Lens device

Details Lens device Lens device

2008-07-08

2008-07-08

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With support

C359S703000, C359S704000

Reexamination Certificate

active

11881935

ABSTRACT:
A lens device includes a focus lens unit mounted movably to a base, first and second lens units mounted in a main barrel, and a resilient light blocking sheet connected to the focus driving unit. The first and second lens units are movable in the in the main barrel along the axis between an extended position, where the first and second lens units cooperatively define a second gap therebetween, through which light passes and is reflected by the main barrel toward a first gap between the focus lens unit and the focus driving unit, and where the light blocking sheet spans the first gap so as to block passage of the light through the first gap, and a retracted position, where the second lens unit extends into the first gap and causes the light blocking sheet to flex.

REFERENCES:
patent: 6778335 (2004-08-01), Takanashi

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