Lens accessory, lens apparatus, and image pickup apparatus
AssigneeCanon Kabushiki Kaisha
InventorYasuhiro Hatakeyama
Life of this patent
Estimating the term…
Abstract
A lens accessory (1) is detachably attached to a lens barrel (2), and includes a first holder (104) and a second holder (105) for holding the lens barrel, an operation member (102) that moves at least one holder of the first holder and the second holder between a first position and a second position, and a biasing mechanism (110) that applies a biasing force to the at least one holder so as to hold the lens barrel, the biasing mechanism includes a first biasing member and a moving member that moves the at least one holder from the first position to the second position according to an operation of the operation member via the first biasing member, and when the at least one holder contacts the lens barrel, the first biasing member is displaced by the moving member.
Claims16
A lens accessory detachably attached to a lens barrel, the lens accessory comprising:
- a first holder and a second holder configured to hold the lens barrel;
- an operation member configured to move at least one holder of the first holder and the second holder between a first position and a second position;
- and
- a biasing mechanism configured to apply a biasing force to the at least one holder so as to hold the lens barrel,
- wherein the biasing mechanism includes a first biasing member and a moving member that moves the at least one holder from the first position to the second position according to an operation of the operation member via the first biasing member, and
- wherein when the at least one holder contacts the lens barrel, the first biasing member is displaced by the moving member.
A lens apparatus comprising:
- a lens barrel;
- and
- a lens accessory detachably attached to the lens barrel,
- wherein the lens accessory comprises:
- a first holder and a second holder configured to hold the lens barrel;
- an operation member configured to move at least one of the first holder and the second holder between a first position and a second position;
- and
- a biasing mechanism configured to apply a biasing force to at least one of the first holder and the second holder so as to hold the lens barrel, and
- wherein the operation member moves at least one of the first holder and the second holder between the first position and the second position according to a rotational operation of the operation member.
An image pickup apparatus comprising:
- a lens barrel;
- an image sensor configured to photoelectrically convert an optical image formed via the lens barrel to output image data;
- and
- a lens accessory detachably attached to the lens barrel,
- wherein the lens accessory comprises:
- a first holder and a second holder configured to hold the lens barrel;
- an operation member configured to move at least one of the first holder and the second holder between a first position and a second position;
- and
- a biasing mechanism configured to apply a biasing force to at least one of the first holder and the second holder so as to hold the lens barrel, and
- wherein the operation member moves at least one of the first holder and the second holder between the first position and the second position according to a rotational operation of the operation member.
Dependencies are inferred from the claim text.