ZOOM LENS AND ELECTRONIC IMAGING APPARATUS INCLUDING THE SAME

PROBLEM TO BE SOLVED: To provide a small sized zoom lens having good focusing effect and good optical performance and to provide an electronic imaging apparatus including the lens.SOLUTION: The zoom lens is characterized by being composed of: a first lens group having positive refractive power; a se...

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Bibliographic Details
Main Authors ICHIKAWA KEISUKE, KON TOYONORI
Format Patent
LanguageEnglish
Published 12.04.2012
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide a small sized zoom lens having good focusing effect and good optical performance and to provide an electronic imaging apparatus including the lens.SOLUTION: The zoom lens is characterized by being composed of: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; a fourth lens group having positive refractive power; a fifth lens group having negative refractive power; and a sixth lens group having positive refractive power, in this order from the object side. In addition, the first lens group includes refractive optical elements and the lens component most on an image side in the fourth lens group has negative refractive power.
Bibliography:Application Number: JP20100216388