Nikon Corporation

Kazuharu Imafuji

Masafumi Oikawa

Shunji Nagaya

Shigeo Takahashi

Nobuhiko Terui

Hidehiro Ogawa

Toru Kosaka

Akihiro Ozone

Yasuyuki Motoki

Akihiro Sugiyama

Akira Katayama

Hiroshi Okano

Sueyuki Ohishi

Susumu Sato

Yoshio Imura

Tadao Kai

Tatsuo Amanuma

Shigemasa Sato

Kimio Uematsu

Tsutomu Narisawa

Yoshio Matsuzawa

Toshiharu Matsuda

Keiko Tsuchiya

Izumi Kumazawa

An exchangeable lens includes: a mount unit at which a camera body is detachably engaged; a plurality of drive target members, conditions of which change as a drive force is applied thereto; an initialization unit that executes initialization processing for each of the plurality of drive target members; an initialization status transmission unit that transmits initialization statuses, each indicating a status of the initialization processing executed for one of the drive target members, to the camera body via a first transmission path over predetermined first cycles; and a drive condition transmission unit that transmits a drive condition of at least one drive target member among the plurality of drive target members to the camera body via a second transmission path different from the first transmission path over predetermined second cycles different from the predetermined first cycles.

Exchangeable lens and camera body

An accessary that is attachable to a camera body, includes a first power terminal to which a first drive power is supplied from the camera body; a second power terminal to which a second drive power is supplied from the camera body; a first ground terminal that is a ground terminal corresponding to the first drive power; a second ground terminal that is a ground terminal corresponding to the second drive power; and a communication terminal group consisting of a plurality of terminals used for a first data communication with the camera body and a second data communication with the camera body, the second data communication being independent of the first data communication. The plurality of terminals of the communication terminal group are arranged directly adjacent to each other, and the first ground terminal is arranged between the first power terminal and the communication terminal group.

Interchangeable lens, camera body, and electronic device

An interchangeable device that is attachable to an electronic device includes a first communication unit communicating with the electronic device via a first path; and a second communication unit communicating with the electronic device via a second path. The first path includes a first contact that outputs to the electronic device a signal indicating whether it is possible to perform communication via the first path, a second contact that communicates a first clock signal with the electronic device, a third contact to which a signal is input from the electronic device synchronized with the first clock signal, and a fourth contact that outputs a signal to the electronic device synchronized with the first clock signal. The second path includes a seventh contact communicating a second clock signal with the electronic device, and an eighth contact that outputs to the electronic device a signal synchronized with the second clock signal.

An interchangeable lens to be detachably attached to a camera body, that includes a holding unit at which a plurality of contacts is arranged, the interchangeable lens includes: a first communication contact system arranged at the holding unit; and a second communication contact system different from the first communication contact system, arranged at the holding unit at a position different from a position at which the first communication contact system is arranged. The fourth contact is arranged at a position closer to the second communication contact system than the first contact, the second contact, and the third contact are, and the seventh contact and the eighth contact are arranged at positions closer to the first communication contact system than the fifth contact and the sixth contact are.

An interchangeable lens includes: an attachment section to which a camera body is to be attached; a photographic optical system that includes a plurality of driven members whose driven state changes; a driven information transmission unit that transmits a plurality of items of driven information to the camera body according to a clock signal outputted from the camera body, the plurality of items of driven information being related to positions of the plurality of driven members; and a type information transmission unit that transmits type information via a first transmission unit, the type information representing a type of driven information which can be transmitted by the driven information transmission unit; wherein the driven information transmission unit transmits the driven information for each of the plurality of driven members via a second transmission unit that is different from the first transmission unit.

Interchangeable lens

A camera accessory is configured to be detachably mounted to a camera body. The camera accessory includes an accessory contact point configured, when the camera accessory is mounted to the camera body, to output to the camera body a ready signal that indicates whether or not an information communication operation with the camera body is enabled. The camera accessory also includes a pull-down resistor electrically connected to the accessory contact point.

Camera accessory, camera body and camera system

An interchangeable lens to be detachably attached to a camera body, that includes a holding unit at which a plurality of contacts is arranged, in the interchangeable lens, the first contact is arranged on one end and the eleventh contact is arranged on another end of the arrangement of the twelve contacts; the second contact is arranged next to the first contact in the arrangement of the twelve contacts; and the twelfth contact is arranged next to the eleventh contact in the arrangement of the twelve contacts.

Interchangeable lens, camera body and electronic device

Growing community of inventors

Kawasaki, Japan

Kazuharu Imafuji