Super wide-angle lens system and image-capturing device...

Details Super wide-angle lens system and image-capturing device... Super wide-angle lens system and image-capturing device...

2007-07-03

2007-07-03

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

Reverse telephoto

C359S740000

Reexamination Certificate

active

11092919

ABSTRACT:
In order to provide a fast super wide-angle lens system having the f-number of f/2.8 and a wide angle of view of 2ω=100° or more in an imaging area of a digital camera and an image-capturing device equipped with the super wide-angle lens system. The lens system includes, in order from an object, a first lens group G1having negative refractive power, an aperture stop S, and a second lens group G2having positive refractive power, and the lens system satisfies predetermined conditional expressions.

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