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发明公开
CN101105475A 物体的通过检测装置 失效 - 权利终止

物体的通过检测装置
摘要：
本发明提供一种物体的通过检测装置，目的在于提高检测物体通过的S/N比。通过检测装置(300)构成为可检测特定空间(300a)内的物体(LD)的通过，并具备发送元件(310)、接收元件(320)以及遮蔽部件(330)。发送元件(310)具备振动发生源。接收元件(320)隔着特定空间(300a)配置在与发送元件(310)相对应的位置上。遮蔽部件(330)具有贯通孔(332)，并配置为介于发送元件(310)和接收元件(320)之间。从发送元件(310)发出的振动通过贯通孔(332)以及物体(LD)的通过路径到达接收元件(320)。另一方面，在特定空间(300a)内反射后的振动的利用接收元件(320)的接收被遮蔽部件(330)抑制。
摘要（英）：

Disclosed herein is a passage detection apparatus capable of detecting a passage of an object such as a micro drop in a specific space. The passage detection apparatus includes a transmitting device, a receiving device, and a shielding member. The transmitting device is provided with a vibration generating source. The receiving device is arranged at the position corresponding to the transmitting device across the specific space. The shielding member has a through-hole, and is arranged so as to be interposed between the transmitting device and the receiving device. The vibration transmitted from the transmitting device reaches the receiving device via the through-hole and a passage route of the object. On the other hand, the reception of the vibration, reflected in the specific space, by the receiving device is suppressed by the shielding member.

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