Backlighting system and display device
    21.
    发明授权
    Backlighting system and display device 有权
    背光系统和显示设备

    公开(公告)号:US08400397B2

    公开(公告)日:2013-03-19

    申请号:US12742698

    申请日:2008-11-13

    摘要: The invention relates to a backlighting system (10, 11, 12, 13, 14, 15, 16) and to a display device. The backlighting system comprises a plurality of segments (20, 21, 22, 23, 24) for selectively illuminating a predefined area of pixels of a display device. The backlighting system is configured for selectively controlling the intensity and/or color of the light emitted from the segment, each segment comprising a light source (30). The backlighting system (10, 11, 12, 13, 14, 15, 16) further comprises light barriers (40) for limiting the lateralspreading of the light emitted by the light source (30) towards the neighboring segments (20, 21, 22, 23, 24). The light barriers define grid-lines of a grid, and the light source (30) is arranged at a position on the grid-line which at least partially coincides with at least one of the light barriers. The effect of the measures according to the invention is that by positioning the light source of the segment on the same grid-line as the light barriers, the light from the light source spreads on either side of the light barrier towards the neighboring segments. This enables a predefined overlap of the light emitted by the segment towards its neighboring segments without the need for additional thickness of the backlighting system.

    摘要翻译: 本发明涉及背光系统(10,11,12,13,14,15,16)和显示装置。 背光系统包括用于选择性地照亮显示装置的预定区域的像素的多个段(20,21,22,23,24)。 背光系统被配置为选择性地控制从片段发射的光的强度和/或颜色,每个片段包括光源(30)。 背光系统(10,11,12,13,14,15,16)还包括光栅(40),用于限制由光源(30)发射的光朝向邻近片段(20,21,22)的边缘 ,23,24)。 光栅限定栅格的栅格线,并且光源(30)被布置在至少部分地与至少一个光栅重合的网格线上的位置。 根据本发明的措施的效果是通过将光源的光源定位在与光栅相同的格栅线上,来自光源的光在光栅的任一侧向邻近的片段扩散。 这使得能够将段发射的光预定重叠到其相邻的段,而不需要背光系统的额外厚度。

    Light collimator and lighting unit comprising such light collimator
    22.
    发明申请
    Light collimator and lighting unit comprising such light collimator 有权
    光准直仪和包括这种光准直仪的照明单元

    公开(公告)号:US20130322116A1

    公开(公告)日:2013-12-05

    申请号:US13985060

    申请日:2012-02-20

    IPC分类号: F21V8/00

    摘要: The invention provides a light collimator (1) comprising (a) an elongated light waveguide (100) having a waveguide longitudinal axis (101), a waveguide length (wl), a waveguide width (ww) and a waveguide height (wh); the waveguide height (wh) defined by the height between a first waveguide surface (151) and a second waveguide surface (152), the waveguide (100) having an aspect ratio of the waveguide length (wl) and the waveguide width (ww) wl/ww>1; the waveguide comprising a plurality of elongated cavities (110); each cavity (110) comprises a cavity longitudinal axis (111), a cavity length (cl), a cavity width (cw) and a cavity height (ch); each cavity having an aspect ratio of the cavity length (cl) and the cavity width (cw) cl/cw>1, wherein the cavity longitudinal axes (111) of the plurality of cavities (110) are perpendicular to the waveguide longitudinal axis (101); and (b) a diffuse reflective layer (200) adjacent to the second waveguide surface. The invention further provides a lighting unit (2) using such collimator (1).

    摘要翻译: 本发明提供一种光准直仪(1),其包括:(a)具有波导纵轴(101),波导长度(w1),波导宽度(ww)和波导高度(wh)的细长光波导(100) 由第一波导表面(151)和第二波导表面(152)之间的高度限定的波导高度(wh),波导长度(w1)和波导宽度(ww)的纵横比的波导(100) wl / ww> 1; 所述波导包括多个细长空腔(110); 每个空腔(110)包括空腔纵向轴线(111),空腔长度(cl),腔体宽度(cw)和空腔高度(ch); 每个空腔具有空腔长度(cl)和空腔宽度(cw)cl / cw> 1的纵横比,其中多个空腔(110)的空腔纵向轴线(111)垂直于波导纵向轴线 101); 和(b)邻近第二波导表面的漫反射层(200)。 本发明还提供一种使用这种准直仪(1)的照明单元(2)。

    Collimator comprising a prismatic layer stack, and lighting unit comprising such a collimator
    24.
    发明授权
    Collimator comprising a prismatic layer stack, and lighting unit comprising such a collimator 有权
    包括棱镜层叠层的准直器和包括这种准直器的照明单元

    公开(公告)号:US09383075B2

    公开(公告)日:2016-07-05

    申请号:US13985056

    申请日:2012-02-21

    摘要: The invention provides a collimator comprising a first collimator face, a second collimator face, and a stack region. The stack region comprises a first layer having a first prismatically shaped top face with a plurality of 1D arranged first prisms having first prism axes, and a second layer having a second prismatically shaped top face with a plurality of 1D arranged second prisms having second prism axes. The first and second prism axes are in a crossed configuration. In a direction from the first collimator face to the second collimator face, the index of refraction of material upstream of the first prismatically shaped top face is larger than that of material downstream of the first prismatically shaped top face, and the index of refraction of material upstream of the second prismatically shaped top face is larger than that of material downstream of the second prismatically shaped top face.

    摘要翻译: 本发明提供一种准直器,包括第一准直仪面,第二准直器面和堆叠区域。 堆叠区域包括具有第一棱镜状顶面的第一层和具有第一棱镜轴的多个1D布置的第一棱镜,以及具有第二棱镜形状的顶面的第二层,具有多个1D布置的第二棱镜,该第二棱镜具有第二棱镜轴 。 第一和第二棱镜轴处于交叉配置。 在从第一准直器面到第二准直器面的方向上,第一棱镜顶面上游的材料的折射率大于第一棱镜形顶面下游的材料的折射率,材料的折射率 第二棱镜形顶面的上游大于第二棱镜状顶面下游的材料的上游侧。

    Illumination system and display device
    25.
    发明授权
    Illumination system and display device 有权
    照明系统和显示设备

    公开(公告)号:US08128273B2

    公开(公告)日:2012-03-06

    申请号:US12446275

    申请日:2007-10-23

    IPC分类号: F21V7/04

    摘要: An illumination system for illuminating a display device includes a light-mixing chamber having a light-exit window, a rear wall situated opposite the light-exit window, and edge walls which extend between the light-exit window and the rear wall. A surface of the rear wall is substantially specularly reflective for specularly reflecting light impinging on the surface of the rear wall and having a relatively large angle of incidence with respect to an axis perpendicular to the rear wall. The illumination system further includes a light source light out-coupling elements. The light source emits light into the light-mixing chamber in a direction substantially parallel to the light-exit window. The illumination system further includes an angularly reflective filter applied at the light-exit window. The angularly reflective filter includes substantially transparent layers, each layer having a substantially uniform thickness. Each set of two adjacent layers of the angularly reflective filter has different refractive indexes.

    摘要翻译: 用于照明显示装置的照明系统包括具有出光窗的光混合室,与光出射窗相对的后壁,以及在出光窗和后壁之间延伸的边缘壁。 后壁的表面基本上是镜面反射的,用于镜面反射照射在后壁的表面上的光并且相对于垂直于后壁的轴具有相对大的入射角。 照明系统还包括光源光输出耦合元件。 光源在基本上平行于光出射窗的方向上将光发射到光混合室中。 照明系统还包括在光出射窗处施加的角度反射滤光片。 角度反射滤光器包括基本上透明的层,每个层具有基本均匀的厚度。 角度反射滤光片的两组相邻层的每一组具有不同的折射率。

    LIGHT GUIDING LAYER WITH INTEGRATED MIXING AND LIGHT EXTRACTING REGION
    26.
    发明申请
    LIGHT GUIDING LAYER WITH INTEGRATED MIXING AND LIGHT EXTRACTING REGION 失效
    具有集成混合和光提取区域的轻指导层

    公开(公告)号:US20100080508A1

    公开(公告)日:2010-04-01

    申请号:US12515421

    申请日:2007-11-20

    IPC分类号: G02B6/26 G02B6/10

    CPC分类号: G02B6/0018 G02B6/0055

    摘要: A light guiding layer comprises an optical incoupling structure (3) on which light from a light source (7) is incident, said optical incoupling structure (3) having a slanted surface (15) configured to give the light a first directional distribution by reflecting the light in a first general direction, by total internal reflection within the layer, towards a reflecting structure (5). The reflecting structure (5) is configured to give the light a second directional distribution by reflecting the light in a second general direction towards the optical incoupling structure (3), and at least a part of the light reflected in the second general direction is transmitted through the slanted surface (15) of the optical incoupling structure (3). A display unit, a segmented backlight, a luminaire, and a method is also disclosed.

    摘要翻译: 光引导层包括光入射结构(3),光源(7)入射光,所述光耦合结构(3)具有倾斜表面(15),该倾斜表面(15)被配置为通过反射 第一总方向的光通过层内的全内反射朝向反射结构(5)。 反射结构(5)被配置为通过在第二大致方向上将光反射到光学耦合结构(3)来给光提供第二方向分布,并且透射在第二大致方向上反射的光的至少一部分 通过光学耦合结构(3)的倾斜表面(15)。 还公开了显示单元,分段背光,照明设备和方法。

    Illumination system and display device
    28.
    发明授权
    Illumination system and display device 有权
    照明系统和显示设备

    公开(公告)号:US08567977B2

    公开(公告)日:2013-10-29

    申请号:US12527915

    申请日:2008-02-20

    IPC分类号: G09F13/04

    CPC分类号: G02F1/133606 G02B6/0053

    摘要: The invention relates to an illumination system (30) for illuminating a display (20) of a display device (10), and to a display device. The illumination system comprises a light source (S1, S2, S3) and an optical control layer (40). The light source emits light via the optical control layer to the display for illuminating a predefined area (A1, A2, A3) on the display. The light is emitted from the light source in a diverging beam in a particular direction (O1, O2, O3) towards the predefined area. The optical control layer comprises an arrangement of portions (46) having a refractive index which is different from the optical control layer. The portions are arranged to reflect a part of the diverging light towards the predefined area. The measures according to the invention have the effect that the arrangement of portions in the optical control layer confines both the light emitted by the light source and the backscattered light reflected back to the light source to substantially within the predefined area.

    摘要翻译: 本发明涉及一种用于照亮显示装置(10)的显示器(20)的照明系统(30)和显示装置。 照明系统包括光源(S1,S2,S3)和光学控制层(40)。 光源经由光学控制层向显示器发光,以便对显示器上的预定区域(A1,A2,A3)进行点亮。 光沿着特定方向(O1,O2,O3)的发散光束从光源发射到预定区域。 光学控制层包括具有不同于光学控制层的折射率的部分(46)的布置。 这些部分被布置成将发散光的一部分朝向预定区域反射。 根据本发明的措施具有这样的效果:光学控制层中的部分的布置将由光源发射的光和反射回光源的反向散射光限制在基本上在预定区域内。

    BEAM DIRECTION CONTROLLING DEVICE AND LIGHT-OUTPUT DEVICE

    公开(公告)号:US20110280018A1

    公开(公告)日:2011-11-17

    申请号:US13122595

    申请日:2009-10-02

    IPC分类号: F21V14/04 F21V14/00

    摘要: A beam direction controlling device (22; 30; 45; 60; 80), for controlling a direction of a light-beam emitted by a light-source (21) and passing through the beam direction controlling device (22; 30; 45; 60; 80). The beam direction controlling device comprises a first optical element (23, 31; 46; 61) having first (32) and second (33) opposing faces and being configured to change a direction of a plurality of parallel light-rays (40) incident on the beam direction controlling device (22; 30; 45; 60; 80) in an incident direction (ri) at the first face (32) of the first optical element (23, 31; 46; 61) to a primary direction (rp), different from the incident direction (ri), at the second face (33) of the first optical element (23, 31; 46; 61); and a second optical element (24, 32; 47; 62) having first (36) and second (37) opposing faces, the second optical element (24, 32; 47; 62) being arranged with the first face (36) of the second optical element (24, 32; 47; 62) facing the second face (33) of the first optical element (23, 31; 46; 61), the second optical element (24, 32; 47; 62) being configured to change a direction of the plurality of light-rays from the primary direction (rp) at the first face (36) of the second optical element (24, 32; 47; 62) to a secondary direction (rs) at the second face (37) of the second optical element (24, 32; 47; 62) depending on points (41) of incidence of the light-rays on the first face (36) of the second optical element (24, 32; 47; 62). The beam direction controlling device is configured to allow relative movement between the first and second optical element for controlling the points of incidence of the light rays on the first face of the second optical element, thereby enabling control of the direction of the light-beam.

    BACKLIGHT SYSTEM
    30.
    发明申请
    BACKLIGHT SYSTEM 审中-公开
    背光系统

    公开(公告)号:US20100315323A1

    公开(公告)日:2010-12-16

    申请号:US12446261

    申请日:2007-10-17

    IPC分类号: G09G3/36

    摘要: An adaptively controllable backlight system (1), having a plurality of individually controllable light-sources (3a-d) arranged on a backlight panel (2) to emit light in a direction substantially normal to the backlight panel (2). The backlight system (1) further comprises an outcoupling plate (5) arranged adjacent to the backlight panel (2), and adapted to capture a fraction of the light emitted by the light-sources (3a-d) and to outcouple the fraction of light through at least one outcoupling-surface (8a-b) of the outcoupling plate (5), and at least one light-guide (9, 10) arranged to receive the outcoupled light and adapted to guide the outcoupled light towards at least one outcoupling-surface (14a-b, 15a-b) of the light-guide (9, 10). Additionally, at least one sensor (16-19) is arranged to receive the guided outcoupled light and adapted to provide a signal indicative of at least one property of the outcoupled light, thereby enabling adaptive control of the backlight system (1).

    摘要翻译: 一种自适应控制的背光系统(1),其具有布置在背光面板(2)上的多个可独立控制的光源(3a-d),以在基本垂直于背光面板(2)的方向上发光。 背光系统(1)还包括邻近背光板(2)布置的外耦合板(5),并适于捕获由光源(3a-d)发射的光的一部分,并将 通过外耦合板(5)的至少一个外耦合表面(8a-b)的光,以及布置成接收输出耦合的光并适于将输出耦合的光引向至少一个的至少一个光导(9,10) 导光体(9,10)的外耦合表面(14a-b,15a-b)。 另外,至少一个传感器(16-19)被布置成接收被引导的输出耦合的光并且适于提供指示输出光的至少一个特性的信号,从而实现背光系统(1)的自适应控制。