Zoom lens and camera

Details Zoom lens and camera Zoom lens and camera

2007-09-25

2007-09-25

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S715000, C359S774000

Reexamination Certificate

active

11432059

ABSTRACT:
To obtain a high imaging performance even for a relatively long focal length in a zoom lens provided with an optical-path bending member for bending an optical path. The following are included: a first group of lenses G1having a positive refracting power, a second group of lenses G2having a negative refracting power, a third group of lenses G3having a positive refracting power, and a fourth group of lenses G4having a positive refracting power arranged in that order from the object side to the image surface side. Zooming is performed by moving the second group of lenses G2and fourth group of lenses G4along an optical axis. The first group of lenses G1is constituted of a group of positive lenses L1having a positive refracting power and an optical-path bending member L2for bending an optical path arranged in that order from the object side to the image face side.

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