PROBLEM TO BE SOLVED: To accurately acquire pulse waves by suppressing the influence of outside light.;SOLUTION: A light receiving part 20 includes a visible light cut filter 26 which covers the surface of a PD (photodiode) element 242 facing an LED element 142 and which transmits detection light, and opening control rubber 28 which is disposed to cover the surface of the visible light cut filter 26 facing the LED element 142 and which has an opening 282 to let the detection light emitted from the LED element 142 come into the PD element 242 via the visible light cut filter 26. By adopting such a structure that a part of the visible light cut filter 26 (a projecting part 262) present in a position enclosed by the opening 282 does not project to a light emission part 10 side from the light emission part 10 side of the opening control rubber 28, the opening control rubber 28 can inhibit the outside light transmitting an earlobe from coming into the PD element 242 via the visible light cut filter 26.;COPYRIGHT: (C)2011,JPO&INPIT
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机译：解决的问题：通过抑制外部光的影响来准确地获取脉搏波;解决方案：受光部20包括可见光截止滤光器26，该可见光截止滤光器26覆盖PD（光电二极管）元件242的面向LED元件142的表面。开口控制橡胶28设置成覆盖可见光截止滤光器26的面向LED元件142的表面，并具有开口282，该开口282使从LED元件142发射的检测光进入其中，并且该开口控制橡胶28透射检测光。 PD元件242经由可见光截止滤光器26。通过采用这样的结构，使得存在于由开口282包围的位置中的可见光截止滤光器26的一部分（突出部262）不向发光部10突出。从开度控制橡胶28的发光部10侧开始，开度控制橡胶28可以抑制透过耳垂的外部光经由可见光cu进入PD元件242。 t filter 26.; COPYRIGHT：（C）2011，JPO＆INPIT
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