Reflection Sensing System

摘要

A reflection sensing system comprising a body, an illuming module and a detecting module. The body is made of LCP. The illuming module includes a first accommodating space and an LED, and the detecting module includes a light detector. The first accommodating space is disposed in the body and has a first opening at one end. In the first accommodating space, the neighboring region relative to the first opening is parabolic or approximately parabolic. At an end at an inner side of the first accommodating space near the light detector, at least one cross-section near the first opening is not parabolic or approximately parabolic. The LED is disposed at the focus of the first accommodating space and aligned towards the first opening. The light detector of the detecting module is disposed in the body and generates a sensing signal after receiving light.