Lens barrel having reference shafts movably supporting lenses

Details Lens barrel having reference shafts movably supporting lenses Lens barrel having reference shafts movably supporting lenses

1991-10-16

1993-12-21

Ben, Loha

Optical: systems and elements

Lens

With variable magnification

359698, 359824, G02B 1514

Patent

active

052725677

ABSTRACT:
A camera lens barrel having a housing which includes front and rear housing members. The lens barrel also includes driving power sources mounted within the lens barrel housing, and reference shafts which are supported in the lens barrel housing and extend parallel to an optical axis of the lens barrel. Further, a plurality of lens groups which include one group for zooming and another group for focusing, are mounted within the lens barrel housing. The lens groups for zooming and focusing are retained by separate lens holders which are mounted to the reference shafts so as to be reciprocally movable along the reference shafts upon activation of the driving power sources.

REFERENCES:
patent: 4534624 (1985-08-01), Toda et al.
patent: 4583827 (1986-04-01), Tokunaga et al.
patent: 4596449 (1986-06-01), Iwata et al.
patent: 4865433 (1989-09-01), Okajima et al.
patent: 4976523 (1990-12-01), Ishikawa

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