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US 10,852,625 B2Granted
Accessory, image pickup apparatus on which same is mountable, and camera system
AssigneeCanon Kabushiki Kaisha
InventorsToshinori Yamazaki, Kunihiko Sasaki, Masahisa Tamura, Masayasu Shigematsu
Life of this patent
Estimating the term…
Abstract
An interchangeable lens assembly includes a plurality of lens-side claw portions and a lock pin concave portion. Furthermore, internal angles of a quadrangle formed by connecting a center of a first lens-side claw portion, a center of a second lens-side claw portion, a center of a third lens-side claw portion, and a center of the lock pin concave portion satisfies a predetermined condition.
Claims52
A lens mount configured to be detachably mountable to a camera mount having a restricting portion and a plurality of first bayonet claw portions, the lens mount comprising:
- a plurality of second bayonet claw portions configured to enable engagement with the plurality of first bayonet claw portions;
- and
- a restricted portion configured to be restricted by the restricting portion when the lens mount is mounted to the camera mount,
- wherein the plurality of second bayonet claw portions includes, first and second adjacent bayonet claw portions adjacent to the restricted portion in a circumferential direction, and an opposite side bayonet claw portion disposed on an opposite side of the restricted portion with respect to the first and second adjacent bayonet claw portions in the circumferential direction,
- wherein the following conditional expressions are satisfied:
- 60°<θ10<100°,
- 60°<θ20<100°,
- 60°<θ30<100°, and
- 60°<θL<100°
- where, among internal angles of a quadrangle formed by connecting a center of the opposite side bayonet claw portion, a center of the second adjacent bayonet claw portion, a center of the first adjacent bayonet claw portion, and a center of the restricted portion, θ10 is a first internal angle in which a vertex thereof is the center of the opposite side bayonet claw portion, θ20 is a second internal angle in which a vertex thereof is the center of the second adjacent bayonet claw portion, θ30 is a third internal angle in which a vertex thereof is the center of the first adjacent bayonet claw portion, and θL is a fourth internal angle in which a vertex thereof is the center of the restricted portion.
7 more elements
A camera mount comprising:
- a plurality of first bayonet claw portions;
- and
- a restricting portion,
- wherein the camera mount is configured such that a lens mount is detachably mountable to the camera mount,
- wherein the lens mount includes:
- a plurality of second bayonet claw portions configured to enable engagement with the plurality of first bayonet claw portions, and
- a restricted portion configured to be restricted by the restricting portion when the lens mount is mounted to the camera mount,
- wherein the plurality of second bayonet claw portions includes, first and second adjacent bayonet claw portions adjacent to the restricted portion in a circumferential direction, and an opposite side bayonet claw portion disposed on an opposite side of the restricted portion with respect to the first and second adjacent bayonet claw portions in the circumferential direction,
- wherein the following conditional expressions are satisfied:
- 60°<θ10<100°,
- 60°<θ20<100°,
- 60°<θ30<100°, and
- 60°<θL<100°
- where, among internal angles of a quadrangle formed by connecting a center of the opposite side bayonet claw portion, a center of the second adjacent bayonet claw portion, a center of the first adjacent bayonet claw portion, and a center of the restricted portion, θ10 is a first internal angle in which a vertex thereof is the center of the opposite side bayonet claw portion, θ20 is a second internal angle in which a vertex thereof is the center of the second adjacent bayonet claw portion, θ30 is a third internal angle in which a vertex thereof is the center of the first adjacent bayonet claw portion, and θL is a fourth internal angle in which a vertex thereof is the center of the restricted portion.
11 more elements
A lens mount configured to be detachably mountable to a camera mount having a restricting portion and a plurality of first bayonet claw portions, the lens mount comprising:
- a plurality of second bayonet claw portions configured to enable engagement with the plurality of first bayonet claw portions;
- and
- a restricted portion configured to be restricted by the restricting portion when the lens mount is mounted to the camera mount,
- wherein the plurality of second bayonet claw portions includes, first and second adjacent bayonet claw portions adjacent to the restricted portion in a circumferential direction, and an opposite side bayonet claw portion disposed on an opposite side of the restricted portion with respect to the first and second adjacent bayonet claw portions in the circumferential direction,
- wherein the following conditional expressions are satisfied:
- 75°<θ10<105°,
- 75°<θ20<105°,
- 75°<θ30<105°, and
- 75°<θL<105°
- where, among internal angles of a quadrangle formed by connecting a center of the opposite side bayonet claw portion, a center of the second adjacent bayonet claw portion, a center of the first adjacent bayonet claw portion, and a center of the restricted portion, θ10 is a first internal angle in which a vertex thereof is the center of the opposite side bayonet claw portion, θ20 is a second internal angle in which a vertex thereof is the center of the second adjacent bayonet claw portion, θ30 is a third internal angle in which a vertex thereof is the center of the first adjacent bayonet claw portion, and θL is a fourth internal angle in which a vertex thereof is the center of the restricted portion.
7 more elements
A camera mount comprising:
- a plurality of first bayonet claw portions;
- and
- a restricting portion,
- wherein the camera mount is configured such that a lens mount is detachably mountable to the camera mount,
- wherein the lens mount includes:
- a plurality of second bayonet claw portions configured to enable engagement with the plurality of first bayonet claw portions, and
- a restricted portion configured to be restricted by the restricting portion when the lens mount is mounted to the camera mount,
- wherein the plurality of second bayonet claw portions includes, first and second adjacent bayonet claw portions adjacent to the restricted portion in a circumferential direction, and an opposite side bayonet claw portion disposed on an opposite side of the restricted portion with respect to the first and second adjacent bayonet claw portions in the circumferential direction,
- wherein the following conditional expressions are satisfied:
- 75°<θ10<105°,
- 75°<θ20 <105°,
- 75°<θ30<105°, and
- 75°<θL <105°
- where, among internal angles of a quadrangle formed by connecting a center of the opposite side bayonet claw portion, a center of the second adjacent bayonet claw portion, a center of the first adjacent bayonet claw portion, and a center of the restricted portion, θ10 is a first internal angle in which a vertex thereof is the center of the opposite side bayonet claw portion, θ20 is a second internal angle in which a vertex thereof is the center of the second adjacent bayonet claw portion, θ30 is a third internal angle in which a vertex thereof is the center of the first adjacent bayonet claw portion, and θL is a fourth internal angle in which a vertex thereof is the center of the restricted portion.
11 more elements
Dependencies are inferred from the claim text.