Lens photographing distance range limiting device

Details Lens photographing distance range limiting device Lens photographing distance range limiting device

1987-10-27

1989-08-08

Gellner, Michael L.

G02B 704

Patent

active

048546739

ABSTRACT:
A distance range limiting device which can readily be accommodated in a miniaturized lens barrel. A limiting protrusion is formed on a rotary ring which is rotated in the focusing operation of an interchangeable lens in such a manner that the limiting protrusion is protruded radially. A switching member which can be externally turned about a rotary shaft perpendicular to the optical axis of the lens is provided on a stationary ring which covers the rotary ring, and a limiting member is provided on the switching member at a position away from the center the center of rotation of the switching member. In response to the operation of the switching member, the limiting member is moved between an interference position where the limiting member interferes with the limiting protrusion and a noninterference position where the limiting member does not interfere with the limiting protrusion.

REFERENCES:
patent: 3841735 (1974-10-01), Katagiri et al.
patent: 4533218 (1985-08-01), Nakazato et al.
patent: 4639083 (1987-01-01), Fuziwara et al.

Affiliated with

Also associated with

Rating

Lens photographing distance range limiting 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 Lens photographing distance range limiting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lens photographing distance range limiting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-900994