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：EP3084509B1

公开(公告)日：2018-10-03

申请号：EP14820800.2

申请日：2014-12-12

Applicant: BAE Systems PLC

Inventor： SIMMONDS, Michael David ,  FERNS, Anthony Robert

IPC: G02B27/00 ,  G02B5/18 ,  F21V8/00 ,  G02B27/42 ,  G02B6/124

CPC classification number: G02B5/1823 ,  G02B6/0016 ,  G02B6/0035 ,  G02B6/34 ,  G02B27/0081 ,  G02B27/0172 ,  G02B27/4272 ,  G02B2027/0125

Abstract: A waveguide for a display apparatus comprising a planar optical waveguide part (20) for guiding light to be displayed, an input diffraction grating (21) to diffract received light (7) along the optical waveguide part for guiding thereby, an intermediate diffraction grating (22) to receive diffracted light from the input diffraction grating and to expand the received light in a first dimension by diffraction (8), and an output diffraction grating (23) to receive the expanded light and to output the received expanded light (10) from the optical waveguide part by diffraction for display. The input diffraction grating is positioned so as to be located wholly within the geographical area of the intermediate grating, and the grating vectors of the input diffraction grating and the intermediate diffraction grating are oriented in different respective directions.

公开(公告)号：EP3084508A1

公开(公告)日：2016-10-26

申请号：EP14809902.1

申请日：2014-12-12

Applicant: BAE Systems PLC

Inventor： SIMMONDS, Michael David ,  FERNS, Anthony Robert

IPC: G02B27/00 ,  G02B5/18 ,  F21V8/00 ,  G02B27/42 ,  G02B6/124

CPC classification number: G02B5/1852 ,  B29D11/00663 ,  B29D11/00769 ,  B29D11/00875 ,  B29K2995/0026 ,  G02B5/1823 ,  G02B5/1847 ,  G02B6/0016 ,  G02B6/0035 ,  G02B6/0065 ,  G02B6/34 ,  G02B27/0081 ,  G02B27/0172 ,  G02B27/4272 ,  G02B2027/0125

Abstract: A method for manufacturing a waveguide for a display apparatus comprising providing a planar optical waveguide part (20), depositing upon the optical waveguide part a fluid material (11) curable to form an optically transparent solid, impressing (30) upon the fluid material an impression defining an input diffraction grating region, an intermediate diffraction grating region and an output diffraction grating region wherein the fluid material of the intermediate diffraction grating region is continuous with the fluid material of at least the input diffraction grating region, curing (45) the impressed fluid material to solidify said impression. The physical location of the input diffraction grating is located wholly within the geographical area of the intermediate grating, and the grating vectors of the input diffraction grating and the intermediate diffraction grating are oriented in different respective directions.

Abstract translation: 一种用于制造用于显示装置的波导的方法，包括：提供平面光波导部件（20）;在所述光波导部件上沉积可固化以形成光学透明固体的流体材料（11）;在所述流体材料上压印（30） 限定输入衍射光栅区域的印痕，中间衍射光栅区域和输出衍射光栅区域，其中中间衍射光栅区域的流体材料与至少输入衍射光栅区域的流体材料连续，固化（45）印刷 流体材料以固化所述印模。 输入衍射光栅的物理位置完全位于中间光栅的地理区域内，并且输入衍射光栅和中间衍射光栅的光栅矢量以不同的方向定向。

公开(公告)号：EP2215513B1

公开(公告)日：2015-05-20

申请号：EP08806735.0

申请日：2008-10-07

Applicant: BAE Systems PLC

Inventor： SIMMONDS, Michael David

IPC: G02B27/01 ,  G02B23/12

CPC classification number: G02B27/0172 ,  G02B6/00 ,  G02B27/0081 ,  G02B2027/0134 ,  G02B2027/0138

公开(公告)号：EP2215513A1

公开(公告)日：2010-08-11

申请号：EP08806735.0

申请日：2008-10-07

Applicant: BAE Systems PLC

Inventor： SIMMONDS, Michael David

IPC: G02B27/01 ,  G02B23/12

CPC classification number: G02B27/0172 ,  G02B6/00 ,  G02B27/0081 ,  G02B2027/0134 ,  G02B2027/0138

Abstract: A primary waveguide and a coupling waveguide are arranged so a user can view light from a forward scene through the primary waveguide. An image source generates an image which is diffractively coupled into the primary waveguide and internally reflected to an exit area for diffraction towards the user. Light from the forward looking scene is diffracted into the primary waveguide to be internally reflected and coupled to a image intensifier tube assembly. The image intensifier tube assembly enhances light from the forward looking scene and drives the image source such that an image of the enhanced light is overlaid on light from a forward scene at exit area.

公开(公告)号：EP1946179A1

公开(公告)日：2008-07-23

申请号：EP06794994.1

申请日：2006-10-18

Applicant: BAE Systems plc

Inventor： SIMMONDS, Michael David

IPC: G02B27/01

CPC classification number: G02B27/0172 ,  G02B5/30 ,  G02B2027/0118 ,  G02B2027/0123

Abstract: A helmet mounted display (30) includes a display source (31) arranged to be directly imaged by a primary relay optical arrangement (32) having relay optical elements (33A, 33B and 33C). Light exiting the primary relay optical (5) arrangement (32) indicated by ray traces (34A, 34B and 34C) continue towards a visor (35) which is arranged to reflect incident light to a exit pupil located in a convenient position for a viewer (36). The display source (31) includes a light source, beam splitter, reflective liquid (10) crystal display and a display source relay optical arrangement to provide an output image at an output diffuser screen. The image at the output screen is then directly imaged by the primary relay optical arrangement (32). Should the reflective liquid crystal display require modification or replacement (15) with a newer model, then the display source (31) can be redesigned to accommodate the new reflective liquid crystal display rather than re-engineering the primary relay optical arrangement (32) at greater expense.