Optical unit and its use
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United States of America Patent
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Sep 21, 2004
Issued Date -
N/A
app pub date -
Sep 23, 2002
filing date -
Dec 9, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical unit (10) comprising a plurality of optical elements, a receiving structure (12) with a plurality of element supports (40, 41) for receiving the optical elements. The element supports (40, 41) are in the form of a plate or shell or tube, whose dimensions are greater than the dimensions of the optical elements to be received, and is connected to another element support. At least one element support (40, 41) comprises temperature elements (43-49) that can be heated and/or cooled. The optical unit (10) furthermore comprises a control unit for driving the temperature elements (43-49) in order to locally change the temperature of the at least one element support (40, 41) so as to influence in a controlled manner the shape of the at least one element support (40, 41).
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