Zoom lens system and camera including the same

Details Zoom lens system and camera including the same Zoom lens system and camera including the same

2011-04-19

2011-04-19

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

Reexamination Certificate

active

07929222

ABSTRACT:
A zoom lens system includes four lens units each having positive, negative, negative and positive refractive powers in the stated order from an object side to an image side. A first lens unit includes a variable apex angle prism on the image side of at least one lens element. In this zoom lens system, a focal length of the first lens unit and imaging magnifications of a second lens unit and a fourth lens unit are set appropriately so as to suppress occurrence of decentering aberration accompanying a variation of a prism apex angle.

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