Zoom lens system and optical apparatus using the same

Details Zoom lens system and optical apparatus using the same Zoom lens system and optical apparatus using the same

2007-11-03

2009-06-02

Choi, William C (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S708000, C359S717000, C359S683000

Reexamination Certificate

active

07542215

ABSTRACT:
A zoom lens system excellently correcting various aberrations with accomplishing compactness, lightweight, and slimness upon accommodating lens barrel. The system consists of, in order from an object, a first group G1having negative power, and a second group G2having positive power. Upon zooming from a wide-angle end to a telephoto end, a distance between the first group G1and the second group G2decreases. The first group G1consists of, in order from the object, a first lens L1with negative power, and a second lens L2with positive power. The second group G2consists of three lenses that are, in order from the object, a third lens L3with positive power, a fourth lens L4with negative power having a convex surface facing the object, a fifth lens L5with positive power. The three lenses are disposed without cemented each other. Given condition is satisfied.

REFERENCES:
patent: 4993814 (1991-02-01), Hata
patent: 6025961 (2000-02-01), Kohno et al.
patent: 6124987 (2000-09-01), Kayanuma et al.
patent: 6275342 (2001-08-01), Sakamoto et al.
patent: 6967783 (2005-11-01), Noda
patent: 7054072 (2006-05-01), Sato
patent: 7177096 (2007-02-01), Enomoto
patent: 7310192 (2007-12-01), Nagai et al.
patent: 2006/0103946 (2006-05-01), Nagai et al.
patent: 4-46308 (1992-02-01), None
patent: 4-46310 (1992-02-01), None
patent: 4-56814 (1992-02-01), None
patent: 08-122638 (1996-05-01), None
patent: 09-033809 (1997-02-01), None
patent: 10-274739 (1998-10-01), None
patent: 2000-9997 (2000-01-01), None
patent: 2001-215407 (2001-08-01), None
patent: 2003-131128 (2003-05-01), None
patent: 2005-300858 (2005-10-01), None
patent: 2005-316181 (2005-11-01), None
patent: 2006/023679 (2006-01-01), None
patent: 2006-091082 (2006-04-01), None
patent: 2006-145762 (2006-06-01), None
patent: 2006-171429 (2006-06-01), None

Affiliated with

Also associated with

Rating

Zoom lens system and optical apparatus using 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 system and optical apparatus using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens system and optical apparatus using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4100965