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公开(公告)号:US20120113678A1
公开(公告)日:2012-05-10
申请号:US13263892
申请日:2010-04-16
CPC分类号: G02B6/0038 , G02B6/0025 , G02B6/0028 , G02B6/005 , G02B6/0063 , G02B6/0068 , G02B6/0076
摘要: The present invention aims to provide a light guide apparatus based on diffraction gratings. The apparatus comprises a light guide plate (11) comprising a first diffraction grating (13) located on a first surface of or inside the light guide plate (11); a first light source (12), coupled to a first side of the light guide plate (11); wherein the first diffraction grating (11) is configured to extract the light generated by the first light source (12) from the first surface of the light guide plate (11). Since the first diffraction grating (13) is invisibly small, users hardly notice any change of the light guide (11). When the light guide apparatus of the present invention is used as a book reader, the dark area produced when lifting the book reader in a direction away from the objects to be read is smaller than that of existing light guide apparatus based on microstructures, since the light exit angle is relatively small when using a diffraction grating.
摘要翻译: 本发明的目的在于提供一种基于衍射光栅的导光装置。 该装置包括导光板(11),该导光板包括位于导光板(11)的内表面或内部的第一衍射光栅(13); 耦合到所述导光板(11)的第一侧的第一光源(12); 其中所述第一衍射光栅(11)被配置为从所述导光板(11)的所述第一表面提取由所述第一光源(12)产生的光。 由于第一衍射光栅(13)不可见,所以用户几乎不注意到光导(11)的任何变化。 当将本发明的导光装置用作书本阅读器时,在远离被读取物的方向提升书本阅读器时产生的暗区比现有的基于微结构的导光装置小,因为 当使用衍射光栅时,光出射角相对较小。