Use of an optical device for interferometric analysis of the surface condition of an object
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United States of America Patent
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Jul 29, 2014
Grant Date -
May 24, 2012
app pub date -
Dec 29, 2009
filing date -
Dec 29, 2008
priority date (Note) -
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Abstract
The instant disclosure describes an optical device for the interferometric analysis of the surface condition of an object, including: a light source; an optical fiber capable of receiving the incident light wave and transmitting said wave to the object; a detector capable of detecting a combination between a light wave reflected by the optical fiber and a light wave returned by the object; and in which the optical fiber has a free end in the shape of a cone, with a vertex angle of between 15 and 25 degrees, the tip of the cone having dimensions of less than 50×50 nm, and the tip of the cone being placed, while in use, at a distance of between 5 and 50 μm from the surface of the object.
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