Image pickup apparatus and lens device
AssigneeCanon Kabushiki Kaisha
InventorYuya Fujiwara
Life of this patent
Estimating the term…
Abstract
An image pickup apparatus having a construction which enhances the degree of freedom in layout and enables size reduction. The image pickup apparatus includes a lens barrel, and an upper barrier group and a lower barrier group that open and close a front face of the lens barrel. The upper and lower barriers are rotated about respective upper and lower barrier rotary shafts disposed on a plane perpendicular to an optical axis of the lens barrel. A first spur gear and a second spur gear connected thereto are provided on a side of the lens barrel. A member transmits the rotation of the first spur gear driven by a motor to the lower barrier group, and another member transmits the rotation of the second spur gear to the upper barrier group.
Claims8
An image pickup apparatus including a lens barrel, and a barrier that rotates about a barrier rotary shaft provided on a plane perpendicular to an optical axis of the lens barrel, for opening and closing a front face of the lens barrel,
- wherein the barrier is divided into at least a first barrier and a second barrier,
- the image pickup apparatus comprising:
- a first gear provided on a side of the lens barrel;
- a second gear connected to said first gear and configured to rotate in a direction opposite to a direction of rotation of said first gear;
- one transmission member configured to transmit rotation of said second gear to thereby cause the second barrier to rotate in a direction opposite to a direction of the rotation of the first barrier;
- and
- another transmission member configured to transmit the rotation of said first gear to the one transmission member to thereby cause the first barrier to rotate.
A lens device that is used in an optical apparatus, and includes a lens barrel, and a barrier that rotates about a barrier rotary shaft provided on a plane perpendicular to an optical axis of the lens barrel, for opening and closing a front face of the lens barrel,
- wherein the barrier is divided into at least a first barrier and a second barrier,
- the lens device comprising:
- a first gear provided on a side of the lens barrel;
- a second gear connected to said first gear and configured to rotate in a direction opposite to a direction of rotation of said first gear;
- one transmission member configured to transmit rotation of said second gear to thereby cause the second barrier to rotate in a direction opposite to a direction of the rotation of the first barrier;
- and
- another transmission member configured to transmit the rotation of said first gear to the one transmission member to thereby cause the first barrier to rotate.
Dependencies are inferred from the claim text.