Zooming device

Details Zooming device Zooming device

1997-09-03

1998-11-03

Perkey, W. B.

Photography

Having variable focal length of camera objective

Having focus operation

396 84, 396374, 396379, G03B 1336

Patent

active

058323171

ABSTRACT:
The zooming device comprises first and second lens groups movably supported by a guide shaft which is disposed in parallel to a cam shaft, an outer surface of which has first and second cam grooves. First and second pins provided on the first and second lens groups are engaged with the first and second cam grooves, respectively. A cam surface of the first cam groove is inclined to a plane perpendicular to the axis of the cam shaft. By varying the distance between the guide shaft and the cam shaft, the first pin and the first lens group are moved along the optical axis of the lens groups, so that a focusing adjustment is performed.

REFERENCES:
patent: 5640278 (1997-06-01), Mogamiya
patent: 5678090 (1997-10-01), Nishimura et al.
patent: 5715482 (1998-02-01), Wakabayashi et al.

Affiliated with

Also associated with

Rating

Zooming device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-702753