Light beam preparation arrangement
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United States of America Patent
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May 16, 2006
Grant Date -
Feb 26, 2004
app pub date -
Jun 11, 2003
filing date -
Jun 13, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A light beam preparation arrangement includes a light tunnel, a rotatable unit, and a drive unit. In one aspect, a fixation rigidly attaches the light tunnel directly to the drive unit. In another aspect, temperature of the light tunnel in controlled. In another aspect, the rotatable unit is spaced a distance from the light tunnel, and the distance is controlled. In another aspect, alignment between the light tunnel and the rotatable unit is controlled. In another apsect, the light tunnel is hollow and a gas flows though the tunnel.
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