Zoom lens and image pickup apparatus including the same

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

2011-06-14

2011-06-14

Choi, William C (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

Reexamination Certificate

active

07961403

ABSTRACT:
A zoom lens includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a rear group including at least one lens unit. The first lens unit, the second lens unit, the third lens unit, and the rear group are arranged in order from an object side to an image side. The second and third lens units move for zooming. Imaging magnifications of the second lens unit at a wide angle end and a telephoto end, imaging magnifications of the third lens unit at the wide angle end and the telephoto end, a moving amount of the third lens unit along an optical axis during zooming from the wide angle end to the telephoto end, and a total lens length at the telephoto end are set based on predetermined conditions.

REFERENCES:
patent: 6594087 (2003-07-01), Uzawa et al.
patent: 6975461 (2005-12-01), Eguchi
patent: 7206137 (2007-04-01), Nakatani et al.
patent: 7830612 (2010-11-01), Hagiwara

Affiliated with

Also associated with

Rating

Zoom lens and image pickup apparatus including the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zoom lens and image pickup apparatus including the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens and image pickup apparatus including the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2631042