Lens system and camera
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United States of America Patent
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Jan 10, 2006
Grant Date -
Feb 17, 2005
app pub date -
Jul 29, 2004
filing date -
Jul 31, 2003
priority date (Note) -
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Abstract
A lens system comprising a first lens group with a negative refractive power, a second lens group with a positive refractive power, and a third lens group with a positive refractive power arranged in this order from an object side, wherein a focal length f2 of the second lens group, a focal length f3 of the third lens group and a radius of curvature Rm of an object side-surface of a lens that is closest to the object side in the second lens group satisfy following conditions
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