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    High elastic modulus projection screen substrates
    11.
    发明申请
    High elastic modulus projection screen substrates 有权

    公开(公告)号：US20160018725A1

    公开(公告)日：2016-01-21

    申请号：US14717821

    申请日：2015-05-20

    Applicant: RealD Inc.

    Inventor： Gary D. Sharp ,  Kevin Curtis ,  David A. Coleman

    IPC: G03B21/56 ,  G02B27/48

    CPC classification number: G03B21/562 ,  G02B27/48 ,  G03B21/56 ,  G03B21/60 ,  G03B21/606

    Abstract: A stiffening strip at selected edges of a screen may enable the use and mounting of a high-elastic modulus substrate screen material. Such screen materials may be engineered to provide polarization-preserving characteristics, and be applied to or part of the high-elastic modulus substrate. Furthermore, the stiffening strip may enable the use of screen vibration techniques to reduce speckle in display applications that use projection screens, particularly those display applications using illumination sources prone to speckle such as laser-based projection. The screen vibration may be provided by a vibrating device attached to the stiffening strip.

    Stereoscopic eyewear with stray light management
    12.
    发明申请
    Stereoscopic eyewear with stray light management 有权
    立体眼镜带杂散光管理

    公开(公告)号：US20140293418A1

    公开(公告)日：2014-10-02

    申请号：US14301129

    申请日：2014-06-10

    Applicant: RealD Inc.

    Inventor： Gary D. Sharp ,  David A. Coleman

    IPC: G02B27/26 ,  G02C13/00 ,  G02B1/11

    CPC classification number: G02B27/26 ,  G02B1/11 ,  G02C7/16 ,  G02C13/001 ,  Y10T29/31

    Abstract: Disclosed embodiments relate to eyewear configured to reduce stray light. An exemplary embodiment of the eyewear accounts for various design factors, including the cross sectional profile of the rim, the micro topography of the rim surface, the reflectivity, the theatre or room geometry, proximity of the eye to the lens, lens size, and the screen gain. An exemplary eyewear includes lenses connected to the rims of a frame, and a path may be defined through a maximum height of the outer flange portion of a rim and a maximum height of the inner flange portion of the rim section. The path may be inclined at an angle relative to an angle α relative to a longitudinal axis defined by the lenses.

    Abstract translation: 公开的实施例涉及配置为减少杂散光的眼镜。 眼镜的示例性实施例涉及各种设计因素，包括边缘的横截面轮廓，轮缘表面的微观形貌，反射率，剧院或房间几何形状，眼睛与镜片的接近度，镜片尺寸和 屏幕增益。 示例性的眼镜包括连接到框架的边缘的透镜，并且可以通过边缘的外凸缘部分的最大高度和边缘部分的内凸缘部分的最大高度限定路径。 路径可以相对于由透镜限定的纵向轴线相对于角度α成一定角度倾斜。

    Polarization conversion system and method for projecting polarization encoded imagery
    13.
    发明申请
    Polarization conversion system and method for projecting polarization encoded imagery 有权

    公开(公告)号：US20140253879A1

    公开(公告)日：2014-09-11

    申请号：US14281727

    申请日：2014-05-19

    Applicant: RealD Inc.

    Inventor： Miller H. Schuck ,  Michael G. Robinson ,  Gary D. Sharp

    IPC: G02B27/26

    CPC classification number: G02B27/26 ,  G02B13/00 ,  G02B26/008 ,  G02B27/2264 ,  H04N13/337 ,  H04N13/341

    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.

    Speckle reduction using screen vibration techniques and apparatus
    14.
    发明申请
    Speckle reduction using screen vibration techniques and apparatus 有权

    公开(公告)号：US20140247484A1

    公开(公告)日：2014-09-04

    申请号：US14275765

    申请日：2014-05-12

    Applicant: RealD Inc.

    Inventor： Kevin Curtis ,  David A. Coleman ,  Gary D. Sharp

    IPC: G02B27/48 ,  G03B21/56

    CPC classification number: G02B27/48 ,  G03B21/56 ,  G03B21/562 ,  G03B31/00

    Abstract: Disclosed herein are systems and related methods for reducing speckle on display screen. More specifically, screen vibration is used to reduce speckle, and in accordance with the disclosed principles, the vibration may be achieved by using wave-based actuation (e.g., acoustic or electromagnetic waves) to vibrate the screen. In an exemplary embodiment, a speckle reducing system may comprise at least one actuating element located proximate to, but not in physical contact with, a display screen. In addition, the at least one actuating element may be configured to generate waves directed towards the display screen. When the waves impact the display screen, the waves impart vibration to the display screen.

    Crosstalk suppression in a directional backlight
    16.
    发明申请
    Crosstalk suppression in a directional backlight 有权
    定向背光中的串扰抑制

    公开(公告)号：US20130307946A1

    公开(公告)日：2013-11-21

    申请号：US13836443

    申请日：2013-03-15

    Applicant: REALD INC.

    Inventor： Michael G. Robinson ,  Graham J. Woodgate ,  Jonathan Harrold ,  Gary D. Sharp ,  Miller H. Schuck

    IPC: H04N13/04 ,  F21V8/00

    CPC classification number: H04N13/315 ,  G02B6/0048 ,  G02B6/0051 ,  G02B6/0055 ,  G02B6/0068 ,  G02B27/22 ,  H04N13/32

    Abstract: Disclosed is a light guiding valve apparatus including a light valve, a two dimensional light emitting element array and an input side arranged to reduce light reflection for providing large area directional illumination from localized light emitting elements with low cross talk. A waveguide includes a stepped structure, in which the steps may include extraction features hidden to guided light propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Stray light falling onto a light input side of the waveguide is at least partially absorbed.

    Abstract translation: 公开了一种导光阀装置，其包括光阀，二维发光元件阵列和输入侧，其布置成减少光反射，以从具有低串扰的局部发光元件提供大面积定向照明。 波导包括阶梯结构，其中步骤可以包括对在第一向前方向上传播的引导光隐藏的提取特征。 在第二反向传播的返回光可以由特征折射或反射，以提供离开波导的顶表面离散的照明光束。 落在波导的光输入侧的杂散光至少部分被吸收。

    3D projection system
    17.
    发明授权
    3D projection system 有权

    公开(公告)号：US10739611B2

    公开(公告)日：2020-08-11

    申请号：US16221107

    申请日：2018-12-14

    Applicant: RealD Inc.

    Inventor： Miller H. Schuck ,  Michael G. Robinson ,  Gary D. Sharp

    IPC: G02B30/35 ,  G02B30/25 ,  H04N13/337 ,  H04N13/341 ,  G02B30/24 ,  G02B26/00 ,  G02B13/00

    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
    18.
    发明申请
    Polarization conversion systems for stereoscopic projection 审中-公开

    公开(公告)号：US20190011825A1

    公开(公告)日：2019-01-10

    申请号：US15933639

    申请日：2018-03-23

    Applicant: RealD Inc.

    Inventor： Miller H. Schuck ,  Michael G. Robinson ,  Gary D. Sharp

    IPC: G03B35/26 ,  G03B35/22 ,  G03B21/28 ,  G02B27/22 ,  H04N13/341 ,  G02B27/28 ,  G02B27/26 ,  G03B21/14

    Abstract: A polarization conversion 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.

    High elastic modulus projection screen substrates
    20.
    发明授权
    High elastic modulus projection screen substrates 有权

    公开(公告)号：US09709883B2

    公开(公告)日：2017-07-18

    申请号：US14717821

    申请日：2015-05-20

    Applicant: RealD Inc.

    Inventor： Gary D. Sharp ,  Kevin Curtis ,  David A. Coleman

    IPC: G03B21/56 ,  G03B21/606 ,  G02B27/48 ,  G03B21/60

    CPC classification number: G03B21/562 ,  G02B27/48 ,  G03B21/56 ,  G03B21/60 ,  G03B21/606

    Abstract: A stiffening strip at selected edges of a screen may enable the use and mounting of a high-elastic modulus substrate screen material. Such screen materials may be engineered to provide polarization-preserving characteristics, and be applied to or part of the high-elastic modulus substrate. Furthermore, the stiffening strip may enable the use of screen vibration techniques to reduce speckle in display applications that use projection screens, particularly those display applications using illumination sources prone to speckle such as laser-based projection. The screen vibration may be provided by a vibrating device attached to the stiffening strip.

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