Patent ID: 7903347

Claim:
A lens apparatus comprising: a guide barrel including a guide groove portion formed on a circumferential wall of the guide barrel so as to penetrate therethrough; a cam barrel disposed rotatably in a circumferential direction thereof and including a penetrating cam groove portion formed on a circumferential wall of the cam barrel so as to penetrate therethrough and a non-penetrating cam groove portion formed on the circumferential wall of the cam barrel so as not to penetrate therethrough, a first holding member holding a first optical element and being moved in an optical axis direction of the lens apparatus by the guide groove portion and the penetrating cam groove portion with rotation of the cam barrel; a second holding member holding a second optical element and being moved in the optical axis direction by the guide groove portion and the non-penetrating cam groove portion with the rotation of the cam barrel; and an adjusting mechanism used for adjusting a position of one of the first and second optical elements relative to that of the other.