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US 2010/0165488 A1Published application
Lens barrel and imaging apparatus
AssigneeCanon Kabushiki Kaisha
InventorToru Ishimasa
Life of this patent
Estimating the term…
Abstract
When the lens barrel is in the storage state, a part of a lens group and a group cylinder are inserted into an aperture of a diaphragm unit and a shutter blade of a shutter unit is closed for light shielding. With this arrangement, the cylinder length in the storage state is shortened, and the performance degradation of an image sensor and optical components provided on a front side of an image sensor can be prevented as well.
Claims12
A lens barrel comprising:
- a lens that moves in a direction along its optical axis between an image-taking state and a storage state;
- a diaphragm unit configured to restrict an opening diameter of a light passing through the lens in the image-taking state;
- and
- a shutter unit configured to be opened so as not to shield the light passing through the lens in the image-taking state,
- wherein one among the diaphragm unit and the shutter unit is disposed relatively movably in a direction along the optical axis with respect to the lens and opens in the storage state so as to arrange at least a part of the lens within an aperture, and the other one closes an aperture so as to shield the light passing through the lens in the storage state.
2 more elements
A method comprising:
- moving a lens in a direction along its optical axis between an image-taking state and a storage state;
- restricting an opening diameter of a light passing through the lens in the image-taking state by a diaphragm unit;
- and
- opening a shutter unit so as not to shield the light passing through the lens in the image-taking state,
- wherein one among the diaphragm unit and the shutter unit is disposed relatively movably in a direction along the optical axis with respect to the lens and opens in the storage state so as to arrange at least a part of the lens within an aperture, and the other one closes an aperture so as to shield the light passing through the lens in the storage state.
2 more elements
A lens barrel comprising:
- a lens that moves in a direction along its optical axis between an image-taking state and a storage state;
- a diaphragm unit configured to restrict an opening diameter of a light passing through the lens in the image-taking state;
- and
- a shutter unit configured to be opened so as not to shield the light passing through the lens in the image-taking state,
- wherein the diaphragm unit is disposed relatively movably in a direction along the optical axis with respect to the lens and opens in the storage state so as to arrange at least a part of the lens within an aperture, and the shutter unit closes an aperture so as to shield the light passing through the lens in the storage state.
2 more elements
Dependencies are inferred from the claim text.