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US 7,742,172 B2Granted
Apparatus for varying the path length of a beam of radiation
AssigneeTeraView Limited
InventorsJulian A. Cluff, Michael J. Withers, Ian V. Bradley
Life of this patent
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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.
Claims15
An apparatus for varying the path length of a beam of radiation, the apparatus comprising:
- an element rotatably mounted about an axis, said element comprising two reflective surfaces in fixed relation to one another such that radiation is reflected between said reflective surfaces and out of the element;
- and
- driving means for rotatably oscillating said element back and forth about said axis, wherein said driving means comprises a galvanometer.
A method for varying the path length of a beam of radiation, the method comprising:
- providing an element comprising two reflective surfaces in fixed relation to one another such that radiation is reflected between said reflective surfaces and out of the element;
- rotatably mounting said element about an axis;
- and
- rotatably oscillating said element back and forth about said axis using a galvanometer.
1 more element
Dependencies are inferred from the claim text.