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    • 7. 发明授权
    • Lighting devices with patterned printing of diffractive extraction features
    • 具有衍射提取特征的图案印刷的照明装置
    • US08834004B2
    • 2014-09-16
    • US13572813
    • 2012-08-13
    • David S. ThompsonZhaohui YangMatthew S. StayVivian W. Jones
    • David S. ThompsonZhaohui YangMatthew S. StayVivian W. Jones
    • F21V8/00
    • G02B6/0058G02B5/1819G02B6/0035G02B6/0036G02B6/0038G02B6/005G02B6/006
    • Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed.
    • 扩展区域照明装置包括在导光体的主表面上的光导和衍射表面特征,至少一些衍射表面特征适于将导模光耦合到光导中。 衍射特征包括设置在主表面的相应第一和第二部分上的第一和第二衍射特征。 包括第二透光介质的图案化透光层光学地接触第二衍射特征而不是第一衍射特征。 第一透光介质光学地接触第一但不是第二衍射特征。 第一和第二部分可以限定标记,并且第一和第二衍射特征提供用于通过导光体观察物体的低失真,使得当导光模式光不在光导内传播时,标记对于用户来说不容易显现。 还公开了具有这种衍射特征的光学膜。
    • 9. 发明申请
    • LIGHTING DEVICES WITH PATTERNED PRINTING OF DIFFRACTIVE EXTRACTION FEATURES
    • 具有图像打印的差异提取特征的照明设备
    • US20140043850A1
    • 2014-02-13
    • US13572813
    • 2012-08-13
    • David S. ThompsonZhaohui YangMatthew S. StayVivian W. Jones
    • David S. ThompsonZhaohui YangMatthew S. StayVivian W. Jones
    • G02B5/18F21V13/02F21V8/00
    • G02B6/0058G02B5/1819G02B6/0035G02B6/0036G02B6/0038G02B6/005G02B6/006
    • Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed.
    • 扩展区域照明装置包括在导光体的主表面上的光导和衍射表面特征,至少一些衍射表面特征适于将导模光耦合到光导中。 衍射特征包括设置在主表面的相应第一和第二部分上的第一和第二衍射特征。 包括第二透光介质的图案化透光层光学地接触第二衍射特征而不是第一衍射特征。 第一透光介质光学地接触第一但不是第二衍射特征。 第一和第二部分可以限定标记,并且第一和第二衍射特征提供用于通过导光体观察物体的低失真,使得当导光模式光不在光导内传播时,标记对于用户来说不是明显的。 还公开了具有这种衍射特征的光学膜。
    • 10. 发明申请
    • COLORFUL DIFFRACTIVE LUMINAIRES PROVIDING WHITE LIGHT ILLUMINATION
    • 提供白光照明的有色差分荧光
    • US20140043847A1
    • 2014-02-13
    • US13572823
    • 2012-08-13
    • Zhaohui YangDavid S. ThompsonVivian W. Jones
    • Zhaohui YangDavid S. ThompsonVivian W. Jones
    • F21V13/02
    • F21S8/03F21S8/04F21W2121/00F21Y2103/10F21Y2103/33F21Y2113/13F21Y2115/10G02B6/0038G02B6/0058G02B6/0068G02B6/0076
    • Extended area lighting devices include a light guide and diffractive surface features on a major surface thereof. The diffractive surface features include diffractive features of different pitches in non-overlapping regions of the major surface tailored to extract guided-mode light of different colors from the light guide in different directions. The diffractive features extract light such that an ordinary user observes substantially different colors in different regions of the light guide, providing a colorful appearance. Notwithstanding this, the diffractive features also extract light such that the lighting device illuminates a reference surface, disposed at an intermediate distance from the light guide, with illumination light that is substantially uniform in color and substantially white. Optical films having diffractive features that can be used to construct such devices and light guides are also disclosed. The concept can also be extended to embodiments in which the uniform color illumination light is not substantially white.
    • 扩展区域照明装置在其主表面上包括光导和衍射表面特征。 衍射表面特征包括在主表面的非重叠区域中的不同间距的衍射特征,其被定制以从不同方向从光导中提取不同颜色的导模模式光。 衍射特征提取光,使得普通用户在光导的不同区域中观察到基本上不同的颜色,从而提供了丰富多彩的外观。 尽管如此,衍射特征还提取光,使得照明装置照亮设置在距离光导的中间距离处的参考表面,其具有基本上均匀的颜色和基本上白色的照明光。 还公开了具有可用于构造这种装置和光导的衍射特征的光学膜。 该概念也可以扩展到其中均匀的彩色照明光基本上不是白色的实施例。