Zoom lens system and image pickup apparatus including the same

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

2007-08-15

2008-12-02

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S689000, C359S738000

Reexamination Certificate

active

07460311

ABSTRACT:
A compact zoom lens system having excellent optical performance. The zoom lens system includes a first lens unit of negative optical power, a second lens unit of positive optical power, a third lens unit of positive optical power, and an F-number defining member. The second lens unit is disposed on the image side of the first lens unit and includes a lens element disposed closest to the object side. The lens element has a rim, a surface on the object side and having a vertex, and an intersection point defined by an intersection between the surface and the rim. The third lens unit is disposed on the image side of the second lens unit. The F-number defining member is disposed along the optical axis between the vertex and the intersection point. Spaces between the first, second and third lens units vary during zooming.

REFERENCES:
patent: 4647160 (1987-03-01), Ikemori
patent: 4810072 (1989-03-01), Takahashi
patent: 4838666 (1989-06-01), Shiraishi
patent: 5270863 (1993-12-01), Uzawa
patent: 5357374 (1994-10-01), Ohno
patent: 6498687 (2002-12-01), Sekita
patent: 6545819 (2003-04-01), Nanba et al.
patent: 6735020 (2004-05-01), Sekita
patent: 6744564 (2004-06-01), Mihara
patent: 6809879 (2004-10-01), Mihara
patent: 7333275 (2008-02-01), Sekita
patent: 2002/0008920 (2002-01-01), Mihara
patent: 2003/0058549 (2003-03-01), Hagimori
patent: 2003/0103157 (2003-06-01), Watanabe
patent: 2004/0080655 (2004-04-01), Watanabe
patent: 2005/0128601 (2005-06-01), Hiroyuki
patent: 2006/0114574 (2006-06-01), Sekita
patent: 59-018917 (1984-01-01), None
patent: 61-267721 (1986-11-01), None
patent: 63-135913 (1988-06-01), None
patent: 03-288113 (1991-12-01), None
patent: 05-323190 (1993-12-01), None
patent: 07-174971 (1995-07-01), None
patent: 07-261083 (1995-10-01), None
patent: 2001-272602 (2001-10-01), None
patent: 2002-48975 (2002-02-01), None
patent: 2002-55278 (2002-02-01), None
patent: 2002-365545 (2002-12-01), None
patent: 2003-5072 (2003-01-01), None
patent: 2003-149555 (2003-05-01), None
patent: 2003-149556 (2003-05-01), None

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