SMOKE DETECTOR
    1.
    发明申请
    SMOKE DETECTOR 审中-公开
    烟雾探测器

    公开(公告)号:WO2004104959A3

    公开(公告)日:2005-03-24

    申请号:PCT/GB2004002213

    申请日:2004-05-24

    Inventor: BARRETT ROGER

    CPC classification number: G08B17/107 G08B17/113

    Abstract: A smoke detector has a light sensor positioned such that a light-receiving surface of the sensor extends generally parallel to a light beam generated by a SMD LED light source of the smoke detector. The light sensor has an enclosure surrounding the light-receiving surface, which enclosure has an aperture in a side facing the light beam. The front and rear edges of the aperture (with reference to the direction of the light beam), are positioned to create a balance of sensitivity to forward-scattered pale-coloured smoke and backward-scattered dark-coloured smoke. The use of a SMD LED in. association with a proximate means for redirecting and refocusing light allows for construction of a compact low-profile smoke detector. The SMD LED may be a laser diode.

    Abstract translation: 烟雾探测器具有光传感器,其被定位成使得传感器的光接收表面大致平行于由烟雾探测器的SMD LED光源产生的光束。 光传感器具有围绕光接收表面的外壳,该外壳在面向光束的一侧具有孔。 孔的前后边缘(相对于光束的方向)定位,以产生对前向散射的浅色烟雾和向后散射的深色烟雾的敏感度的平衡。 使用SMD LED与用于重定向和重新聚焦光的近似装置相关联,可以构造紧凑型低轮廓烟雾探测器。 SMD LED可以是激光二极管。

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