Zoom lens and optical apparatus having the same

Details Zoom lens and optical apparatus having the same Zoom lens and optical apparatus having the same

2005-03-01

2005-03-01

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S680000

Reexamination Certificate

active

06862143

ABSTRACT:
A zoom lens is constructed with, in order from an object side to an image side, a first lens unit of negative optical power, the first lens unit including a negative meniscus lens having a concave surface facing the image side and a positive meniscus lens having a convex surface facing the object side, a second lens unit of positive optical power, the second lens unit including a cemented lens of positive optical power as a whole disposed on the most image side of the second lens unit, and a lens having a concave surface facing the image side and adjoining a surface on the object side of the cemented lens, and a third lens unit of positive optical power, wherein a separation between the first lens unit and the second lens unit and a separation between the second lens unit and the third lens unit are varied to effect variation of magnification.

REFERENCES:
patent: 4465343 (1984-08-01), Horimoto
patent: 4647160 (1987-03-01), Ikemori
patent: 4810072 (1989-03-01), Takahashi
patent: 4828372 (1989-05-01), Betensky et al.
patent: 4832471 (1989-05-01), Hamano
patent: 4838666 (1989-06-01), Shiraishi
patent: 4934796 (1990-06-01), Sugiura et al.
patent: 4988174 (1991-01-01), Horiuchi et al.
patent: 4991942 (1991-02-01), Fujibayashi et al.
patent: 4998809 (1991-03-01), Tsuji et al.
patent: 4999007 (1991-03-01), Aoki et al.
patent: 5009491 (1991-04-01), Hata
patent: 5009492 (1991-04-01), Hamano
patent: 5050972 (1991-09-01), Mukaiya et al.
patent: 5103343 (1992-04-01), Sekita
patent: 5132848 (1992-07-01), Nishio et al.
patent: 5134524 (1992-07-01), Hamano et al.
patent: 5138492 (1992-08-01), Hamano et al.
patent: 5182673 (1993-01-01), Kikuchi et al.
patent: 5253113 (1993-10-01), Sekita et al.
patent: 5262897 (1993-11-01), Kawamura
patent: 5270863 (1993-12-01), Uzawa
patent: 5299064 (1994-03-01), Hamano et al.
patent: 5430576 (1995-07-01), Hamano
patent: 5434710 (1995-07-01), Zozawa
patent: 5521758 (1996-05-01), Hamano
patent: 5546230 (1996-08-01), Sato et al.
patent: 5568321 (1996-10-01), Ogawa et al.
patent: 5574599 (1996-11-01), Hoshi et al.
patent: 5600490 (1997-02-01), Sugawara et al.
patent: 5610766 (1997-03-01), Aoki et al.
patent: 5638216 (1997-06-01), Horiuchi et al.
patent: 5677792 (1997-10-01), Hamano
patent: 5682269 (1997-10-01), Kimura et al.
patent: 5751496 (1998-05-01), Hamano
patent: 5771123 (1998-06-01), Hamano
patent: 5774275 (1998-06-01), Hamano
patent: 5815320 (1998-09-01), Hoshi et al.
patent: 5818646 (1998-10-01), Hamano
patent: 5831772 (1998-11-01), Nishio et al.
patent: 5847875 (1998-12-01), Kodama et al.
patent: 5905530 (1999-05-01), Yokota et al.
patent: 5909318 (1999-06-01), Tanaka
patent: 5917662 (1999-06-01), Sekita
patent: 5933283 (1999-08-01), Hamano
patent: 5963378 (1999-10-01), Tochigi et al.
patent: 5973858 (1999-10-01), Sekita
patent: 5991091 (1999-11-01), Hayakawa
patent: 5995287 (1999-11-01), Sekita
patent: 5999311 (1999-12-01), Nanba et al.
patent: 6021004 (2000-02-01), Sekita et al.
patent: 6038084 (2000-03-01), Okada et al.
patent: 6052225 (2000-04-01), Hoshi
patent: 6081389 (2000-06-01), Takayama et al.
patent: 6104547 (2000-08-01), Nanba
patent: 6124986 (2000-09-01), Sekita et al.
patent: 6163400 (2000-12-01), Nanba
patent: 6185048 (2001-02-01), Ishii et al.
patent: 6229655 (2001-05-01), Kohno et al.
patent: 6308011 (2001-10-01), Wachi et al.
patent: 6349002 (2002-02-01), Shibayama et al.
patent: 6452729 (2002-09-01), Yamamoto
patent: 6473231 (2002-10-01), Hamano et al.
patent: 6498687 (2002-12-01), Sekita et al.
patent: 6522475 (2003-02-01), Akiyama et al.
patent: 20010013980 (2001-08-01), Kohno et al.
patent: 0 913 718 (1999-05-01), None
patent: 48-20536 (1973-03-01), None
patent: 57-26816 (1982-02-01), None
patent: 63-135913 (1988-06-01), None
patent: 3-240011 (1991-10-01), None
patent: 3-288113 (1991-12-01), None
patent: 4-218013 (1992-08-01), None
patent: 5-173073 (1993-07-01), None
patent: 6-40170 (1994-05-01), None
patent: 7-3507 (1995-01-01), None
patent: 7-261083 (1995-10-01), None
patent: 10-213745 (1998-08-01), None
patent: 10-293253 (1998-11-01), None
patent: 10-307258 (1998-11-01), None
patent: 11-52237 (1999-02-01), None
patent: 11-52245 (1999-02-01), None
patent: 11-84243 (1999-03-01), None
patent: 11-95104 (1999-04-01), None
patent: 11-119101 (1999-04-01), None
patent: 11-149044 (1999-06-01), None
patent: 11-194274 (1999-07-01), None
patent: 11-287953 (1999-10-01), None
patent: 2000-267009 (2000-09-01), None
patent: 2001-343587 (2001-12-01), None

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