Single light source uniform parallel light curtain
    2.
    发明公开
    Single light source uniform parallel light curtain 有权
    Gleichförmiges,Lichtgitter mit einer einzigen Lichtquelle

    公开(公告)号:EP1935383A1

    公开(公告)日:2008-06-25

    申请号:EP07123297.9

    申请日:2007-12-14

    申请人: Alcon, Inc.

    摘要: A continuous high resolution fluid level monitoring system (300) is provided by embodiments of the present invention. This continuous high resolution fluid level monitoring system includes a unique fluid level sensor having a point light source (202), parabolic reflector (204), sensor array (308), and detection, processing and control system (310). The point light source illumines a parabolic reflector wherein the point light source is located at the focus of the parabolic reflector. The parabolic reflector reflects light from the point light source to produce a parallel light curtain (210). This parallel light curtain is parallel to an axis of symmetry of the parabolic reflector. The parallel light curtain illumines a chamber (302) such as a chamber in an ophthalmic surgical device used to contain surgical fluid (304). The sensor array coupled to the chamber detects the parallel light curtain illuminating the chamber. The sensor array provides an output to a detection/processing/control system in order to determine the fluid level within the chamber. This optical method of determining the surgical fluid levels may be advantageous in that it prevents physical contamination of the surgical fluids.

    摘要翻译: 由本发明的实施例提供连续的高分辨率液面监测系统(300)。 这种连续的高分辨率液位监测系统包括具有点光源(202),抛物面反射器(204),传感器阵列(308)和检测,处理和控制系统(310)的独特液位传感器。 点光源照亮抛物面反射器,其中点光源位于抛物面反射器的焦点处。 抛物面反射器反射来自点光源的光,以产生平行光幕(210)。 该平行光幕平行于抛物线反射器的对称轴。 平行光幕照射在用于容纳外科手术液体的眼科手术装置中的腔室(302),例如腔室(304)。 耦合到室的传感器阵列检测照射室的平行光幕。 传感器阵列为检测/处理/控制系统提供输出,以确定腔室内的液位。 这种确定手术液体水平的光学方法可能是有利的,因为其防止手术流体的物理污染。