Zoom lens, optical apparatus and method for forming an image of an object and varying a focal length

Zoom lens, optical apparatus and method for forming an image of an object and varying a focal length

  • CN 101,403,818 A
  • Filed: 09/24/2008
  • Published: 04/08/2009
  • Est. Priority Date: 10/01/2007
  • Status: Active Application
First Claim
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1. zoom lens comprise a plurality of lens combination of arranging along optical axis by from the order of object side,Wherein, in described a plurality of lens combination, the lens combination of the close image rear lens group that has front lens group and on the image-side of described front lens group, arrange with the airspace, andWherein, zooming to from the wide-angle side state when dolly-out,ing dolly-back the end state, the most described lens combination of close image is fixed with respect to image planes.

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