Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masakazu Saori0
Date of Patent
December 11, 2007
0Patent Application Number
112239150
Date Filed
September 13, 2005
0Patent Primary Examiner
Patent abstract
A zoom lens system includes a negative first lens group, a positive second lens group, a diaphragm, a negative third lens group, and a positive fourth lens group, in this order from the object. The negative third lens group includes cemented lens elements having a positive lens element and a negative lens element. The positive fourth lens group includes a positive single lens element, and cemented lens elements having a positive lens element and a negative lens element, in this order from the object.
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