US 10,591,807 B2Granted

Image capturing apparatus and accessories

AssigneeCanon Kabushiki Kaisha

InventorsJun Kamiya, Yasuyuki Watazawa, Naoto Fujihashi

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Abstract

An image capturing apparatus on which, and from which, an accessory is mountable and dismountable includes a plurality of terminals disposed in a circumferential direction of a mount, and a terminal holder. The terminal holder has a height level difference for holding the terminals at different positions in a center-axis direction of the mount. The terminals include a first terminal configured to be used to supply power for driving an internal component of the accessory, and a second terminal configured to indicate a ground level corresponding to the first terminal. The second terminal is disposed nearer in a mount direction of the accessory than the other terminals on a predetermined stage of the terminal holder, and is connected to a corresponding one of a plurality of terminals of the accessory first among the terminals when the accessory is mounted on the image capturing apparatus.

Claims27

Dependent claims

A mount apparatus comprising a second mount configured to allow coupling to a first mount included in an accessory, the accessory being mountable on and dismountable from the mount apparatus by rotating a plurality of claw portions of the first mount relative to a plurality of claw portions of the second mount in a mount direction substantially orthogonal to a center-axis direction of the second mount, wherein

the mount apparatus includes
a plurality of terminals disposed in a circumferential direction of the second mount and configured to be used in electrical connection, and
a terminal holder configured to hold the plurality of terminals,
the terminal holder has a height level difference for holding the plurality of terminals at different positions in the center-axis direction of the second mount,
the plurality of terminals include a first terminal configured to be used to supply power for driving an internal component of the accessory, a second terminal configured to indicate a ground level corresponding to the first terminal, and a third terminal configured to detect a type of the accessory mounted on the mount apparatus,
the terminal holder has a first stage and a second stage at different positions in the center-axis direction of the second mount,
in a state where the accessory is mounted on the mount apparatus, the second stage projects toward the accessory in the center-axis direction further than the first stage,
the first stage is located nearer than the second stage in a mount direction of the accessory,
wherein, among the plurality of terminals, the first terminal and the third terminal are disposed adjacent to each other and the second terminal and the third terminal are disposed adjacent to each other on the second stage of the terminal holder, and
the second terminal is disposed nearer in the mount direction of the accessory than the first terminal and the third terminal of the plurality of terminals on the second stage of the terminal holder.

7 more elements

An accessory comprising a first mount configured to allow coupling to a second mount included in a mount apparatus, the accessory being mountable on and dismountable from the mount apparatus by rotating a plurality of claw portions of the first mount relative to a plurality of claw portions of the second mount in a mount direction substantially orthogonal to a center-axis direction, wherein

the accessory includes
a plurality of terminals disposed in a circumferential direction of the second mount and configured to be used in electrical connection, and
a terminal holder configured to hold the plurality of terminals,
the terminal holder has a height level difference for holding the plurality of terminals at different positions in the center-axis direction of the second mount,
the plurality of terminals include a first terminal configured to receive power for driving an internal component of the accessory from the mount apparatus, a second terminal configured to indicate a ground level corresponding to the first terminal, and a third terminal configured to be used for indicating a type of the accessory,
the terminal holder has a first stage and a second stage at different positions in the center-axis direction of the first mount,
in a state where the accessory is mounted on the mount apparatus, the first stage projects towards the mount apparatus in the center-axis direction further than the second stage,
the first stage is located nearer than the second stage in a mount direction of the accessory,
wherein, among the plurality of terminals, the first terminal and the third terminal are disposed adjacent to each other and the second terminal and the third terminal are disposed adjacent to each other on the second stage of the terminal holder, and
the second terminal is disposed nearer in the mount direction of the accessory than the first terminal and the third terminal of the plurality of terminals on the second stage of the terminal holder.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/992,510Filed 30 May 2018
Priority: JP 2017-10827331 May 2017
Published: US 2018/0348604 A16 Dec 2018
Granted: 17 Mar 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

G03B 17/565
Accessories: optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors
G03B 7/20
Control of exposure by setting shutters, diaphragms or filters, separately or conjointly: in accordance with change of lens
G03B 17/14
With means for supporting objectives, supplementary lenses, filters, masks, or turrets: interchangeably
G03B 17/18
Details of cameras or camera bodies; Accessories therefor: signals indicating condition of a camera member or suitability of light