Fisheye lens system and a fisheye zoom lens system

Details Fisheye lens system and a fisheye zoom lens system Fisheye lens system and a fisheye zoom lens system

2008-01-08

2008-01-08

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S680000, C359S750000, C359S751000

Reexamination Certificate

active

07317581

ABSTRACT:
A fisheye lens system includes a negative first lens group and a positive second lens group, which are defined with respect to a maximum air-distance between lens elements constituting the fisheye lens system. The negative first lens group includes a first negative meniscus lens element having the convex surface facing toward the object, a second negative meniscus lens element having the convex surface facing toward the object, and a negative third lens element.

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patent: 2006/0001985 (2006-01-01), Tada et al.
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patent: 8-171053 (1996-07-01), None
English Language Abstract of JP 8-171053.

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