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    • 61. 发明申请
    • PANEL SWITCH
    • 面板开关
    • WO01098883A1
    • 2001-12-27
    • PCT/JP2001/005249
    • 2001-06-20
    • G06F3/042G06F3/033G06F3/041H01H35/00H01L31/0232G06F3/03
    • G06F3/0421H01H2239/022
    • A panel switch which can reduce or avoid detection errors caused by disturbing light beans. This panel switch (10) has a side wa11 (54), in which an aperture (56) is formed at an iris part (50), and a side wall (58), in which an aperture (60) is formed. A light beam (Ll) reaches a photodetector (44) through the apertures (56) and (60). Disturbing light beams (LS), whose optical axes are inc11ned from the optical axis of the light beam (Ll), are cut off by the side wa11 (54) and can not reach the photodetector (44). Even if the disturbing light beams (LS) pass through the aperture (56) of the side wa11 (54), they can not pass through the aperture (60), due to inclined optical axes, but go straight through a space (64) to be reflected by the side wall (58) in a direction different from a direction toward the photodetector (44). With this constitution, detection errors, which would be caused by disturbing lights beams (LS) detected by the photodetector (44), can be reduced or avoided.
    • 一种面板开关,可以减少或避免由干扰光豆引起的检测错误。 该面板开关(10)具有侧面wa11(54),其中在虹膜部分(50)处形成有孔(56),并且形成有孔(60)的侧壁(58)。 光束(L1)通过孔(56)和(60)到达光电检测器(44)。 其光轴从光束(L1)的光轴入射的干扰光束(LS)被侧面wa11(54)切断,不能到达光电检测器(44)。 即使干扰光束(LS)穿过侧面wa11(54)的孔径(56),它们由于倾斜的光轴而不能通过孔口(60),而是直线穿过空间(64) 被所述侧壁(58)沿与所述光电检测器(44)的方向不同的方向反射。 利用这种结构,可以减少或避免由光电检测器(44)检测到的干扰光束(LS)引起的检测误差。