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Article: Patent No. 7,599,123 Issued on Oct. 6, Assigned to Nikon for Focal Length Varyfication Method (Japanese Inventor)
- Article from:
- US Fed News Service, Including US State News
- Article date:
- October 6, 2009
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ALEXANDRIA, Va., Oct. 6 -- Hiroshi Yamamoto, Kawasaki, Japan, has developed a method for varying focal length. The inventor was issued U.S. Patent No. 7,599,123 on Oct. 6.
The patent has been assigned to Nikon Corp., Tokyo.
According to the abstract released by the U.S. Patent & Trademark Office: "Providing a zoom lens system being inexpensive, compact and lightweight with high optical performance, and an imaging apparatus, and a method for varying a focal length. The zoom lens system includes, in order from an object, a first lens group having negative refractive power, a second lens group having positive refractive power, a third lens group having negative refractive power, and a ...