Lens apparatus and image pickup apparatus including the same

An image pickup apparatus comprising:

• a lens apparatus;
• and
• an image pickup element configured to receive light emitted from the lens apparatus,
• wherein the lens apparatus comprises:
• a lens barrel including a first operation ring, a second operation ring, and a third operation ring that are spaced apart along an optical axis direction of an optical system and disposed in this order from an object side toward an image side, each of the first, second, and third operation rings being rotatable about an optical axis of the optical system to operate a movable optical member included in the optical system;
• and
• a driving apparatus that engages with the first, second, and third operation rings to drive the first, second, and third operation rings in a mounted state on the lens barrel,
• wherein the driving apparatus includes a first communication unit and at least one operation unit,
• wherein the lens barrel includes a second communication unit,
• wherein communication between the lens barrel and the driving apparatus is established through the first communication unit and the second communication unit,
• wherein in the mounted state, the lens barrel and the driving apparatus are fastened to each other using a first fastener and a second fastener disposed spaced apart from each other in the optical axis direction,
• wherein at least part of the first communication unit is disposed overlapping the first fastener in the optical axis direction,
• wherein in the mounted state, the second fastener is disposed between first and second operation rings in the optical axis direction,
• wherein the second communication unit is disposed spaced from the third operation ring in the optical axis direction and disposed closer to the image side than the third operation ring in the optical axis direction, and
• wherein the first fastener is disposed spaced from the third operation ring toward the image side in the optical axis direction.

A lens apparatus comprising:

• a lens barrel including a plurality of operation rings, each of which is rotatable about an optical axis of an optical system to operate a movable optical member included in the optical system;
• and
• a driving apparatus that engages with the plurality of operation rings to electrically drive the plurality of operation rings in a mounted state on the lens barrel,
• wherein the driving apparatus includes a first communication unit and at least one operation unit,
• wherein the lens barrel includes a second communication unit,
• wherein communication between the lens barrel and the driving apparatus is established through the first communication unit and the second communication unit,
• wherein in the mounted state, the lens barrel and the driving apparatus are fastened to each other using a first fastener and a second fastener disposed spaced apart from each other in the optical axis direction,
• wherein in the mounted state, at least one first operation ring, among the plurality of operation rings, is disposed on the object side of the second fastener in the optical axis direction of the optical system,
• wherein in the mounted state, at least one second operation ring, among the plurality of operation rings, other than the at least one first operation ring, is disposed between the first fastener and the second fastener in the optical axis direction of the optical system, and
• wherein at least part of the first communication unit is disposed overlapping the first fastener in the optical axis direction of the optical system.

A driving apparatus engaged with an operating ring and configured to drive the operating ring in a mounted state where the driving apparatus is mounted on a lens barrel having the operating ring rotatable about an optical axis of the lens barrel to operate a movable optical element included in the lens barrel, the driving apparatus comprising:

• a first communication unit that communicates with the lens barrel;
• and
• an operating unit configured to be operable to drive the operating ring,
• wherein the lens barrel and the driving apparatus are fastened to each other with a plurality of fasteners disposed apart from each other in a direction of the optical axis in the mounted state,
• wherein the first communication unit is disposed at a position where the first communication unit does not protrude from the operating unit in the direction of the optical axis, and
• wherein at least part of the first communication unit is disposed to overlap one of the plurality of fasteners in the direction of the optical axis.