Zoom lens barrel

Details Zoom lens barrel Zoom lens barrel

2006-10-31

2006-10-31

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S702000

Reexamination Certificate

active

07130132

ABSTRACT:
Provided is a zoom lens barrel including a plurality of lens groups, each having at least one lens arranged in an optical axis direction, an actuating mechanism capable of moving the lens groups in an optical axis direction, and a shutter unit including an opening portion for exposure, a blade capable of adjusting the degree of opening of the opening portion, and an electronic actuating apparatus capable of actuating the blade to adjust the degree of opening of the opening portion according to the distance between the shutter unit and one of the lens groups adjacent to the shutter unit when the distance is shorter than a predetermined distance.

REFERENCES:
patent: 5742850 (1998-04-01), Nomura et al.
patent: 5971630 (1999-10-01), Nomura et al.
patent: 6046864 (2000-04-01), Onda
patent: 07-295050 (1995-11-01), None
patent: 10-111444 (1998-04-01), None
patent: 2001-251454 (2001-09-01), None
patent: 2003-121720 (2003-04-01), None

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