Zoom lens

Details Zoom lens Zoom lens

2008-05-20

2008-05-20

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S676000

Reexamination Certificate

active

11723910

ABSTRACT:
A zoom lens is provided and includes a first lens group, a second lens group, an aperture diaphragm, a third lens group, and a fourth lens group in order from the object side. The first lens group and the third lens group are fixed groups, and the second lens group and the fourth lens group are moving groups. The zoom lens has a right-angle prism in the first lens group and satisfies the specific conditions.

REFERENCES:
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patent: 7286299 (2007-10-01), Matsui
patent: 7315423 (2008-01-01), Sato
patent: 2004/0095503 (2004-05-01), Iwasawa et al.
patent: 8-248318 (1996-09-01), None
patent: 10-293253 (1998-11-01), None
patent: 2000-131610 (2000-05-01), None
patent: 2003-202500 (2003-07-01), None

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