Diaphragm movement device

Details Diaphragm movement device Diaphragm movement device

1995-09-19

1998-05-19

Blankenship, Howard B.

Photography

Having variable focal length of camera objective

Having focus operation

396505, 359740, G03B 902

Patent

active

057549079

ABSTRACT:
A diaphragm movement device that moves a diaphragm mechanism with movement of a lens group to improve optical performance is disclosed. The diaphragm movement device includes a first lens group, a second lens group that is movable in the direction of the optical axis with the respect to the first lens group for focus and/or focal length adjustment, a diaphragm mechanism including a diaphragm blade holding ring, a diaphragm driving plate, and a diaphragm blade between the first lens group and the second lens group, and a diaphragm movement component having a protrusion and a sloped surface. An applied force member moves the diaphragm mechanism in the direction of the optical axis by a fixed amount corresponding to the movement of the second lens group in the direction of the optical axis.

REFERENCES:
patent: 4525037 (1985-06-01), Metabi

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1865145