Patent ID: 9007568
Filing Date: 2015-04-14
Classification: G01C,G01S

Abstract:
1. A distance detecting induction device, comprising: a casing comprising a main body part and two circular openings provided on a top surface of the main body part; focusing lenses comprising an emitting lens and a receiving lens provided at positions of the two circular openings respectively; a circuit board arranged inside the main body part and provided with a plurality of electronic components to treat signals; an emitting device comprising an infrared light emitting diode installed on the circuit board for emitting infrared light rays to the emitting lens; a receiving device comprising a distance detection induction module installed on the circuit board for inducing reflected light rays focused by the receiving lens; an emitting light guiding device arranged between the emitting lens and the emitting device the guiding device comprising a big circular hole provided at a position of the emitting lens and a small circular hole provided at a position of the emitting device, wherein the small circular hole and the big circular hole form a tapered infrared light emitting channel, wherein the small circular hole is smaller than an emitting surface of the emitting device such that a portion of the infrared light rays emitted by the emitting device is blocked from entering the light emitting channel.