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CN107036940A 粒子检测传感器 失效 - 放弃专利权

粒子检测传感器
摘要：
提供一种粒子检测传感器，既成本低又能抑制因投光元件的温度而出现的光输出的变化导致的检测精度不均。该粒子检测传感器具备：投光元件(10)，向检测区域DA射出光；受光元件(20)，接受散射光，该散射光是来自投光元件(10)的光因检测区域DA的粒子而散射的光；第一支承部件(81a)，支承受光元件(20)；以及第二支承部件(81b)，支承投光元件(10)，该第二支承部件(81b)的线性膨胀系数与第一支承部件(81a)不同，第一支承部件(81a)具有用于设置受光元件(20)的第一设置部(81a1)、以及用于设置第二支承部件(81b)的第二设置部(81a2)，第一设置部(81a1)和第二设置部(81a2)，被设置在与投光元件(10)的光轴J1或者受光元件(20)的光轴J2之间的距离不同的位置。
摘要（英）：

A particle sensor is provided. The particle sensor includes a light projector that projects light to a detection area. A light receiver receives scattered light. The scattered light is light from the light projector that has been scattered by particles in the detection area. A first support supports the light receiver. A second support supports the light projector and has a linear expansion coefficient different from a linear expansion coefficient of the first support. The first support includes a first placement region in which the light receiver is disposed and a second placement region in which the second support is disposed. The first placement region and the second placement region are located at different distances from at least one of an optical axis of the light projector and an optical axis of the light receiver.

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