Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2007-08-10
2009-02-17
Lester, Evelyn A. (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S684000, C359S685000, C359S686000, C359S687000, C359S714000, C359S740000, C359S763000, C359S764000, C396S072000, C396S079000, C348S240300
Reexamination Certificate
active
07492525
ABSTRACT:
A zoom lens having five lens groups arranged in succession. The zoom lens is configured such that when zooming from a short focal length end toward a long focal length end, the second lens group lens moves toward the third lens group and the fourth lens group moves toward a side of the third lens group, and the fifth lens group corrects the zooming and a shift in a position of an imaging plane of the zoom lens caused by movement of the third lens group and the fourth lens group.
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Lester Evelyn A.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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