Compact zoom lens

Details Compact zoom lens Compact zoom lens

2011-03-29

2011-03-29

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S694000

Reexamination Certificate

active

07916400

ABSTRACT:
A zoom lens includes a substrate, an imaging unit, a stationary lens barrel, a cam lens barrel and a guide lens barrel. The substrate defines a plurality of openings thereon. The imaging unit is attached on the substrate. The stationary lens barrel is mounted on the substrate and surrounding the imaging unit. The cam lens barrel is rotatably received in the stationary lens barrel and movable along the optical axis of the zoom lens as the rotation thereof along the inner circumference of the stationary lens barrel. The guide lens barrel is received in the cam lens barrel and movable axially following the motion of the cam lens barrel, and comprises a plurality of key numbers protruding outwards from the outer circumference corresponding to and received in the openings of the substrate when the zoom lens is positioned in the minimum focal length position.

REFERENCES:
patent: 7525581 (2009-04-01), Suh
patent: 2003/0081325 (2003-05-01), Nomura et al.
patent: 2005/0286142 (2005-12-01), Inamoto
patent: 200820488 (2008-01-01), None

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