Compact zoom lens

Details Compact zoom lens Compact zoom lens

2008-04-29

2008-04-29

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S681000, C359S682000, C359S683000, C359S689000, C359S716000, C359S740000, C359S753000, C359S781000, C359S784000

Reexamination Certificate

active

07365912

ABSTRACT:
A compact zoom lens suitable for an imaging optical system using a solid-state image sensing device is provided. The zoom lens includes a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power. The first through third lens groups are sequentially arranged from an object side toward an image side. The first, second, and third lens groups move when magnification changes from the wide-angle position to the telephoto position, and a refractive index G1n of at least one lens element included in the first lens group satisfies 1.90<G1n<2.00.

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patent: 2003-0024550 (2003-03-01), None

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