Surface sensor device
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United States of America Patent
Stats
-
Mar 24, 1998
Grant Date -
N/A
app pub date -
Jul 29, 1996
filing date -
Jul 31, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A 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).
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