Zoom lens mechanism partly foldable and retractable

Details Zoom lens mechanism partly foldable and retractable Zoom lens mechanism partly foldable and retractable

2006-03-07

2006-03-07

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S676000, C359S683000, C359S695000, C359S696000, C359S704000, C359S823000, C359S826000, C396S055000, C396S072000, C396S529000

Reexamination Certificate

active

07009781

ABSTRACT:
A zoom lens mechanism foldable and retractable to be used in a digital still camera to control zooming of the zoom lens uses programmed data written in a micro controller unit (hereinafter referred to as MCU) instead of the conventional cylindrical grooved cams that are usually used to mechanically control zooming of a zoom lens of a digital still camera, and the assembly of the second lens group is rotatable inside the lens barrel, and the first lens group can be folded and retracted into the space provided by the rotation of the second lens assembly.

REFERENCES:
patent: 5602675 (1997-02-01), Okada
patent: 5698841 (1997-12-01), Momoki
patent: 5907724 (1999-05-01), Uno et al.
patent: 6064533 (2000-05-01), Kenin et al.
patent: 6453123 (2002-09-01), Oshima
patent: 6762888 (2004-07-01), Oshima
patent: 2004/0061949 (2004-04-01), Yakita et al.
patent: 2005/0007679 (2005-01-01), Makii et al.

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