Zoom lens

Details Zoom lens Zoom lens

1998-01-16

2000-05-09

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

359683, G02B 1514

Patent

active

060611863

ABSTRACT:
A zoom lens includes, in order from an object side to an image side, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of positive refractive power and a fifth lens unit of negative refractive power, wherein, during zooming from a wide-angle end to a telephoto end, at least the first, third, fourth and fifth lens units are axially moved toward the object side in such a manner that a separation between the first lens unit and the second lens unit increases and a separation between the second lens unit and the third lens unit decreases, and wherein the fifth lens unit is axially moved toward the image side to effect focusing on from an infinitely distant object to a closest object.

REFERENCES:
patent: 5056900 (1991-10-01), Mukaiya et al.
patent: 5185678 (1993-02-01), Arimoto
patent: 5221994 (1993-06-01), Nishio
patent: 5638216 (1997-06-01), Horiuchi et al.
patent: 5666229 (1997-09-01), Ohtake
patent: 5668667 (1997-09-01), Ohtake
patent: 5691851 (1997-11-01), Nishio et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1070913