beam to maintain significantly better the color cohesion. Beneficial aspects of using a HWP with an appropriate thickness and birefringence index which makes it inefficient in the blue wavelength spectrum, therefore reducing the blue photon depletion in the center of the broadened beam is described herein. Combinations of an homeotropic LC cell and DS HWP structures for reduced color separation, faster relaxation time and reduced ground state scattering is further described herein.

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