Patent ID: 8873062
Filing Date: 2014-10-28
Classification: B60S,G01N

Abstract:
1. A sensor for sensing reflective material, the sensor comprising: a housing having a transparent window; a sensor mount located in the housing and angled away from a housing wall; a radiation emitter mounted in the sensor mount for emitting radiation along a first axis through the transparent window, the transparent window having an amount of the reflective material located thereon; and a radiation detector mounted in the sensor mount and located adjacent the radiation emitter, the radiation detector being located to receive reflected radiation from the reflective material along a second axis, the first axis being angled towards the second axis, wherein the radiation emitter includes two radiation emitters each located on either side of the radiation detector, the two radiation emitters being mounted to emit radiation along their respective first axes through the transparent window towards a common focal point on an outer surface of the transparent window.