| 摘要 |
PURPOSE: A non-contact expression detection sensor is provided to perform a detection operation regardless of the kind of LCDs, the color of a PCB and detection distance by including a cleaning etching portion. CONSTITUTION: A non-contact detecting sensor includes a pendulum, a detection sensor, an LCD(Liquid Crystal Display) and a PCB(Printed Circuit Board). The pendulum falls down through air or spray, and the detection sensor detects the falling of the pendulum. As the detection sensor does not contact a product, the sensor is able to detect the product without any scratch on the product.
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