Zoom lens system and image pickup device having zoom lens...

Details Zoom lens system and image pickup device having zoom lens... Zoom lens system and image pickup device having zoom lens...

2006-09-05

2006-09-05

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S680000

Reexamination Certificate

active

07102829

ABSTRACT:
To realize a zoom lens system, including, in order from an object side to an image side: a first lens unit having a negative optical power; a second lens unit having a positive optical power; a third lens unit having a negative optical power; and a fourth lens unit having a positive optical power, in which: during zooming, an interval between the first lens unit and the second lens unit at a telephoto end is smaller than that at a wide angle end, an interval between the second lens unit and the third lens unit at the telephoto end is larger than that at the wide angle end, and an interval between the third lens unit and the fourth lens unit at the telephoto end is smaller than that at the wide angle end; and specific conditions are satified.

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