Zoom lens and image pickup apparatus

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

2007-07-10

2007-07-10

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S684000, C359S733000

Reexamination Certificate

active

11223025

ABSTRACT:
A zoom lens includes: a first lens group having a positive refractive power and statically positioned along an optical axis when a power of the zoom lens is varied or the zoom lens is focused; a second lens group having a negative refractive power; a third lens group having a positive refractive power; a fourth lens group having a positive refractive power; a fifth lens group. The second and fourth lens groups are moved for varying the power of the zoom lens and the fourth lens group is further moved for focusing the zoom lens. The first lens group includes a reflective optical element for bending an optical path. The second lens group includes a cemented lens including a positive lens and a negative lens. The fourth lens group includes two positive lenses, and the fifth lens group includes one positive lens having at least one aspherical surface.

REFERENCES:
patent: 3658411 (1972-04-01), Price
patent: 7068440 (2006-06-01), Nakatani et al.
patent: 2003/0161620 (2003-08-01), Hagimori et al.
patent: 2004/0095503 (2004-05-01), Iwasawa et al.
patent: 1 630 584 (2006-03-01), None
patent: 1 632 802 (2006-03-01), None
patent: 2005-195757 (2005-07-01), None
European Search Report, EP 05 25 5517, Mar. 20, 2006.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3770116