Zoom lens device

Details Zoom lens device Zoom lens device

2007-12-04

2007-12-04

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S686000, C359S682000

Reexamination Certificate

active

10649537

ABSTRACT:
A zoom lens device has a zoom lens system having a plurality of lens units; and an image sensor converting an optical image formed by the zoom lens system, into electric image data. Lens surfaces constituting the zoom lens system are all refracting surfaces. Zooming is performed by varying the distances between the lens units. The following conditions are satisfied:in-line-formulae description="In-line Formulae" end="lead"?3.1≦ft/fw≦5.5in-line-formulae description="In-line Formulae" end="tail"?where fw is the focal length of the zoom lens system in the shortest focal length condition, and ft is the focal length of the zoom lens system in the longest focal length condition.

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