Zoom lens with movable diaphragm

Details Zoom lens with movable diaphragm Zoom lens with movable diaphragm

1976-12-15

1979-02-27

Sacher, Paul A.

350187, G02B 1500

Patent

active

041416368

ABSTRACT:
A mechanism for a zoom lens of the type in which the aperture defining diaphragm mechanism moves axially of the lens and changes the position of the exit pupil, where the mechanism modifies the aperture with changing focal length to maintain constant relative aperture at full relative aperture and further predetermines the stop down of the diaphragm mechanism as a function of selected relative aperture and focal length.

REFERENCES:
patent: 3589259 (1971-06-01), Imai
patent: 3631787 (1972-01-01), Shimizu
patent: 3687047 (1972-08-01), Ito
patent: 3706269 (1972-12-01), Vesugi
patent: 3710706 (1976-01-01), Sanada
patent: 3889282 (1975-06-01), Hashimoto
patent: 3970366 (1976-07-01), Sekiguchi

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-720194