Lens driving apparatus, lens barrel and optical apparatus

A lens barrel comprising:

• a lens group;
• and
• a lens driving apparatus that moves the lens group in an optical axis direction,
• wherein the lens driving apparatus comprises:
• a lens holding member that holds an optical lens;
• a rack provided in the lens holding member and that transmits a motor driving force to the lens holding member;
• a first guide part that supports the lens holding member so as to be movable back and forth in an optical axis direction of the optical lens;
• a second guide part that supports the lens holding member so as to be movable back and forth in the optical axis direction, farther separated from the rack than the first guide part in a direction orthogonal to the optical axis direction;
• a first contact part and a second contact part provided in the lens holding member, with which the first guide part and the second guide part respectively are in contact;
• and
• an energizing member that energizes the second contact part at a position separated in the longitudinal direction of the second guide part so as to be in contact with the second guide part.

An optical apparatus comprising:

• a camera;
• and
• a lens barrel which is demountable from the camera and has a lens group;
• and
• a lens driving apparatus that moves the lens group in an optical axis direction,
• wherein the lens driving apparatus comprises:
• a lens holding member that holds an optical lens;
• a rack provided in the lens holding member and that transmits a motor driving force to the lens holding member;
• a first guide part that supports the lens holding member so as to be movable back and forth in an optical axis direction of the optical lens;
• a second guide part that supports the lens holding member so as to be movable back and forth in the optical axis direction, farther separated from the rack than the first guide part in a direction orthogonal to the optical axis direction;
• a first contact part and a second contact part provided in the lens holding member, with which the first guide part and the second guide part respectively are in contact;
• and
• an energizing member that energizes the second contact part at a position separated in the longitudinal direction of the second guide part so as to be in contact with the second guide part.