Zoom lens and image pickup apparatus

Details Zoom lens and image pickup apparatus Zoom lens and image pickup apparatus

2007-02-06

2007-02-06

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S683000, C359S684000, C359S685000, C359S686000, C359S714000, C359S740000, C359S763000, C359S695000

Reexamination Certificate

active

11292539

ABSTRACT:
A zoom lens has first to fifth lens groups G1to G5having positive, negative, positive, positive, and negative refractive power, in order from an object side. The first lens groups G1includes a prism L2for bending a light path. Zooming is performed by adjusting a focal length by linear movement of the second lens group G2and fourth lens group G4and compensating an image surface position by nonlinear movement of the fifth lens group G5. Focusing is performed by moving the fifth lens group G5.

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patent: 2004/0051960 (2004-03-01), Mihara
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patent: 2004354869 (2004-12-01), None
patent: 2004354871 (2004-12-01), None

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