G - Physics – 01 – J
Patent
G - Physics
01
J
G01J 9/02 (2006.01) G01B 9/02 (2006.01) G01B 11/24 (2006.01)
Patent
CA 2080023
2080023 9116597 PCTABS00008 Apparatus and method for measuring a change in an energy path length are disclosed. One broad embodiment disclosed is an apparatus for measuring a change in an energy path length comprising an energy source (301) having means (302, 307) for emanating a first energy beam, substantially uncollimated, wherein at least a portion of the first energy beam is substantially coherent and having means (327) for coherently guiding a second energy beam to an energy interferometer, a coherent energy director (310), an energy collector (317), wherein the energy director (310) is operatively associated with the means for emanating and the collector (317) thereby coherently directing at least a portion of the first energy beam from the means (302, 307) for emanating to the collector (317), wherein the collector (317) is operatively associated with the interferometer thereby coherently directing at least a portion of the collected first energy beam to the interferometer whereby the collected first energy beam interferes with the second energy beam thereby producing an output signal, means (333) for changing the energy path length of the first energy beam between the means (302, 307) for emanating and the director (310), the means (333) for changing being operatively associated with the first energy beam emanator, and a calculator (319) operatively associated with the interferometer to determine the change in the energy path length from a change in the output signal.
Dabbs Timothy Peter
Glass Monty
Commonwealth Scientific And Industrial Research Organisation
Gowling Lafleur Henderson Llp
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