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US 2019/0162926 A1Published application
Lens apparatus and imaging apparatus
AssigneeCanon Kabushiki Kaisha
InventorKunihiko Sasaki
Life of this patent
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Abstract
A lens apparatus includes a plurality of lens holders, a first cam barrel, a second cam barrel, and a third cam barrel each having a cam groove configured to move at least one of the plurality of lens holders in an optical axis direction. The first cam barrel is located outside the second cam barrel and the third cam barrel, and the second cam barrel is located outside the third cam barrel. A predetermined condition is satisfied.
Claims12
A lens apparatus comprising:
- a plurality of lens holders;
- a first cam barrel, a second cam barrel, and a third cam barrel each having a cam groove configured to move at least one of the plurality of lens holders in an optical axis direction,
- wherein the first cam barrel is located outside the second cam barrel and the third cam barrel, and the second cam barrel is located outside the third cam barrel, and
- wherein when the first cam barrel is rotated by a first rotation angle θ1 around an optical axis, the second cam barrel rotates by a second rotation angle θ2, the third cam barrel rotates by a third rotation angle θ3, and the following expression is satisfied:
- θ1>θ2>θ3.
2 more elements
An imaging apparatus comprising:
- a lens apparatus;
- and
- a camera body configured hold an image sensor that photoelectrically converts an optical image formed via the lens apparatus,
- wherein a lens apparatus includes:
- a plurality of lens holders;
- a first cam barrel, a second cam barrel, and a third cam barrel each having a cam groove used to move at least one of the plurality of lens holders in an optical axis direction,
- wherein the first cam barrel is located outside the second cam barrel and the third cam barrel, and the second cam barrel is located outside the third cam barrel, and
- wherein when the first cam barrel is rotated by a first rotation angle θ1 around an optical axis, the second cam barrel rotates by a second rotation angle θ2, the third cam barrel rotates by a third rotation angle θ3, and the following expression is satisfied:
- θ1>θ2>θ3.
6 more elements
Dependencies are inferred from the claim text.