Patent ID: 11868028
Assignee: NIKON CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. An accessory removably attachable to a camera body and including a plurality of terminals configured to come into contact with a plurality of terminals of the camera body, the accessory comprising:
a detection terminal by which the camera body detects that the accessory is attached to the camera body;
a power supply terminal group that consists of (a) at least one power supply terminal through which a power supply voltage is supplied from the camera body, and (b) at least one ground terminal used as a ground potential;
a first communication terminal used for first communication in which data is transmitted to the camera body and received from the camera body bidirectionally; and
a second communication terminal used for second communication which is performed in one direction to the camera body independently of the first communication, wherein:
the number of the at least one power supply terminal and the number of the at least one ground terminal are different from one another,
the plurality of terminals of the accessory includes the detection terminal and the power supply terminal group that are arranged in order from one end of the plurality of terminals, with the detection terminal located at the one end of the plurality of terminals and the power supply terminal group located adjacent to the detection terminal, and
the at least one power supply terminal is disposed farther from the second communication terminal than from the first communication terminal.