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    • 68. 发明授权
    • Light-emitting device
    • 发光装置
    • US08789993B2
    • 2014-07-29
    • US13392970
    • 2010-09-07
    • Michel Cornelis Josephus Marie VissenbergGiorgia Tordini
    • Michel Cornelis Josephus Marie VissenbergGiorgia Tordini
    • F21V7/04
    • G02B6/005G02B6/0035
    • It is disclosed a light-emitting device (100) comprising a light guide (101), comprising a first (101a) and a second (101b) output surface portion. The light-emitting device (100) further comprises a plurality of light-outcoupling elements (103) and an array of beam-forming structures (104). The light-outcoupling elements (103) are positionally arranged relatively to the beam-forming structures (104) such as to enable light that is impinging on at least one of the light-outcoupling elements (103) and subsequently being incident on a surface portion of a beam-forming structure (104) to be within a predetermined angle interval with respect to the surface portion. Each of the beam-forming structures (104) is adapted to enable light leaving a surface portion of the beam-forming structure (104) to be within a predetermined angle interval with respect to the surface portion. Both direct, functional light and indirect light may be provided, an increased optical efficiency may be achieved, glare control properties of the light outputted from the light-emitting device (100) may be improved and/or the ratio of light outputted from the first surface portion (101a) of the light guide (101) to light outputted from the second surface portion (101b) of the light guide (100) may be adjusted.
    • 公开了一种包括导光体(101)的发光装置(100),其包括第一(101a)和第二(101b)输出表面部分。 发光器件(100)还包括多个光输出耦合元件(103)和波束形成结构(104)阵列。 光输出耦合元件(103)相对于波束形成结构(104)位置布置,以使得能够照射到至少一个光输出耦合元件(103)并随后入射在表面部分 的波束形成结构(104)相对于表面部分处于预定的角度间隔内。 每个波束形成结构(104)适于使离开波束形成结构(104)的表面部分的光能够相对于表面部分在预定的角度间隔内。 可以提供直接的,功能性的光和间接光,可以实现提高的光学效率,可以提高从发光器件(100)输出的光的眩光控制特性和/或从第一 可以调整导光体(101)的表面部(101a)与从导光体(100)的第二表面部(101b)输出的光。