Zoom lens and an imaging apparatus

Details Zoom lens and an imaging apparatus Zoom lens and an imaging apparatus

2006-05-23

2006-05-23

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S676000

Reexamination Certificate

active

07050242

ABSTRACT:
A zoom lens is disclosed to comprise sequentially from an object side, a first lens group having an negative refracting power, and being movable back and forth along with an optical axis when a zooming rate is changed, a second lens group having a positive refracting power, and being movable to the object side along with the optical axis when the zooming rate is changed from a wide-end to a tele-end; and a third lens group movable back and forth along with the optical axis, and having a positive refracting power. In such zoom lens, the second lens group includes sequentially from the object side, an iris, one piece of convergent lens where at least a surface facing to the object side is an aspherical surface and an adhered three pieces of lenses.

REFERENCES:
patent: 5969878 (1999-10-01), Koizumi
patent: 6804064 (2004-10-01), Hirakawa
patent: 2001/0013979 (2001-08-01), Koreeda

Affiliated with

Also associated with

Rating

Zoom lens and an imaging apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zoom lens and an imaging apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens and an imaging apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3560437