Lens barrel assembly having outer and inner barrels

Details Lens barrel assembly having outer and inner barrels Lens barrel assembly having outer and inner barrels

2006-11-28

2006-11-28

Hasan, Mohammad A (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

Reexamination Certificate

active

07142373

ABSTRACT:
A lens barrel assembly for use with a digital still camera includes an outer barrel having a front end and a rear end. An inner barrel is inserted in the outer barrel in an optical axis direction. The outer barrel moves forwards relative to the inner barrel, to shift between a short size position and a long size position, and when in the short size position, shifts from the inner barrel at a smallest shifting amount, and when in the long size position, shifts from the inner barrel at a largest shifting amount. A vent is formed in the outer barrel, and disposed close to the front end. A filter is water-impermeable and air-permeable, and secured to the vent in a closed manner. Also, a vent cover is secured to the outer barrel, for covering the vent.

REFERENCES:
patent: 6115189 (2000-09-01), Nomura et al.
patent: 7012760 (2006-03-01), Matsushima et al.
patent: 3-62330 (1991-06-01), None
patent: 9-197527 (1997-07-01), None
patent: 11-327018 (1999-11-01), None

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