Optical apparatus

Details Optical apparatus Optical apparatus

1997-01-21

1999-07-20

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359824, G02B 1514

Patent

active

059263253

ABSTRACT:
An optical apparatus includes a first lens for zooming, a second lens which is arranged in rear of the first lens on an optical axis to correct a shift of a focal plane caused by a motion of the first lens, a vibration wave motor arranged to serve as a drive source for the second lens, and a decision circuit which decides a driving direction and a driving speed of the vibration wave motor by using at least information on the positions of the first and second lenses.

REFERENCES:
patent: 4793689 (1988-12-01), Aoyagi et al.
patent: 5223981 (1993-06-01), Kaneda
patent: 5440212 (1995-08-01), Fukui

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1327388