| US 7,595,937 B2 | ||
| Lens apparatus and image-pickup apparatus | ||
| Toshiyuki Yasuda, Kawasaki (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Feb. 20, 2007, as Appl. No. 11/676,762. | ||
| Claims priority of application No. 2006-042893 (JP), filed on Feb. 20, 2006. | ||
| Prior Publication US 2007/0195437 A1, Aug. 23, 2007 | ||
| Int. Cl. G02B 15/14 (2006.01); G02B 7/02 (2006.01) | ||
| U.S. Cl. 359—700 [359/819; 359/822; 359/824] | 10 Claims |
| 1. A lens apparatus which provides a variable magnification by moving a first lens and a second lens in the direction of an
optical axis, the second lens being placed closer to an image plane than the first lens, comprising:
a first driving member which is rotated around the optical axis to move the first lens in the optical axis direction;
a second driving member which moves the second lens in the optical axis direction; and
a driving mechanism which at least drives the rotation of the first driving member,
wherein the second driving member is moved in the optical axis direction relative to the first driving member by the rotation
of the first driving member.
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