Automatic diaphragm assembly

Details Automatic diaphragm assembly Automatic diaphragm assembly

1977-03-16

1978-09-12

Corbin, John K.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250229, 350315, 354271, 354274, G05D 2500

Patent

active

041133595

ABSTRACT:
An automatic diaphragm assembly for use in an optical or optoelectronic image pick-up device having lens systems, comprising diaphragm blades forming a variable aperture, at least one neutral-density filter element movable with one of the diaphragm blades, and an electromagnetic drive unit including a ring-shaped permanent magnet having locally magnetized pole portions alternately disposed circumferentially of the magnet and a ferromagnetic ring forming a circular air gap between the permanent magnet and the ferromagnetic ring.

REFERENCES:
patent: 2655848 (1953-10-01), Gray, Jr.
patent: 3700314 (1972-10-01), Busby, Jr.
patent: 3836234 (1974-09-01), Farnsworth
patent: 4060313 (1977-11-01), Kondo

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2381786