Apparatus for varying the path length of a beam of radiation

Details Apparatus for varying the path length of a beam of radiation Apparatus for varying the path length of a beam of radiation

2003-09-18

2010-06-22

Connolly, Patrick J (Department: 2877)

Optics: measuring and testing

By light interference

Spectroscopy

C359S213100

Reexamination Certificate

active

07742172

ABSTRACT:
An apparatus for varying the path length of a beam of radiation, the apparatus comprising: an element (51) rotatably mounted about an axis, said element comprising two reflective surfaces in fixed relation to one another such that radiation may be reflected between said reflective surfaces and out of the element (51); and driving means (55) for rotatably oscillating said element about said axis.

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