Zoom lens barrel

Details Zoom lens barrel Zoom lens barrel

2006-03-28

2006-03-28

Mack, Ricky L. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S703000, C359S704000

Reexamination Certificate

active

07019913

ABSTRACT:
A zoom lens barrel includes a first stationary cylinder defining an optical axis. The first stationary cylinder has a tubular wall surrounding a passage. A guiding and positioning slot is defined in the tubular wall along the optical axis with a plurality of anchor points and block points alternately arranged on edges thereof. A first lens carrier is held in the passage and has a driving pole. A second lens carrier surrounds the tubular wall and has a retainer and a first guiding slot. A second stationary cylinder surrounds the second lens carrier and has a stopper and a second guiding slot. The driving pole passes through the guiding and positioning slot, the first and the second guiding slot and is positioned in one of the anchor points. The spring is retained between the first stationary cylinder and the second lens carrier to push the second lens carrier moving with the first lens carrier till the retainer is blocked by the stopper.

REFERENCES:
patent: 5739963 (1998-04-01), Kato
patent: 5900995 (1999-05-01), Akada et al.
patent: 2005/0094992 (2005-05-01), Hamasaki et al.
patent: 2005/0115358 (2005-06-01), Hamasaki et al.

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