Rear-focus optical system, imaging apparatus and method for...

Details Rear-focus optical system, imaging apparatus and method for... Rear-focus optical system, imaging apparatus and method for...

2011-03-08

2011-03-08

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S793000

Reexamination Certificate

active

07903348

ABSTRACT:
Providing a compact rear-focus optical system having excellent optical performance, an imaging apparatus, and a method for focusing the rear-focus optical system. The system includes, in order from an object, a first lens group G1having positive refractive power, an aperture stop S, and a second lens group G2. At least a portion of the second lens group G2is movable along an optical axis of the rear-focus optical system upon focusing. Given conditional expressions are satisfied.

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