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    CROSSTALK SUPPRESSION IN A DIRECTIONAL BACKLIGHT
    3.
    发明公开
    CROSSTALK SUPPRESSION IN A DIRECTIONAL BACKLIGHT 有权
    关于管辖权还原在某种意义上依赖背光照明

    公开(公告)号：EP2850487A4

    公开(公告)日：2016-03-30

    申请号：EP13790267

    申请日：2013-05-15

    Applicant: REALD INC

    Inventor： ROBINSON MICHAEL G ,  WOODGATE GRAHAM J ,  HARROLD JONATHAN ,  SHARP GARY D ,  SCHUCK MILLER H

    IPC: F21S2/00 ,  F21V8/00 ,  G02F1/13357

    CPC classification number: H04N13/0413 ,  G02B6/0048 ,  G02B6/0051 ,  G02B6/0055 ,  G02B6/0068 ,  G02B27/22 ,  H04N13/0418

    Abstract: A directional backlight for a transmissive spatial light modulator comprises a waveguide having an input end, first and second, opposed guide surfaces for guiding light along the waveguide, and a reflective end facing the input end for reflecting light from the input light back through the waveguide. An array of light sources that output light predominantly in an emission band and in a conversion band are disposed across the input end of the waveguide and light is directed into respective optical windows in output directions distributed in the lateral direction in dependence on the input positions. To achieve crosstalk suppression, disposed between the input end and the light sources is a reflection reduction element that comprises a filter arranged to absorb light in the conversion band preferentially over light in the emission band, thereby reducing reflections of light incident on the input end after reflection from the reflective end.

    POLARIZATION RECOVERY IN A DIRECTIONAL DISPLAY DEVICE
    5.
    发明公开
    POLARIZATION RECOVERY IN A DIRECTIONAL DISPLAY DEVICE 审中-公开
    极化恢复在某种意义上相关的显示设备

    公开(公告)号：EP2850483A4

    公开(公告)日：2016-03-09

    申请号：EP13790274

    申请日：2013-05-15

    Applicant: REALD INC

    Inventor： ROBINSON MICHAEL G ,  SHARP GARY D ,  WOODGATE GRAHAM J ,  HARROLD JONATHAN ,  SCHUCK MILLER H

    IPC: F21S2/00 ,  F21V8/00 ,  G02F1/13357

    CPC classification number: G02B6/0048 ,  F21V13/12 ,  G02B6/0056 ,  G02B27/225 ,  G02B27/2264

    Abstract: Disclosed is an imaging directional backlight polarization recovery apparatus including an imaging directional backlight with at least a polarization sensitive reflection component with optional polarization transformation and redirection elements. Viewing windows may be formed through imaging individual light sources and hence defines the relative positions of system elements and ray paths. The base imaging directional backlight systems provide substantially unpolarized light primarily for the illumination of liquid crystal displays (LCDs) resulting in at least 50% loss in light output when using a conventional sheet polarizer as input to the display. The invention herein introduces a polarization sensitive reflecting element to separate desired and undesired polarization states for the purposes of transformation and redirection of the reflected light for usable illumination. Polarization transformation and redirection can be provided by additional components such as retarder films and specular mirror surfaces.

    DIRECTIONAL BACKLIGHT
    6.
    发明公开
    DIRECTIONAL BACKLIGHT 有权

    公开(公告)号：EP2850486A4

    公开(公告)日：2016-03-16

    申请号：EP13790141

    申请日：2013-05-15

    Applicant: REALD INC

    Inventor： WOODGATE GRAHAM JOHN ,  ROBINSON MICHAEL G ,  HARROLD JONATHAN ,  SCHUCK MILLER H

    IPC: G02B27/22 ,  G09G3/20 ,  H04N13/04

    CPC classification number: G02B6/0078 ,  G02B6/0048 ,  G02B6/0055 ,  G02B6/0061 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0076 ,  G02F1/133524 ,  G02F2001/133567

    Abstract: Disclosed is a light guiding valve apparatus including at least one transparent stepped waveguide optical valve for providing large area collimated illumination from localized light sources, and at least one further illumination source. A stepped waveguide may be a stepped structure, where the steps include extraction features hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality. Light from a separate illumination source may pass through the transparent stepped waveguide optical valve to provide at least one further additional illumination function.

    POLARIZATION CONVERSION SYSTEM AND METHOD FOR STEREOSCOPIC PROJECTION
    8.
    发明公开
    POLARIZATION CONVERSION SYSTEM AND METHOD FOR STEREOSCOPIC PROJECTION 审中-公开
    偏振变换系统和方法立体投影

    公开(公告)号：EP2145215A4

    公开(公告)日：2011-12-28

    申请号：EP08769432

    申请日：2008-05-09

    Applicant: REALD INC

    Inventor： SCHUCK MILLER H ,  ROBINSON MICHAEL G ,  SHARP GARY D

    IPC: G02B5/30 ,  G02B27/26 ,  H04N13/04

    CPC classification number: G02B27/26 ,  G02B13/00 ,  G02B26/008 ,  H04N13/0434 ,  H04N13/0438

    Abstract: A polarization conversion system separates light from an unpolarized image source into a first state of polarization (SOP) and an orthogonal second SOP, and directs the polarized light on first and second light paths. The SOP of light on only one of the light paths is transformed to an orthogonal state such that both light paths have the same SOP. A polarization modulator temporally modulates the light on the first and second light paths to first and second output states of polarization. First and second projection lenses direct light on the first and second light paths toward a projection screen to form substantially overlapping polarization encoded images. The polarization modulator may be located before or after the projection lenses. The polarization-encoded images may be viewed using eyewear with appropriate polarization filters.

    POLARIZATION CONVERSION SYSTEMS FOR STEREOSCOPIC PROJECTION
    9.
    发明公开
    POLARIZATION CONVERSION SYSTEMS FOR STEREOSCOPIC PROJECTION 有权
    偏振变换系统立体投影

    公开(公告)号：EP2067066A4

    公开(公告)日：2011-11-16

    申请号：EP07843526

    申请日：2007-09-28

    Applicant: REALD INC

    Inventor： SCHUCK MILLER H ,  ROBINSON MICHAEL G ,  SHARP GARY D

    IPC: G02B27/26 ,  H04N13/00

    CPC classification number: G03B35/26 ,  G02B27/2264 ,  G02B27/26 ,  G02B27/283 ,  G03B21/142 ,  G03B21/28 ,  G03B35/22 ,  H04N13/0438

    Abstract: A polarization conversions system (PCS) is located in the output light path of a projector. The PCS may include a polarizing beam splitter, a polarization rotating element, a reflecting element, and a polarization switch. Typically, a projector outputs randomly-polarized light. This light is input to the PCS, in which the PCS separates p-polarized light and s-polarized light at the polarizing beam splitter. P-polarized light is directed toward the polarization switch on a first path. The s-polarized light is passed on a second path through the polarization rotating element (e.g., a half-wave plate), thereby transforming it to p-polarized light. A reflecting element directs the transformed polarized light (now p-polarized) along the second path toward the polarization switch. The first and second light paths are ultimately directed toward a projection screen to collectively form a brighter screen image in cinematic applications utilizing polarized light for three-dimensional viewing.

    MULTI-PRIMARY BACKLIGHT FOR MULTI-FUNCTIONAL ACTIVE-MATRIX LIQUID CRYSTAL DISPLAYS
    10.
    发明公开
    MULTI-PRIMARY BACKLIGHT FOR MULTI-FUNCTIONAL ACTIVE-MATRIX LIQUID CRYSTAL DISPLAYS 审中-公开
    MULTIPRIMÄRERÜCKBELEUCHTUNGFÜRMULTIFUNKTIONALE AKTIVMATRIX-FLÜSSIGKRISTALLANZEIGEN

    公开(公告)号：EP2941667A4

    公开(公告)日：2016-12-14

    申请号：EP14735362

    申请日：2014-01-03

    Applicant: REALD INC ,  SCHUCK MILLER H ,  SHARP GARY D ,  MCKNIGHT DOUGLAS J ,  NORTON TERRY

    Inventor： SCHUCK MILLER H ,  SHARP GARY D ,  MCKNIGHT DOUGLAS J ,  NORTON TERRY

    IPC: G02F1/13357 ,  F21S2/00

    CPC classification number: G09G3/3648 ,  G02F1/133603 ,  G02F1/133615 ,  G02F2001/133614 ,  G02F2001/133622 ,  G02F2001/133624 ,  G09G3/003 ,  G09G3/3413 ,  G09G2310/024 ,  H04N13/0431

    Abstract: A direct view display provides a light modulating panel and a backlight including first and second sets of spectral emitters. Several modes of operation may be provided including an advanced 2D mode, and an enhanced color gamut mode employing simultaneous illumination of the first and second set of spectral emitters. Another embodiment may be an optical structure for a multi-functional LCD display with wide color gamut and high stereo contrast. The optical structure may also be used to produce more saturated colors for a wider display color gamut and also may be used to produce a brighter backlight structure through light recycling of the wider bandwidth light back into the optical structure.

    Abstract translation: 直视图显示器提供光调制面板和包括第一组和第二组光谱发射器的背光。 可以提供几种操作模式，包括高级2D模式和采用第一和第二组光谱发射器的同时照明的增强色域模式。 另一个实施例可以是具有宽色域和高立体对比度的多功能LCD显示器的光学结构。 光学结构也可以用于产生更宽的显示色域的饱和颜色，并且还可以用于通过将更宽带宽的光的光再循环回到光学结构中来产生更亮的背光结构。

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