Lens apparatus, optical apparatus and camera

摘要

The lens apparatus allows adjustment of lens tilt due to component variation caused by tolerance. The lens barrel includes a straight guiding barrel having a straight groove portion, a cam barrel having a cam groove portion, a straight movable barrel disposed outside the straight guiding and cam barrels, holding a lens and being movable in an optical axis direction by a relative movement of the straight guiding and cam barrels. A cam follower includes first and second cylindrical portions that respectively engage with the straight groove and cam groove portions. The first and second cylindrical portions have central axes decentered from each other. The cam follower includes an operation portion allowing rotational operation of the first and second cylindrical portions from outside of the straight movable barrel. A connecting member connects the cam follower and the straight movable barrel with each other.

主权项

1. A lens apparatus comprising:
a straight guiding barrel having a straight groove portion; a cam barrel having a cam groove portion; a straight movable barrel disposed outside the straight guiding barrel and the cam barrel, and holding a lens, the straight movable barrel being movable in an optical axis direction by a relative movement of the straight guiding barrel and the cam barrel; a cam follower including:
a first cylindrical portion and a second cylindrical portion that respectively engage with the straight groove portion and the cam groove portion, the first and second cylindrical portions having central axes decentered from each other, andan operation portion extending from one of the first or second cylindrical portion and allowing rotational operation of the first and second cylindrical portions from outside of the straight movable barrel; and a connecting member connecting the cam follower and the straight movable barrel with each other to pull the cam follower inside of the straight movable barrel, a central axis of the connecting member coinciding with a central axis of either the first cylindrical portion or the second cylindrical portion, wherein the operation portion is exposed outside of the straight movable barrel.