Zoom lens and image pickup apparatus having the same

Details Zoom lens and image pickup apparatus having the same Zoom lens and image pickup apparatus having the same

2011-07-19

2011-07-19

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S676000, C359S726000, C359S737000, C396S072000, C348S240990, C348S335000

Reexamination Certificate

active

07982970

ABSTRACT:
A zoom lens includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a reflection member configured to bend an optical path, a third lens unit having a positive refractive power, and a fourth lens unit having a positive refractive power. In the zoom lens, two or more lens units of the first through the third lens unit move during zooming. In addition, in the zoom lens, the third lens unit includes a first lens sub-unit, and a second lens sub-unit configured to move in a direction having a component perpendicular to the optical axis to displace an image forming position.

REFERENCES:
patent: 7023624 (2006-04-01), Nanba
patent: 2005/0046962 (2005-03-01), Nanba
patent: 2007/0014031 (2007-01-01), Kohno et al.
patent: 2009/0040624 (2009-02-01), Shinohara
patent: 2007-292795 (2007-11-01), None
patent: 2007-293051 (2007-11-01), None

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