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2. 发明授权

EP2279374B1 OPTICAL ELEMENT FOR ASYMMETRIC LIGHT DISTRIBUTION 有权转让
标题翻译： OPTISCHES ELEMENTFÜRASYMMETRISCHE LICHTVERTEILUNG
公开(公告)号：EP2279374B1
公开(公告)日：2016-10-12
申请号：EP09750219.9
申请日：2009-05-13
申请人： Philips Lighting Holding B.V.
发明人： VAN OERS, Denis, J., C. , VAN ELMPT, Rob, F., M.
IPC分类号： F21V5/08 , F21V7/00 , G02B27/09 , A01G9/26 , F21V5/04 , G02B19/00
CPC分类号： F21V5/08 , A01G9/26 , F21V5/04 , F21V7/0091 , F21Y2115/10 , G02B19/0028 , G02B19/0061 , G02B27/095 , G02B27/0983 , Y02A40/274
摘要： The present invention relates to an optical element (2) for collimating light from a light source (3), said optical element (2) having an in-coupling side (5) arranged to receive said light, an out-coupling side (6) arranged to allow for emission of collimated light, and an element body extending from said in-coupling side (5) to said out-coupling side (6), the element body having a cross-section perpendicular to an optical axis (z) defined by an x-5 axis and a y-axis being perpendicular to each other, wherein said optical element (2) has an x-curvature along said x-axis and a y-curvature along said y-axis, said y-curvature being greater than said x-curvature, thereby enabling for a light distribution of said collimated light emitted from said out-coupling side (6) to have a cross-section of an asymmetric shape (CE) perpendicular to said optical axis (z). The present invention also relates to a lighting system (1) comprising such an optical element (2). An advantage with the present invention is that it may provide asymmetric light distribution with an increased beam-width difference in two perpendicular viewing directions.
摘要翻译：本发明涉及一种用于准直来自光源（3）的光的光学元件（2），所述光学元件（2）具有设置成接收所述光的耦合侧（5），出耦合侧（6 ）和允许从所述耦合侧（5）延伸到所述输出耦合侧（6）的元件本体，所述元件主体具有垂直于光轴（z）的横截面，由x-5轴和y轴彼此垂直定义，其中所述光学元件（2）具有沿所述x轴的x曲率和沿所述y轴的y曲率，所述y曲率大于所述x曲率，从而能够使从所述外耦合侧（6）发射的所述准直光的光分布具有垂直于所述光轴（z）的不对称形状（CE）的横截面。本发明还涉及包括这种光学元件（2）的照明系统（1）。本发明的优点在于它可以提供在两个垂直观察方向上具有增加的波束宽度差的不对称光分布。

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