OPTICAL DISPLACEMENT SENSOR ARRANGEMENT AND METHOD OF OPERATION

Abstract: an optical displacement sensor arrangement including a light source, a light detector, and a reflective moveable member. the reflective moveable member is moveable relative to the light detector. the light source is disposed to direct light onto the reflective moveable member such that the light is reflected by the reflective moveable member. the light detector is arranged to detect the light reflected by the reflective moveable member, wherein the light is indicative of movement of the reflective moveable member. the optical displacement sensor arrangement is arranged to generate measurement data representing movement of the reflective moveable member based on the light detected by the light detector. the optical displacement sensor arrangement is further arranged to determine a change in a signal generated therein indicative of a rupture of the reflective moveable member; and, in response to determining said signal change, change a power level of the light source.

Inventor(s): Hallvard Angelskår, Hans Jørgen Bang, Endre Rørlien Bjørsvik, Jakob Vennerød

CPC Classification: G01B9/02012 (Interferometers)

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