Zoom lens having the vibration-reduction function

Details Zoom lens having the vibration-reduction function Zoom lens having the vibration-reduction function

1996-02-05

1998-06-02

Phan, James

Optical: systems and elements

Image stabilization

By movable refractive structure

359554, 359676, 359677, 359683, 359685, 359688, G02B 2764, G02B 1514, G02B 1515

Patent

active

057609578

ABSTRACT:
A zoom lens having the vibration-reduction function includes, in succession from the object side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having negative refractive power, and a fourth lens unit having positive refractive power. The fourth lens unit includes, in succession from the object side, a front group having positive refractive power and a rear group having positive refractive power. During the focal-length change from the wide angle end to the telephoto end, the spacing between the first lens unit and the second lens unit is increased, the spacing between the second lens unit and the third lens unit and the spacing between the third lens unit and the fourth lens unit are non-linearly varied. At least one of the third lens unit and the front group in the fourth lens unit is provided for movement in a direction substantially orthogonal to the optical axis thereof.

REFERENCES:
patent: 5040881 (1991-08-01), Tsuji
patent: 5121978 (1992-06-01), Maruyama
patent: 5223979 (1993-06-01), Yoneyama
patent: 5249079 (1993-09-01), Umeda
patent: 5270857 (1993-12-01), Oizumi et al.
patent: 5272564 (1993-12-01), Suzuki et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1467248