Zoom lens and image pick up apparatus including the same

Details Zoom lens and image pick up apparatus including the same Zoom lens and image pick up apparatus including the same

2007-03-06

2007-03-06

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S557000, C359S676000, C359S684000, C359S685000, C359S686000, C359S713000, C359S714000, C359S763000, C359S766000

Reexamination Certificate

active

11444830

ABSTRACT:
A zoom lens includes, in order from an object side to an image side: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power and an aperture stop; a fourth lens unit having negative optical power; and a fifth lens unit having positive optical power, in which, during zooming from a wide-angle end to a telephoto end, the first lens unit stays, the second lens unit moves toward the image side, and the third lens unit moves together with the aperture stop.

REFERENCES:
patent: 5847882 (1998-12-01), Nakayama
patent: 6094312 (2000-07-01), Nakayama
patent: 6985303 (2006-01-01), Takatsuki
patent: 39-29046 (1964-12-01), None
patent: 6-148523 (1994-05-01), None
patent: 8-5913 (1996-01-01), None
patent: 8-5913 (1996-01-01), None
patent: 8-146295 (1996-06-01), None

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