Optics: measuring and testing – By light interference – Holography
Reexamination Certificate
2005-02-15
2005-02-15
Turner, Samuel A. (Department: 2877)
Optics: measuring and testing
By light interference
Holography
Reexamination Certificate
active
06856399
ABSTRACT:
In one embodiment, an apparatus for measuring pressure is provided including a holographic element containing at least one volume hologram; a reference member; a sensing member coupled to the pressure being measured, and at least one light source; wherein the device operates by passing a reference light beam between the reference member and the holographic element, the reference beam having a constant optical path, and passing a sensing light beam between the sensing member and the holographic element, the sensing beam having optical path that varies as a function of the pressure; the volume hologram converting the reference beam and the sensing beam into an information light beam the intensity of which is a measure of the pressure. Preferably, the reference member and the sensing member are made from the same material.
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Kuskovsky Igor
Kuskovsky Mark L.
Lerner David Littenberg Krumholz & Mentlik LLP
Lyons Michael A.
Modern Optical Technologies L.L.C.
Turner Samuel A.
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