Objective lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 4, 2008
Grant Date -
Oct 11, 2007
app pub date -
Mar 6, 2007
filing date -
Sep 7, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
An objective lens comprises a housing, an iris diaphragm and a plurality of lens groups. For focusing the objective lens while minimizing the variation of the image angle at least two lens groups are adapted to be moved relative to the housing. The one lens group is arranged in front of the iris diaphragm. The other lens group is arranged at least partially behind the iris diaphragm.
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