Motor-built-in photographic lens

Details Motor-built-in photographic lens Motor-built-in photographic lens

1987-11-17

1988-08-09

Gellner, Michael L.

354274, G03B 906

Patent

active

047631503

ABSTRACT:
In the disclosed lens where the size of the diaphragm aperture is determined by the opening and closing movement of a plurality of blades, the movement is carried out by a stepping motor. A rotor and a stator of the motor are built into the diaphragm, and a magnet of plastic material is used as the permanent magnet for the motor rotor.

REFERENCES:
patent: 3687042 (1972-08-01), Mizui et al.
patent: 4005448 (1977-01-01), Iwata et al.
patent: 4113359 (1978-09-01), Koike et al.
patent: 4327977 (1982-05-01), Starp
patent: 4334748 (1982-06-01), Stacklies et al.
patent: 4408858 (1983-10-01), Lee
patent: 4460253 (1984-07-01), Kawai et al.

Affiliated with

Also associated with

Rating

Motor-built-in photographic lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor-built-in photographic lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor-built-in photographic lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-921003