Variable focal length lens system
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United States of America Patent
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Dec 7, 2010
Grant Date -
Feb 11, 2010
app pub date -
Jul 21, 2009
filing date -
Aug 6, 2008
priority date (Note) -
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Abstract
A variable focal length lens system includes: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; a fourth lens group having a negative refracting power; a fifth lens group having a negative refracting power; and a sixth lens group having a positive refracting power; the first to sixth lens groups being disposed in order from an object side.
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