Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2007-10-30
2007-10-30
Mack, Ricky (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S683000
Reexamination Certificate
active
11293751
ABSTRACT:
At least one exemplary embodiment is directed to a zoom lens system including, in order from an object side to an image side: a first lens unit having a negative optical power; a second lens unit having a positive optical power; and a third lens unit having a positive optical power. In this particular exemplary embodiment, the zoom lens system changes an interval between the first and second lens units, and an interval between the second and third lens units during zooming.
REFERENCES:
patent: 4647160 (1987-03-01), Ikemori
patent: 4810072 (1989-03-01), Takahashi
patent: 4828372 (1989-05-01), Betensky
patent: 4838666 (1989-06-01), Shiraishi
patent: 5270863 (1993-12-01), Uzawa
patent: 5872660 (1999-02-01), Kohno
patent: 6038084 (2000-03-01), Okada
patent: 6124984 (2000-09-01), Shibayama
patent: 6304389 (2001-10-01), Shibayama
patent: 6498688 (2002-12-01), Shibayama
patent: 6618210 (2003-09-01), Noguchi
patent: 6671103 (2003-12-01), Itoh
patent: 6856467 (2005-02-01), Iyama
patent: 7042652 (2006-05-01), Nose et al.
patent: 2002/0149857 (2002-10-01), Nobe
patent: 2002/0154908 (2002-10-01), Itoh
patent: 2003/0103157 (2003-06-01), Watanabe
patent: 2005/0068634 (2005-03-01), Miyatake et al.
patent: 59-018917 (1984-01-01), None
patent: 61-267721 (1986-11-01), None
patent: 63-135913 (1988-06-01), None
patent: 3-288113 (1991-12-01), None
patent: 4-217219 (1992-08-01), None
patent: 06-094996 (1994-04-01), None
patent: 7-261083 (1995-10-01), None
patent: 9-258103 (1997-10-01), None
patent: 10-039214 (1998-02-01), None
patent: 10-213745 (1998-08-01), None
patent: 11-52246 (1999-02-01), None
patent: 2895843 (1999-03-01), None
patent: 11-119101 (1999-04-01), None
patent: 11-174322 (1999-07-01), None
patent: 11-194274 (1999-07-01), None
patent: 2001-42218 (2001-02-01), None
patent: 2002-23053 (2002-01-01), None
patent: 2002-196238 (2002-07-01), None
patent: 2002-196240 (2002-07-01), None
patent: 2002-267930 (2002-09-01), None
patent: 2002-365545 (2002-12-01), None
patent: 2003-156686 (2003-05-01), None
patent: 2002-023053 (2007-02-01), None
Canon Kabushiki Kaisha
Canon U.S.A. Inc IP Division
Choi William C
Mack Ricky
LandOfFree
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