Zoom lens and camera

Details Zoom lens and camera Zoom lens and camera

2005-05-03

2005-05-03

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S683000

Reexamination Certificate

active

06888683

ABSTRACT:
The present invention discloses a zoom lens including:a first lens unit having negative optical power, the first lens unit having a negative lens element on a closest side to an object;a second lens unit having positive optical power, the second lens unit having two or more positive lens elements;a third lens unit having positive optical power; anda fourth lens unit having positive optical power, the fourth lens unit consisting of one positive lens component, said units arranged in the order presented from an object side to an image side,wherein at least the second lens unit and the third lens unit are moved toward the object for zooming from a wide angle side to a telephoto side such that a space between the first lens unit and the second lens unit is smaller, a space between the second lens unit and the third lens unit is smaller, and a space between the third lens unit and the fourth lens unit is larger at a telephoto end than at a wide angle end.Thus, a zoom lens having fewer lenses, a compact body, and good optical performance, and a camera using the same can be realized.

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Notice of reasons for rejection of JP2001-147565 dated Oct. 7, 2003 (with English translation).
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Notice of reasons for rejection of JP2001-175882 dated Jul. 18, 2003 (with English translation).
Decision of Rejection of JP2001-175882 dated Oct. 20, 2003 (with English translation).

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