Image-taking lens apparatus

Details Image-taking lens apparatus Image-taking lens apparatus

2006-05-23

2006-05-23

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S683000

Reexamination Certificate

active

07050241

ABSTRACT:
A zoom lens system for forming an optical image of a subject on the light-receiving surface of an image sensor that converts the optical image into an electrical signal is provided with, from the object side thereof, at least a first lens unit, a second lens unit, and a third lens unit, and achieves zooming by varying the distances between the lens units. The first lens unit has a negative optical power. The second lens unit has a positive optical power. A prescribed condition is fulfilled.

REFERENCES:
patent: 5289317 (1994-02-01), Ikemori et al.
patent: 6078434 (2000-06-01), Ori
patent: 2003/0160902 (2003-08-01), Mihara et al.
patent: 2003-057547 (2003-02-01), None
patent: 2003-131129 (2003-05-01), None

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