Zoom lens and image pickup apparatus

Details Zoom lens and image pickup apparatus Zoom lens and image pickup apparatus

2010-01-05

2011-11-08

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Image stabilization

By movable refractive structure

C359S554000, C359S676000

Reexamination Certificate

active

08054549

ABSTRACT:
A zoom lens includes, in order from an object side to an image side, a positive refractive, fixed first lens unit; a negative refractive second lens unit movable mainly for zooming; a positive refractive, fixed third lens unit; a positive refractive fourth lens unit movable for focal-position correction and focusing performed in response to zooming; and a positive refractive fifth lens unit. The fifth lens unit includes, in order from the object side to the image side, a negative refractive, fixed sub-unit; and a positive refractive sub-unit movable substantially perpendicularly to an optical axis. An image formed on an image surface is movable substantially perpendicularly to the optical axis by moving the movable sub-unit substantially perpendicularly to the optical axis. An aperture stop is provided on the object side of the third lens unit. The third lens unit includes a positive refractive sub-unit and a negative refractive sub-unit.

REFERENCES:
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patent: 2008-164725 (2008-07-01), None

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