公开(公告)号：WO2011014743A2

公开(公告)日：2011-02-03

申请号：PCT/US2010/043861

申请日：2010-07-30

Applicant: NORTH CAROLINA STATE UNIVERSITY ,  BOULDER NONLINEAR SYSTEMS, INC. ,  ESCUTI, Michael, J. ,  KIM, Jihwan ,  OH, Chulwoo ,  SERATI, Steve

Inventor： ESCUTI, Michael, J. ,  KIM, Jihwan ,  OH, Chulwoo ,  SERATI, Steve

IPC: G02B26/08 ,  G02B5/30 ,  G02F1/13

CPC classification number: G02B27/286 ,  G02F1/1347 ,  G02F1/13476 ,  G02F1/292 ,  G02F2001/291 ,  G02F2201/16

Abstract: A beam steering apparatus includes a first beam steering stage and at least a second beam steering stage arranged in-line with the first beam steering stage. The first beam steering stage includes a first polarization grating comprising a uniaxial birefringent material having a first periodic director pattern, and the second beam steering stage includes a second polarization grating comprising a uniaxial birefringent material having a second periodic director pattern. In nonmechanical embodiments, a polarization selector may be arranged to provide a circularly polarized input beam incident on the first polarization grating. In mechanical embodiments, at least one of the first polarization grating and the second polarization grating may be operable to be independently rotated about an azimuth thereof. Related methods of operation are also discussed.

Abstract translation: 波束控制设备包括第一波束控制级和至少第二波束控制级，第二波束控制级与第一波束控制级串联布置。 第一光束控制级包括第一偏振光栅，第一偏振光栅包括具有第一周期性导向器图案的单轴双折射材料，第二光束控制级包括第二偏振光栅，第二偏振光栅包括具有第二周期性导向器图案的单轴双折射材料。 在非机械实施例中，偏振选择器可以被布置成提供入射在第一偏振光栅上的圆偏振输入光束。 在机械实施例中，第一偏振光栅和第二偏振光栅中的至少一个可以可操作以围绕其方位角独立旋转。 还讨论了相关的操作方法。

公开(公告)号：WO2010042089A1

公开(公告)日：2010-04-15

申请号：PCT/US2008/011611

申请日：2008-10-09

Applicant: NORTH CAROLINA STATE UNIVERSITY ,  ESCUTI, Michael J. ,  OH, Chulwoo ,  KOMANDURI, Ravi ,  CONOVER, Brandon L. ,  KIM, Jihwan

Inventor： ESCUTI, Michael J. ,  OH, Chulwoo ,  KOMANDURI, Ravi ,  CONOVER, Brandon L. ,  KIM, Jihwan

IPC: G02F1/1335 ,  G02F1/139

CPC classification number: G02F1/133528 ,  G02F1/1393 ,  G02F2201/305

Abstract: A liquid crystal device includes a first polarization grating (101), a second polarization grating (102), and a liquid crystal layer (103). The first polarization grating (101) is configured to polarize and diffract incident light (190) into first and second beams (195,196) having different polarizations and different directions of propagation relative to that of the incident light (190). The liquid crystal layer (103) is configured to receive the first and second beams (195,196) from the first polarization grating (101). The liquid crystal layer (103) is configured to be switched between a first state that does not substantially affect respective polarizations of the first and second beams (195,196) traveling therethrough, and a second state that alters the respective polarizations of the first and second beams (195,196) traveling therethrough. The second polarization grating (102) is configured to analyze and diffract the first and second beams (195,196) from the liquid crystal layer (103) to alter the different directions of propagation thereof in response to the state of the liquid crystal layer (103). Related devices are also discussed.

Abstract translation: 液晶装置包括第一偏振光栅（101），第二偏振光栅（102）和液晶层（103）。 第一偏振光栅（101）被配置为将入射光（190）偏振并衍射成具有不同偏振和不同传播方向的第一和第二光束（195,196）相对于入射光（190）的偏振方向。 液晶层（103）被配置为从第一偏振光栅（101）接收第一和第二光束（195,196）。 液晶层（103）被配置为在基本上不影响穿过其中的第一和第二光束（195,196）的相应极化的第一状态之间切换，并且改变第一和第二光束的各自偏振的第二状态 （195,196）。 第二偏振光栅（102）被配置为响应于液晶层（103）的状态来分析和衍射来自液晶层（103）的第一和第二光束（195,196），以改变其不同的传播方向， 。 还讨论了相关设备。

公开(公告)号：WO2008130555A1

公开(公告)日：2008-10-30

申请号：PCT/US2008/004888

申请日：2008-04-16

Applicant: NORTH CAROLINA STATE UNIVERSITY ,  ESCUTI, Michael J. ,  OH, Chulwoo ,  KOMANDURI, Ravi

Inventor： ESCUTI, Michael J. ,  OH, Chulwoo ,  KOMANDURI, Ravi

IPC: G02B5/30 ,  G02B5/18 ,  G02F1/1335

CPC classification number: G02B5/3016 ,  G02B5/1833 ,  G02B5/3083 ,  G02F1/1337 ,  G02F2001/133757

Abstract: A polarization grating includes a substrate and a first polarization grating layer on the substrate. The first polarization grating layer includes a molecular structure that is twisted according to a first twist sense over a first thickness defined between opposing faces of the first polarization grating layer. Some embodiments may include a second polarization grating layer on the first polarization grating layer. The second polarization grating layer includes a molecular structure that is twisted according to a second twist sense that is opposite the first twist sense over a second thickness defined between opposing faces of the second polarization grating layer. Also, a switchable polarization grating includes a liquid crystal layer between first and second substrates. The liquid crystal layer includes liquid crystal molecules having respective relative orientations that are rotated over a thickness defined between opposing faces thereof by a twist angle that is different from a relative phase angle between respective first and second periodic alignment conditions of the first and second substrates. Related devices and fabrication methods are also discussed.

Abstract translation: 偏振光栅包括衬底和衬底上的第一偏振光栅层。 第一偏振光栅层包括在第一偏振光栅层的相对面之间限定的第一厚度上根据第一扭转感扭转的分子结构。 一些实施例可以包括第一偏振光栅层上的第二偏振光栅层。 第二偏振光栅层包括根据在第二偏振光栅层的相对面之间限定的第二厚度上的与第一扭转感相反的第二扭转感扭转的分子结构。 此外，可切换偏振光栅包括在第一和第二基板之间的液晶层。 液晶层包括具有各自相对取向的液晶分子，该相对取向在相对面之间限定的厚度上旋转扭转角度，该扭曲角度与第一和第二基板的相应的第一和第二周期性取向条件之间的相对相位角不同。 还讨论了相关设备和制造方法。

公开(公告)号：WO2021030770A1

公开(公告)日：2021-02-18

申请号：PCT/US2020/046552

申请日：2020-08-14

Applicant: MAGIC LEAP, INC. ,  MANLY, David ,  MATHUR, Vaibhav ,  CARLISLE, Clinton ,  ROLON, Jonathan Alexander ,  OH, Chulwoo ,  MAGIC LEAP, INC.

Inventor： MANLY, David ,  MATHUR, Vaibhav ,  CARLISLE, Clinton ,  ROLON, Jonathan Alexander ,  OH, Chulwoo

IPC: G02B27/01 ,  G02B26/02 ,  G02B26/04 ,  G02B26/06 ,  G02B26/08

Abstract: A head-mounted apparatus include an eyepiece including a variable dimming assembly and a frame mounting the eyepiece so that a user side of the eyepiece faces a towards a user and a world side of the eyepiece opposite the first side faces away from the user. The dynamic dimming assembly selectively modulates an intensity of light transmitted parallel to an optical axis from the world side to the user side during operation. The dynamic dimming assembly includes a variable birefringence cell having multiple pixels each having an independently variable birefringence, a first linear polarizer arranged on the user side of the variable birefringence cell, the first linear polarizer being configured to transmit light propagating parallel to the optical axis linearly polarized along a pass axis of the first linear polarizer orthogonal to the optical axis, a quarter wave plate arranged between the variable birefringence cell and the first linear polarizer.

公开(公告)号：WO2013101129A1

公开(公告)日：2013-07-04

申请号：PCT/US2011/067978

申请日：2011-12-29

Applicant: INTEL CORPORATION ,  HU, Bin ,  SINGH, Vivek K. ,  KIM, Sungwon ,  OH, Chulwoo ,  YAVUZ, Mehmet E.

Inventor： HU, Bin ,  SINGH, Vivek K. ,  KIM, Sungwon ,  OH, Chulwoo ,  YAVUZ, Mehmet E.

IPC: G03F1/72 ,  G03F1/68

CPC classification number: G03F1/68 ,  G03F1/26 ,  G03F1/70

Abstract: Improved mask layout patterns are described for closely spaced primitives in phase shift photolithography masks. In one example, at least a portion of a photolithography mask layout is decomposed into primitives. Jogs are identified from among the primitives, the jogs being characterized by three adjacent corners. E-fields are determined for the identified jogs and are applied to synthesize an electric field at a substrate. The mask layout is corrected using the synthesized electric field and a printed wafer pattern is calculated.

Abstract translation: 在相移光刻掩模中描述了用于紧密间隔的基元的改进的掩模布局图案。 在一个示例中，光刻掩模布局的至少一部分被分解为基元。 从原始图像中识别出慢跑，其特征在于三个相邻角落。 为识别的点动确定电场，并且被施加以在衬底处合成电场。 使用合成电场校正掩模布局，并计算印刷晶片图案。

公开(公告)号：WO2011014743A3

公开(公告)日：2011-05-19

申请号：PCT/US2010043861

申请日：2010-07-30

Applicant: UNIV NORTH CAROLINA STATE ,  BOULDER NONLINEAR SYSTEMS INC ,  ESCUTI MICHAEL J ,  KIM JIHWAN ,  OH CHULWOO ,  SERATI STEVE

Inventor： ESCUTI MICHAEL J ,  KIM JIHWAN ,  OH CHULWOO ,  SERATI STEVE

IPC: G02B26/08 ,  G02B5/30 ,  G02F1/13

CPC classification number: G02B27/286 ,  G02F1/1347 ,  G02F1/13476 ,  G02F1/292 ,  G02F2001/291 ,  G02F2201/16

Abstract: A beam steering apparatus includes a first beam steering stage and at least a second beam steering stage arranged in-line with the first beam steering stage. The first beam steering stage includes a first polarization grating comprising a uniaxial birefringent material having a first periodic director pattern, and the second beam steering stage includes a second polarization grating comprising a uniaxial birefringent material having a second periodic director pattern. In nonmechanical embodiments, a polarization selector may be arranged to provide a circularly polarized input beam incident on the first polarization grating. In mechanical embodiments, at least one of the first polarization grating and the second polarization grating may be operable to be independently rotated about an azimuth thereof. Related methods of operation are also discussed.

Abstract translation: 光束转向装置包括第一光束转向平台和与第一光束转向平台成一直线设置的至少第二光束操纵台。 第一光束转向平台包括第一偏振光栅，其包括具有第一周期性导向图图案的单轴双折射材料，第二光束转向平台包括具有第二周期性导向图图案的单轴双折射材料的第二偏振光栅。 在非机械实施例中，偏振选择器可以被布置成提供入射在第一偏振光栅上的圆偏振输入光束。 在机械实施例中，第一偏振光栅和第二偏振光栅中的至少一个可以可操作地围绕其方位独立旋转。 还讨论了相关的操作方法。

公开(公告)号：WO2008130561A1

公开(公告)日：2008-10-30

申请号：PCT/US2008/004897

申请日：2008-04-16

Applicant: NORTH CAROLINA STATE UNIVERSITY ,  ESCUTI, Michael J. ,  OH, Chulwoo

Inventor： ESCUTI, Michael J. ,  OH, Chulwoo

IPC: G02B5/30 ,  G02B5/18 ,  G02F1/1335

CPC classification number: G02B5/1833 ,  G02B5/3016

Abstract: A multi-layer polarization grating includes a first polarization grating layer, a second polarization grating layer on the first polarization grating layer, and a third polarization grating layer on the second polarization grating layer, such that the second polarization grating layer is between the first and third polarization grating layers. The second polarization grating layer has a periodic molecular structure that is offset relative to that of the first polarization grating layer along an interface therebetween. The third polarization grating layer may also have a periodic molecular structure that is offset relative to that of the second polarization grating layer along an interface therebetween. As such, the periodic molecular structures of the first and second polarization grating layers may be out of phase by a first relative angular shift, and the periodic molecular structures of the second and third polarization grating layers may be out of phase by a second relative angular shift. Related fabrication methods are also discussed.

Abstract translation: 多层偏振光栅包括第一偏振光栅层，第一偏振光栅层上的第二偏振光栅层和第二偏振光栅层上的第三偏振光栅层，使得第二偏振光栅层在第一和第二偏振光栅层之间， 第三偏振光栅层。 第二偏振光栅层具有周期性的分子结构，其相对于第一偏振光栅层沿着它们之间的界面偏移。 第三偏振光栅层也可以具有相对于沿着它们之间的界面的第二偏振光栅层的周期性分子结构偏移。 这样，第一和第二偏振光栅层的周期性分子结构可以与第一相对角位移异相，并且第二和第三偏振光栅层的周期性分子结构可以与第二相对角度 转移。 还讨论了相关的制造方法。