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公开(公告)号:WO2014098743A1
公开(公告)日:2014-06-26
申请号:PCT/SE2013/051535
申请日:2013-12-17
发明人: BERGSTRÖM, Håkan , WASSVIK, Ola , CRAVEN-BARTLE, Thomas , VON HOFSTEN, Olov , LE NORMAND, Björn , EK, Leif
CPC分类号: G06F3/0421 , G02B6/0013 , G02B6/0023 , G02B6/0088 , G06F3/0416 , G06F3/0428 , G06F2203/04103 , G06F2203/04109
摘要: A touch-sensitive apparatus operates by light frustration (FTIR) and comprises a light transmissive panel (1) with a front surface (5) and a rear surface (6). Light emitters (2) are optically coupled to the panel (1) at entry ports along a periphery region of the panel (1), and light detectors (3) are optically coupled to the panel (1) at exit ports along the periphery region for detecting light transmitted inside the panel (1). At least one optical sheet (20) is provided on the rear surface (6) in the periphery region. In an outcoupling installation, the light detectors (3) are arranged at the respective optical sheet (20) to receive, on a respective light-sensitive surface (3A), light from the optical sheet (20), and each light detector (3) is arranged with the light-sensitive surface (3A) essentially perpendicular to the rear surface (6). In an incoupling installation, each light emitter (2) is arranged at the respective optical sheet (20) to emit diverging light with a main direction that is essentially parallel to the rear surface (6) such that a portion of the diverging light impinges on the optical sheet (20) so as to define a respective entry port.
摘要翻译: 触摸敏感设备通过光挫败(FTIR)操作,并且包括具有前表面(5)和后表面(6)的透光面板(1)。 光发射器(2)沿着面板(1)的外围区域的进入端口光学耦合到面板(1),并且光检测器(3)沿着周边区域的出口端口光耦合到面板(1) 用于检测在面板(1)内部透射的光。 至少一个光学片(20)设置在周边区域的后表面(6)上。 在外耦合装置中,光检测器(3)布置在相应的光学片(20)处,以在相应的感光表面(3A)上接收来自光学片(20)的光和每个光检测器(3) )与感光表面(3A)布置成基本上垂直于后表面(6)。 在接合装置中,每个光发射器(2)布置在相应的光学片(20)处以发射具有基本上平行于后表面(6)的主方向的发散光,使得发散光的一部分撞击 光学片(20),以限定相应的入口。