Optical: systems and elements – Lens – With variable magnification
Patent
1999-03-31
2000-05-16
Epps, Georgia
Optical: systems and elements
Lens
With variable magnification
359701, G02B 1514
Patent
active
060645334
ABSTRACT:
The first, movable encloses the front, middle and rear lens groups. The front and rear lens groups are supported by a front and a rear lens cell, respectively. At least one of the front and rear lens cells is an integral part of the front lens barrel. The front and rear lens cells are located at a fixed distance with respect to one another. The middle lens group is supported by a mid-lens cell. The mid-lens cell is slidably movable within the first, movable barrel and has at least three external cam followers. The second, movable barrel engages and at least partially encloses the first barrel and includes three cam grooves engaging the cam followers. The motor is operatively connected to the second, movable barrel. The motor rotates the second, movable, so that the second, movable barrel moves along the optical axis with respect to the first, movable barrel. The rotation of the second movable barrel causes the cam followers to move within the cam grooves such that the mid-lens group moves axially at a different rate than the front and rear lens groups.
REFERENCES:
patent: 4198129 (1980-04-01), Vockenhuber
patent: 5194991 (1993-03-01), Yamanashi
patent: 5646790 (1997-07-01), Kohmoto et al.
patent: 5726810 (1998-03-01), Meyers
patent: 5825556 (1998-10-01), Meyers
Bedzyk Mark D.
Johnson Dean A.
Kenin Michael
Schmieder James A.
Eastman Kodak Company
Epps Georgia
Lee Younggil Timothy
Short Svetlana Z.
LandOfFree
Zoom assembly 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 assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-263943