Zoom lens and photographing apparatus having the same

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

2005-08-23

2005-08-23

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S686000, C359S680000

Reexamination Certificate

active

06934092

ABSTRACT:
A zoom lens of the negative lead type includes comprises, in order from an object side, a first lens unit of negative refractive power and a second lens unit of positive refractive power, variation of magnification being effected by varying a separation between the first lens unit and the second lens unit, the zoom lens satisfying the following conditions:in-line-formulae description="In-line Formulae" end="lead"?3≦NL1≦4in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?NL2≦NL1in-line-formulae description="In-line Formulae" end="tail"?where NL1 and NL2 are numbers of lens elements which constitute the first lens unit and the second lens unit, respectively.

REFERENCES:
patent: 4299452 (1981-11-01), Ikemori
patent: 4367927 (1983-01-01), Fujii
patent: 4370031 (1983-01-01), Ikemori
patent: 4659189 (1987-04-01), Kitagishi
patent: 4776679 (1988-10-01), Kitagishi et al.
patent: 4810070 (1989-03-01), Suda et al.
patent: 4842386 (1989-06-01), Kitagishi et al.
patent: 4907866 (1990-03-01), Kitagishi et al.
patent: 4993814 (1991-02-01), Hata
patent: 4999007 (1991-03-01), Aoki et al.
patent: 5011272 (1991-04-01), Nakayama et al.
patent: 5078481 (1992-01-01), Nakayama et al.
patent: 5087988 (1992-02-01), Nakayama
patent: 5111338 (1992-05-01), Nakayama
patent: 5113287 (1992-05-01), Nakayama
patent: 5155629 (1992-10-01), Ito et al.
patent: 5283693 (1994-02-01), Kohno et al.
patent: 5331464 (1994-07-01), Ito et al.
patent: 5583699 (1996-12-01), Nakayama
patent: 5691851 (1997-11-01), Nishio et al.
patent: 5710669 (1998-01-01), Endo
patent: 5724195 (1998-03-01), Enomoto et al.
patent: 5739961 (1998-04-01), Nakayama et al.
patent: 5754346 (1998-05-01), Nakayama et al.
patent: 5847882 (1998-12-01), Nakayama
patent: 5978154 (1999-11-01), Hashimura
patent: 6014268 (2000-01-01), Yahagi
patent: 6081389 (2000-06-01), Takayama et al.
patent: 6104548 (2000-08-01), Nakayama et al.
patent: 6154322 (2000-11-01), Nakayama
patent: 6236522 (2001-05-01), Shimizu
patent: 53-132360 (1978-11-01), None
patent: 56-19022 (1981-02-01), None
patent: 60-55311 (1985-03-01), None
patent: 60-46688 (1985-10-01), None
patent: 61-42246 (1986-09-01), None
patent: 2-136812 (1990-05-01), None
patent: 4-46308 (1992-02-01), None
patent: 4-46309 (1992-02-01), None
patent: 4-46310 (1992-02-01), None
patent: 4-56814 (1992-02-01), None
patent: 4-67112 (1992-03-01), None
patent: 4-67113 (1992-03-01), None
patent: 4-114115 (1992-04-01), None
patent: 4-304410 (1992-10-01), None
patent: 5-88084 (1993-04-01), None
patent: 7-333503 (1995-12-01), None
patent: 8-50245 (1996-02-01), None
patent: 8-86964 (1996-04-01), None
patent: 8-101340 (1996-04-01), None
patent: 8-106048 (1996-04-01), None
patent: 9-33810 (1997-02-01), None
patent: 9-311273 (1997-12-01), None
patent: 10-3037 (1998-01-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3502038