Lens apparatus and image pickup apparatus

Details Lens apparatus and image pickup apparatus Lens apparatus and image pickup apparatus

2011-03-08

2011-03-08

Ben, Loha (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S694000, C359S701000

Reexamination Certificate

active

07903346

ABSTRACT:
The lens apparatus includes a first barrel member, a second barrel member, a first rolling bearing and a second rolling bearing. The second barrel member includes a cam for moving a lens unit in an optical axis direction, is disposed inside or outside the first barrel member and rotatable around an optical axis with respect to the first barrel member. The first rolling bearing prevents relative displacements of the first and second barrel members in the optical axis direction and in a radial direction. The first rolling bearing is rotatable between the first and second barrel members. The second rolling bearing prevents the relative displacement of the first and second barrel members in the radial direction. The second rolling bearing is rotatable between the first and second barrel members. The first and second rolling bearing are arranged at positions away from each other in the optical axis direction.

REFERENCES:
patent: 4386829 (1983-06-01), Sumi
patent: 7230773 (2007-06-01), Nomura et al.
patent: 7546029 (2009-06-01), Ishizuka et al.
patent: 2006-189617 (2006-07-01), None
patent: 2008-058581 (2008-03-01), None

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