Zoom lens and image pickup apparatus equipped with same

Details Zoom lens and image pickup apparatus equipped with same Zoom lens and image pickup apparatus equipped with same

2011-05-17

2011-05-17

Choi, William C (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

Reexamination Certificate

active

07944622

ABSTRACT:
A zoom lens is composed, in order from the object side thereof, of a front side lens unit having a negative refracting power at the wide angle end and a rear side lens unit having a positive refracting power at the wide angle end. The front side lens unit includes a first lens unit located closest to the object side and having a positive refracting power and a second lens unit located on the image side of the first lens unit and having a negative refracting power. The distance between the first lens unit and the second lens unit is larger at the telephoto end than at the wide angle end. The rear side lens unit includes a third lens unit located closer to the object side at the telephoto end than at the wide angle end and having a positive refracting power, the distance between the third lens unit and the second lens unit being smaller at the telephoto end than at the wide angle end. The third lens unit satisfies the following condition: 0.01<f3/ft<0.16 . . . (1).

REFERENCES:
patent: 6028717 (2000-02-01), Kohno et al.
patent: 6512633 (2003-01-01), Konno et al.
patent: 6606200 (2003-08-01), Nakayama et al.
patent: 7123422 (2006-10-01), Suzuki
patent: 2006/0098301 (2006-05-01), Miyajima
patent: 2006/0291070 (2006-12-01), Terada et al.
patent: 11-006958 (1999-01-01), None
patent: 11-052244 (1999-02-01), None
patent: 2006-171055 (2006-06-01), None
patent: 2007-003554 (2007-01-01), None
patent: 2007-010695 (2007-01-01), None

Affiliated with

Also associated with

Rating

Zoom lens and image pickup apparatus equipped with 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 equipped with 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 equipped with same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2688821