公开(公告)号：EP2929378A1

公开(公告)日：2015-10-14

申请号：EP13805472.1

申请日：2013-12-02

Applicant: BAE Systems PLC

Inventor： SIMMONDS, Michael David ,  VALERA, Mohmed Salim

IPC: G02B5/18 ,  G02F1/295 ,  G02F1/313

CPC classification number: G02B5/1828 ,  G02B5/1823 ,  G02B5/1842 ,  G02B5/1866 ,  G02B6/0026 ,  G02B6/005 ,  G02B27/4211 ,  G02B27/4272 ,  G02F1/295 ,  G02F1/313 ,  G02F2201/305 ,  G02F2203/34

Abstract: An apparatus is disclosed for producing an optical display comprising an optical waveguide (1) and a pair (10, 16) of switchable diffraction gratings that are switchable between a diffractive state and a non-diffractive state. A pair of non-switchable diffraction gratings (2, 14) is arranged to receive diffract light from one switchable grating for guided propagation along the optical waveguide and out to the other switchable grating for viewing. The pair of non-switchable gratings are tuned to a first operating wavelength of light, while the pair of switchable gratings are tuned to a different operating wavelength of light to diffract that light into/from a field of view in common with that of the non-switchable gratings such that light of two wavelengths occupies the same field of view.

Abstract translation: 一种装置是游离缺失盘在光学显示生产包含光波导（1）和可切换的衍射光栅那样的一对（10，16）的被衍射状态和非衍射状态之间切换。 一对非可切换衍射光栅（2,14）被布置成从一个切换光栅接收衍射光为沿光波导和出用于观看的其他切换光栅导向传播。 所述一对非可切换光栅被调谐到的光的第一工作波长，而所述一对可切换光栅被调谐到的光的不同的工作波长来衍射该轻微到/从的视图共同的场与做了非 -switchable光栅寻求的是轻微的两种波长的占有相同的视场。

公开(公告)号：EP2766766A4

公开(公告)日：2015-02-11

申请号：EP13743881

申请日：2013-01-30

Applicant: HUAWEI TECH CO LTD

Inventor： MAO CHONGCHANG ,  LI MINCHUN ,  CHEN BO ,  FANG YANG

IPC: G02B26/08 ,  G02B5/18 ,  G02B5/30 ,  G02B5/32 ,  G02B6/35 ,  G02B27/44 ,  G02F1/13 ,  G02F1/1347 ,  G02F1/31 ,  H04J14/02 ,  H04Q3/00

CPC classification number: G02F1/31 ,  G02B3/005 ,  G02B5/12 ,  G02B6/29383 ,  G02B6/356 ,  G02B6/3594 ,  G02B17/0864 ,  G02B26/0808 ,  G02B27/285 ,  G02B27/286 ,  G02F1/0136 ,  G02F1/133528 ,  G02F1/133788 ,  G02F1/13471 ,  G02F1/292 ,  G02F2001/133538 ,  G02F2001/133541 ,  G02F2001/13355 ,  G02F2001/133757 ,  G02F2001/311 ,  G02F2201/305 ,  G02F2203/05 ,  G02F2203/07 ,  H04J14/0212 ,  H04Q3/00 ,  H04Q2011/0015 ,  H04Q2213/1301

Abstract: Apparatus and method embodiments are provided for implementing a wavelength selective switch (WSS). The embodiments use combinations of switchable polarization grating (SPG) and LC cells and combinations of polymer polarization grating (PPG) and LC cells to achieve 1×N WSS systems. An embodiment optical switch includes a liquid crystal cell and a SPG cell adjacent to the liquid crystal cell. The SPG includes liquid crystal material between two photo-alignment layers, an electrode layer overlying each photo-alignment layer, and a glass substrate overlying each electrode layer. An embodiment method includes polarizing an incident light beam at a circular polarization before diffracting, at a polarization grating, the polarized incident light beam in a determined angle that corresponds to a diffraction order in accordance to the circular polarization of the incident light beam and a hologram pattern direction formed inside the polarization grating.

公开(公告)号：EP1936429B1

公开(公告)日：2014-02-19

申请号：EP08003869.8

申请日：1999-07-28

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Date, Munekazu c/o NTT Intellectual Property Center ,  Suyama, Shiro c/o NTT Intellectual Property Center ,  Kato, Kinya c/o NTT Intellectual Property Center ,  Uehira, Kazutake c/o NTT Intellectual Property Center

IPC: G02F1/13357 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/313 ,  G02B6/00

CPC classification number: G02F1/1334 ,  G02B6/005 ,  G02B6/0055 ,  G02B6/0078 ,  G02F1/13336 ,  G02F1/13342 ,  G02F1/133553 ,  G02F1/1336 ,  G02F1/133615 ,  G02F1/134309 ,  G02F1/134363 ,  G02F1/1393 ,  G02F2001/13347 ,  G02F2001/133616 ,  G02F2001/13712 ,  G02F2201/08 ,  G02F2201/124 ,  G02F2201/305 ,  G02F2203/023 ,  G02F2203/026

公开(公告)号：EP2475055A1

公开(公告)日：2012-07-11

申请号：EP10813568.2

申请日：2010-07-08

Applicant: Hamamatsu Photonics K.K.

Inventor： FUJIMOTO Masatoshi ,  KAWADA Yoichi ,  FUKAZAWA Kodai

IPC: H01S3/10 ,  G02B5/18

CPC classification number: H01S3/0057 ,  G02B17/023 ,  G02B27/1093 ,  G02F2201/17 ,  G02F2201/305 ,  G02F2203/26 ,  H01S3/067 ,  H01S3/094053 ,  H01S3/1112 ,  H01S3/1618 ,  H01S3/2308

Abstract: An input light pulse Pi, input at a constant incident angle to a transmission-type diffraction grating 20, is dispersed according to the wavelengths to be output at output angles according to the wavelengths, to be reflected by reflecting mirrors 41, 42, and 43 in series, and thereafter, the light rays are input at incident angles according to their wavelengths to the transmission-type diffraction grating 20, to be output at a constant output angle from the transmission-type diffraction grating 20. The optical path for the light rays of respective wavelength components, output at the constant output angle from the transmission-type diffraction grating 20, is folded back by a rectangular prism 40, to be input at a constant incident angle to the transmission-type diffraction grating 20, and the light rays are output at output angles according to their wavelengths, to be reflected by the reflecting mirrors 43, 42, and 41 in series, and are thereafter input at incident angles according to their wavelengths to the transmission-type diffraction grating 20. The light rays, input at the incident angles according to their wavelengths to the transmission-type diffraction grating 20, are coupled by the transmission-type diffraction grating 20, to be output as an output light pulse Po. Thereby, realizing the pulse width conversion device and the optical amplifier system, which are easily downsized.

Abstract translation: 输入光脉冲Pi以与透射型衍射光栅20恒定的入射角输入，根据波长输出的波长分散，由反射镜41,42和43反射出来 然后将光线根据其波长以入射角输入到透射型衍射光栅20，以从透射型衍射光栅20以恒定的输出角输出。光的光路 从透射型衍射光栅20以恒定的输出角输出的各个波长分量的光线被矩形棱镜40折回，以与透射型衍射光栅20以恒定的入射角输入，并且光 射线根据其波长以输出角输出，被反射镜43,44和41串联反射，然后按照入射角按照 它们到透射型衍射光栅20的波长。根据其对透射型衍射光栅20的波长的入射角输入的光线通过透射型衍射光栅20耦合，以输出为输出 光脉Po。 从而实现容易缩小的脉宽转换装置和光放大器系统。

公开(公告)号：EP2397885A1

公开(公告)日：2011-12-21

申请号：EP09843065.5

申请日：2009-10-29

Applicant: Sharp Kabushiki Kaisha

Inventor： YASHIRO, Yuji ,  KAIDA Kazuya ,  KADOWAKI, Shinya ,  KUNIMASA, Fumie ,  ISHIDA, Takeshi ,  SHIGETA, Hiroaki ,  YUKI, Ryuzo

IPC: G02F1/1335

CPC classification number: G02F1/133514 ,  G02F1/133504 ,  G02F1/133617 ,  G02F2201/305

Abstract: A liquid crystal display panel (39) includes a diffraction grating (DG) that is provided on the side of the inner surface (32N) of an opposed substrate (32) for receiving light and is used for enhancing the light output efficiency from the inner surface (32N) to the outside.

Abstract translation: 液晶显示面板（39）包括设置在用于接收光的相对基板（32）的内表面（32N）侧的衍射光栅（DG），用于提高从内部的光输出效率 表面（32N）到外面。

公开(公告)号：EP2322957A1

公开(公告)日：2011-05-18

申请号：EP09175783.1

申请日：2009-11-12

Applicant: poLight AS

Inventor： Kartashov, Vladimir ,  Akram, Muhammad Nadeem

IPC: G02B5/18 ,  G02B27/48

CPC classification number: G02B27/48 ,  G02B5/1828 ,  G02F1/292 ,  G02F1/315 ,  G02F2201/305

Abstract: The present invention relates to a device and system for improving a laser light based imaging projection system, and especially to a device and system for controlling speckle contrast in laser light imaging projection systems according to a specific speckle reduction scheme. A device and system according to the present invention comprises at least on spatial light modulator with a programmable grating geometry on a reflective surface of the device. A series of control signals can then provide a static speckle pattern or a plurality uncorrelated speckle patterns. The device and system according to the present invention can utilize the programmable grating feature to decrease, or increase the speckle in whole images or parts of images being projected in the system.

Abstract translation: 本发明涉及一种用于改进基于激光的成像投影系统的装置和系统，特别涉及一种根据特定的散斑减少方案来控制激光成像投影系统中的斑点对比度的装置和系统。 根据本发明的装置和系统至少包括在装置的反射表面上具有可编程光栅几何形状的空间光调制器。 一系列控制信号可以提供静态散斑图案或多个不相关的散斑图案。 根据本发明的装置和系统可以利用可编程光栅特征来减少或增加在整个图像中或在系统中投射的图像的部分的斑点。

公开(公告)号：EP2180368A1

公开(公告)日：2010-04-28

申请号：EP08790342.3

申请日：2008-08-01

Applicant: Sharp Kabushiki Kaisha

Inventor： WATANABE, Hisashi ,  TAGUCHI, Tokio

IPC: G02F1/1335 ,  G02B5/02 ,  G02B5/30

CPC classification number: G02F1/133504 ,  B29C2033/426 ,  B29D11/00798 ,  G02B5/0215 ,  G02B5/0221 ,  G02B5/0278 ,  G02B5/0284 ,  G02F1/133526 ,  G02F1/133553 ,  G02F1/133555 ,  G02F2201/14 ,  G02F2201/305 ,  G02F2201/38 ,  G02F2202/023 ,  G02F2203/03 ,  G02F2203/04

Abstract: A liquid crystal display device 100 of the present invention includes a liquid crystal layer 13, a specular reflection layer 14r, the polarization layer 17 disposed on the viewer's side, a retardation layer 18 interposed between the liquid crystal layer and the polarization layer, and a light scattering layer 20A disposed on the viewer's side of the polarization layer 17. The light scattering layer 20A has a scattering surface. The scattering surface includes a macro uneven structure 22a which has light scatterability and a micro uneven structure 22b which is superimposedly formed over the macro uneven structure and which is smaller than visible light wavelengths.

Abstract translation: 本发明的液晶显示装置100包括液晶层13，镜面反射层14r，设置在观察者侧的偏振层17，夹在液晶层与偏光层之间的延迟层18，以及 光散射层20A设置在偏振层17的观察者侧。光散射层20A具有散射面。 散射表面包括具有光散射性的宏观不平坦结构22a和叠加形成在宏观不均匀结构上并且小于可见光波长的微不平坦结构22b。

公开(公告)号：EP2149070A1

公开(公告)日：2010-02-03

申请号：EP08749935.6

申请日：2008-04-30

Applicant: Leica Microsystems CMS GmbH

Inventor： GUGEL, Hilmar ,  SEYFRIED, Volker

IPC: G02F1/11 ,  G02B21/00

CPC classification number: G02F1/116 ,  G02B3/0087 ,  G02B21/0032 ,  G02B21/0064 ,  G02B21/16 ,  G02B27/0927 ,  G02B27/42 ,  G02B27/46 ,  G02F1/00 ,  G02F1/01 ,  G02F1/03 ,  G02F1/11 ,  G02F1/29 ,  G02F1/33 ,  G02F1/353 ,  G02F2201/305 ,  G02F2202/32 ,  G02F2203/12 ,  G02F2203/18 ,  G02F2203/24

Abstract: The invention relates to an acousto-optical filter element (114), which comprises an acousto-optical crystal (118) having an acousto-optical signal generator (120) for creating acoustic signals in the acousto-optical crystal (118). The acousto-optical crystal (118) is configured to selectively spatially deflect light having a target wavelength from an input light beam (116) entering the acousto-optical crystal (118), corresponding to a high frequency applied to the acoustic signal generator (120), and to create a target light beam (126) having the target wavelength. According to the invention, the acousto-optical filter element (114) comprises a spatial filter element (132) arranged in the target light beam (126), said filter element being configured to selectively suppress the intensity of the target light beam (126) in a plane vertical to the propagation direction of the target light beam (126).

Abstract translation: 提供了一种声光滤波器元件（114），其具有声光晶体（118），该声光晶体具有用于在声光晶体（118）中产生声信号的声信号发射器（120）。 声光晶体（118）被设计为根据进入声光晶体（118）的输入光束（116）选择性地空间偏转目标波长的光，作为施加到声信号的高频的函数 发射器（120），从而产生具有目标波长的目标光束（126）。 此外，声光滤波器元件（114）包括位于目标光束（126）中的空间滤光元件（132），并被设计成选择性地抑制平面中的目标光束（126）的强度 垂直于目标光束（126）的传播方向。

公开(公告)号：EP2137571A2

公开(公告)日：2009-12-30

申请号：EP08742943.7

申请日：2008-04-16

Applicant: North Carolina State University

Inventor： ESCUTI, Michael, J.

IPC: G02F1/1337 ,  G02F1/136

CPC classification number: G03H1/00 ,  G02B5/1833 ,  G02F1/1337 ,  G02F2001/133757 ,  G02F2201/305

Abstract: A method of fabricating a switchable liquid crystal polarization grating includes creating a degenerate planar anchoring condition on a surface of a reflective substrate. An alignment layer may be formed on a transmissive substrate and may be patterned to create a periodic alignment condition therein. The transmissive substrate including the patterned alignment layer thereon may be assembled adjacent to the surface of the reflective substrate including the degenerate planar anchoring condition thereon to define a gap therebetween. A liquid crystal layer is formed on the surface of the reflective substrate including the degenerate planar alignment condition. The liquid crystal layer may be formed in the gap directly on the alignment layer such that molecules of the liquid crystal layer are aligned based on the periodic alignment condition in the alignment layer. Related fabrication methods and polarization gratings are also discussed.

公开(公告)号：EP1780582A4

公开(公告)日：2009-07-08

申请号：EP05767354

申请日：2005-07-27

Applicant: ASAHI GLASS CO LTD

Inventor： SATO HIROMASA

IPC: G02F1/13 ,  G02B5/18 ,  G02B5/30

CPC classification number: G02B5/1866 ,  G02B5/3016 ,  G02B5/3025 ,  G02F1/133371 ,  G02F1/133504 ,  G02F1/292 ,  G02F2201/305 ,  G02F2203/055

Abstract: There is provided a layered polarized diffractive filter capable of changing the wavelength to be transmitted or diffraction-shielded. The polarized diffractive filter to which light having different two or more peak wavelengths is incident and which shields light of at least one of the peak wavelengths by diffraction while transmitting the light of the other peak wavelengths. The polarized diffractive filter has transparent substrates (11, 13) on which cyclic concave/convex portions (12) constituting a diffraction grating are formed and the concave/convex portions (12) are filled with a liquid crystal material as an optical member, thereby forming a diffractive filter. Two polarized diffractive filters are layered so that longitudinal directions of the diffractive grating of the polarized diffractive filter orthogonally intersect each other, thereby constituting a layered polarized diffractive filter.