Variable magnification optical system and image-taking...

Details Variable magnification optical system and image-taking... Variable magnification optical system and image-taking...

2008-05-27

2008-05-27

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S557000, C359S682000

Reexamination Certificate

active

07379250

ABSTRACT:
A variable magnification optical system including at least: a first lens group having a negative optical power, a second lens group having a positive optical power, a third lens group having a negative optical power, and a fourth lens group having a positive optical power moves the second lens group in an—in-surface direction vertical to the optical axis direction in zooming to thereby correct shake resulting from imaging on the image surface.

REFERENCES:
patent: 5999329 (1999-12-01), Ohtake
patent: 11-174329 (1999-07-01), None
patent: 2004-061679 (2004-02-01), None
patent: 2004-061910 (2004-02-01), None
patent: 2004-205796 (2004-07-01), None

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