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    IMPROVEMENTS IN OR RELATING TO HEAD MOUNTED DISPLAY SYSTEMS
    1.
    发明申请
    IMPROVEMENTS IN OR RELATING TO HEAD MOUNTED DISPLAY SYSTEMS 审中-公开
    改进或涉及头部安装显示系统

    公开(公告)号：WO2009050504A1

    公开(公告)日：2009-04-23

    申请号：PCT/GB2008/050919

    申请日：2008-10-07

    Applicant: BAE SYSTEMS PLC ,  SIMMONDS, Michael David

    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 (12) and a coupling waveguide (14) are arranged soa user (16) can view light from a forward scene (18) through the primary waveguide (12). An image source (20) generates an image which isdiffractivelycoupled into the primary waveguide (12) and internally reflected to an exit area (34) for diffraction towards the user (16). Light from the forward looking scene (18) isdiffracted into the primary waveguide (12) to be internally reflected and coupled to a image intensifier tube assembly (42). The image intensifier tube assembly (42) enhances light from the forward looking scene (18) and drives the image source (20) such that an image of the enhanced light is overlaid on light from a forward scene (18) at exit area (34).

    Abstract translation: 主波导（12）和耦合波导（14）被布置成使得用户（16）可以通过主波导（12）观看来自正向场景（18）的光。 图像源（20）产生与主波导（12）非常耦合并且内部反射到出射区域（34）的用于向用户（16）衍射的图像。 来自前视场景（18）的光被扩散到主波导（12）中以被内部反射并耦合到图像增强管组件（42）。 图像增强管组件（42）增强来自前景场景（18）的光并且驱动图像源（20），使得增强光的图像被覆盖在出射区域（34）处的前向场景（18）的光上 ）。

    A DISPLAY SOURCE
    2.
    发明申请
    A DISPLAY SOURCE 审中-公开
    显示源

    公开(公告)号：WO2007054738A1

    公开(公告)日：2007-05-18

    申请号：PCT/GB2006/050337

    申请日：2006-10-18

    Applicant: BAE SYSTEMS plc ,  SIMMONDS, Michael David

    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.

    Abstract translation: 头盔安装显示器（30）包括布置成由具有中继光学元件（33A，33B和33C）的主中继光学装置（32）直接成像的显示源（31）。 离开由光线迹线（34A，34B和34C）指示的主继电器光学（5）布置（32）的光继续朝向遮阳板（35），遮阳板（35）被布置成将入射光反射到位于观察者的方便位置的出射光瞳 （36）。 显示源（31）包括光源，分束器，反射液体（10）晶体显示器和显示源中继光学装置，以在输出扩散器屏幕处提供输出图像。 然后，输出屏幕上的图像由主中继光学装置（32）直接成像。 如果反射式液晶显示器需要使用较新的型号进行修改或更换（15），则可以重新设计显示源（31）以适应新的反射型液晶显示器，而不是重新设计主继电器光学布置（32） 更大的费用。

    EYE TRACKING FOR HEAD-WORN DISPLAY
    3.
    发明申请
    EYE TRACKING FOR HEAD-WORN DISPLAY 审中-公开

    公开(公告)号：WO2019122808A1

    公开(公告)日：2019-06-27

    申请号：PCT/GB2018/053449

    申请日：2018-11-29

    Applicant: BAE SYSTEMS PLC

    Inventor： MILLS, Rory, Thomas, Alexander ,  SIMMONDS, Michael David

    IPC: G02B27/14 ,  G02B27/01 ,  G02B27/00

    Abstract: A display assembly (105) for mounting on a head-worn device such as a helmet, and having a partially reflective surface located in a field of view of a user, a display projector (40, 50, 200) for projecting light towards the user via the partially reflective surface, a sensor (60, 210) for use in tracking an eye of the user, and a partially reflective imaging surface (120, 220, 225) located in the field of view. The sensor is aligned to receive light forming an image of an eye reflected by the partially reflective imaging surface, the image being for use in the eye-tracking. By using a reflected image, the camera location can be arranged to improve the potentially conflicting needs of keeping the field of view clear, and of having an image from directly in front of the eye, and of limiting the weight and size and imbalance of the helmet. The visor may be used as the partially reflective surface. IR Illumination may be provided by the display projector.

    DISPLAY COMPRISING AN OPTICAL WAVEGUIDE AND SWITCHABLE DIFFRACTION GRATINGS AND METHOD OF PRODUCING THE SAME
    4.
    发明申请
    DISPLAY COMPRISING AN OPTICAL WAVEGUIDE AND SWITCHABLE DIFFRACTION GRATINGS AND METHOD OF PRODUCING THE SAME 审中-公开
    显示包含光波导和可切换衍射光栅的显示器及其生产方法

    公开(公告)号：WO2014091204A1

    公开(公告)日：2014-06-19

    申请号：PCT/GB2013/053184

    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: 公开了一种用于制造光学显示器的装置，其包括可在衍射状态和非衍射状态之间切换的可转换衍射光栅的光波导（1）和一对（10,16）。 一对不可切换的衍射光栅（2,14）被布置成接收来自一个可切换光栅的衍射光，以沿着光波导引导传播，并出射到另一个可切换的光栅以进行观看。 该对不可切换光栅被调谐到第一工作波长的光，而一对可切换光栅被调谐到不同的光的工作波长，以将该光衍射到/从与非非可切换光的共同的视场 可切换的光栅，使得两个波长的光占据相同的视野。

    IMPROVEMENTS IN AND RELATING TO WAVEGUIDES
    7.
    发明公开
    IMPROVEMENTS IN AND RELATING TO WAVEGUIDES 审中-公开
    改进技术以及与纤维

    公开(公告)号：EP3084509A1

    公开(公告)日：2016-10-26

    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.

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