公开(公告)号：US20100118403A1

公开(公告)日：2010-05-13

申请号：US12291504

申请日：2008-11-10

Applicant: Pauli Laitinen ,  Max Lindfors ,  Lea Myyrylainen ,  Pasi Tapani Laakkonen

Inventor： Pauli Laitinen ,  Max Lindfors ,  Lea Myyrylainen ,  Pasi Tapani Laakkonen

IPC: F21V8/00 ,  G02B27/44 ,  G02B6/34

CPC classification number: G09F13/18 ,  G02B6/0036 ,  G02B6/006 ,  G02B6/0076

Abstract: A layered light guide structure has a number of planar light guides arranged in a stack to receive a number of different color light beams from the edge of the light guides. Each of the planar light guides has one or more diffractive structures imparted or provided on its upper surface. The diffractive structures on each light guide are configured to diffract light of a particular wavelength range so that they efficiently diffract the guided light within that light guide. The diffractive structure can be one or more keypad symbols such that the layered light guide structure can be used as a keypad. The symbols can be pixelized such that the pixels can have different color patterns. The diffractive structure can also be a simple patch so that the layered light guide structure can be used as a back-light source.

Abstract translation: 分层导光结构具有布置在堆叠中的多个平面光导，以从光导的边缘接收多个不同的彩色光束。 每个平面光导具有在其上表面上赋予或提供的一个或多个衍射结构。 每个光导的衍射结构被配置为衍射特定波长范围的光，使得它们有效地衍射该光导内的导光。 衍射结构可以是一个或多个小键盘符号，使得分层导光结构可以用作小键盘。 符号可以被像素化，使得像素可以具有不同的颜色图案。 衍射结构也可以是简单的贴片，使得分层导光结构可以用作背光源。