Media discriminating and media presence sensor Patent #: 5139339
ApplicationNo. 681592 filed on 07/29/1996
US Classes:250/341.8, Measuring infrared radiation reflected from sample250/341.2Including probe
ExaminersPrimary: Glick, Edward J.
Foreign Patent References
International ClassG01J 005/08
Foreign Application Priority Data1995-07-31 GB
AbstractA surface sensor device (1) with an electromagnetic radiation emitter (3) and a radiation detector (2) disposed on opposite sides of an instrument outlet (6), which instrument outlet (6) is required to be placed in close proximity to a surface (30). The surface sensor (1) also having a member (8) disposed in the path of the emitted radiation and the radiation reflected from the surface (30). The member (8) allows a portion of the emitted radiation to pass within it from the emitter (3) to the detector (2) while providing a path for a further portion of the radiation to pass through the member (8) towards the surface (30) for scattering and reflection by which means light is returned to the member (8) back towards the detector (2).