Optical: systems and elements – Lens – With variable magnification
Patent
1999-02-12
2000-11-28
Epps, Georgia
Optical: systems and elements
Lens
With variable magnification
359687, 359688, 359689, 359690, G02B 1514
Patent
active
061543225
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:
REFERENCES:
patent: 4299452 (1981-11-01), Ikemori
patent: 4370031 (1983-01-01), Ikemori
patent: 4659189 (1987-04-01), Kitagashi
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: 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: 5283693 (1994-02-01), Kohno et al.
patent: 5583699 (1996-12-01), Nakayama
patent: 5739961 (1998-04-01), Nakayama et al.
patent: 5754346 (1998-05-01), Nakayama et al.
patent: 5847882 (1998-12-01), Nakayama
Canon Kabushiki Kaisha
Epps Georgia
Lucas Michael A
LandOfFree
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.
Profile ID: LFUS-PAI-O-1731655