US Patent 7251080 Zoom lens system
Patent 7251080 was granted and assigned to Pentax on July, 2007 by the United States Patent and Trademark Office.
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Patent Inventor Names
Takashi Enomoto0
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Article (+460 characters)
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Patent abstract
A zoom lens system includes a negative first lens group, a diaphragm, and a positive second lens group, in this order from the object. Zooming is performed by moving the negative first lens group and the positive second lens group along an optical axis of the zoom lens system. The negative first lens group includes a negative first lens element, a negative second lens element, and a positive third lens element, in this order from the object.
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US Patent 07251080 Zoom lens system US Patent 7251080 Zoom lens system
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Patent Number
072510800
Patent Number
72510800
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Official Website
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Current Assignee
Patent Jurisdiction
Patent Number
072510800
Date of Patent
July 31, 2007
0Patent Application Number
111879690
Date Filed
July 25, 2005
0Official Website
Patent Primary Examiner
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US Patent 07251080 Zoom lens system
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07251080
Date of patent
July 31, 2007
Patent application number
11187969
Date Filed
July 25, 2005
Patent primary examiner
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