Canon Kabushiki Kaisha

Toru Ohara

Naoto Fujihashi

Yasuyuki Watazawa

Fuya Mizuochi

Minoru Uchiyama

Yasuhiro Tamekuni

Akihiro Fujiwara

Takashi Amikura

Hitoshi Yasuda

Toshimi Iizuka

Hidefumi Notagashira

Tomoaki Yamanaka

Tsuyoshi Morofuji

Yoshiki Kino

Naoki Saito

Hidekage Sato

Suguru Tsukamoto

Katsumi Azusawa

A camera body includes a plurality of electric contacts in a first set and a second set. When a lens apparatus is mounted to the camera body, the first set of the electric contacts comes into contact with an electric contact disposed on the lens apparatus before coming into contact with the second set of electric contacts.

Imaging apparatus, lens apparatus, accessory, and camera system with contact groups and power contacts arrayed in an order

A lens apparatus is mountable to a camera body. The camera body has multiple electric contacts. Of these multiple electric contacts, when mounting the lens apparatus to the camera body, electric contacts used for second communication or third communication come into contact with an electric contact provided to the lens apparatus before electric contacts used for first communication, when mounting the lens apparatus to the camera body.

Imaging apparatus, lens apparatus, and intermediate accessory

Communication between imaging apparatus, lens apparatus, and intermediate accessory

There is provided an image capturing apparatus on which, and from which, an accessory is mountable and dismountable by relative rotation in a circumferential direction. The image capturing apparatus includes a plurality of terminals disposed in a circumferential direction of a mount and configured to be used in electrical connection, and a terminal holder. Each of the plurality of terminals is electrically connected to a corresponding terminal of the accessory. A first terminal of the terminals used in communication at a first voltage level and a second terminal of the terminals used in communication at a second voltage level lower than the first voltage level are disposed on the same stage of the terminal holder. The second terminal is a terminal connected to ground via a first resistor. The first terminal is disposed adjacent to the second terminal.

Image capturing apparatus and accessories

The accessory is detachably attachable to a camera in which multiple image capturing modes are settable. The accessory includes a display element configured to electrically display information, and a display controller configured to perform a display control for controlling turning on and off of display of the information on the display element. The display controller is configured to perform the display control depending on the image capturing mode set in the camera or on a type of the camera to which the accessory is attached.

Accessory for camera and storage medium storing display control program

An interchangeable lens detachable from a camera includes a variator lens configured to change a focal length by moving in an optical axis direction, a focus lens configured to change a focusing state of an object image by moving in the optical axis direction, a diaphragm configured to adjust an amount of light, an acquisition unit configured to acquire an amount of change in image magnification corresponding to information about a position of the variator lens, a position of the focus lens, and an aperture value of the diaphragm, and a lens control unit configured to transmit the amount of change in image magnification to the camera.

Interchangeable lens, camera, and camera system

This specification discloses a projection type display apparatus for projecting an image onto the surface of a screen, including an image display device illuminated by illuminating light from a light source and for displaying an image thereon, a projecting optical system for projecting the image from the image display device onto the surface of the screen, a condition detection device for detecting a condition related to the image, an adjusting device for adjusting the condition of the image in conformity with the output of the condition detection device, an operation device for effecting the ON/OFF of the power source of the projection type display apparatus, and a controller for causing the condition detection device to be operated and also, limiting the inputting of an input image signal to the image display device when the power source of the projection type display apparatus is switched on by the operation device.

Projection type display apparatus

A stereoscopic image-taking lens apparatus according to the present invention is attachable to an image-taking apparatus provided with an image-pickup element; wherein a shutter is changed over so that lights from the right and left optical paths are guided alternately to the image-pickup element at every predetermined time, so that parallax images are formed in time sequence on the image-pickup element. Furthermore, the stereoscopic image-taking lens apparatus sends a signal for inhibiting an image-taking operation in which the charge-storage time of the image-pickup element is longer than the predetermined time for changing over the shutter to the image-taking apparatus. Furthermore, the lens device sends a signal for changing the set allowance of a white balance to the image-taking apparatus.

Stereoscopic image-taking lens apparatus, stereoscopic image-taking system and image-taking apparatus

An optical apparatus or a control device to be used for a light flux deflecting apparatus is arranged to include at least two light flux deflecting portions and a control portion which control the driving actions of the at least two light flux deflecting portions in such a manner that, with the light flux deflecting portions applied as image shake preventing mechanisms to an optical apparatus using a plurality of light fluxes, such as a binocular, the arrangement effectively prevents such inconveniences as the necessity of using a plurality of control portions in controlling each of the light flux deflecting portions and giving a disagreeable feeling to the user due to a discrepancy arising in the amount of deflection between two light fluxes.

Optical apparatus having image shake preventing function

The present invention relates to an amplifier for amplifying an input signal. In a sensor amplifier construction according to the present invention, a series arrangement made up of a resistor and a transistor is inserted in a feedback path for an amplifier, and the collector of the transistor is connected to one input of the amplifier and a capacitor is connected between the emitter and the base of the transistor. According to the above-described arrangement, there is provided a sensor amplifier which can eliminate noise with a small-scale construction.

Sensor amplifier

Disclosed is an autofocus device, particularly an autofocus device in which focus detection is effected repeatedly. A determination is made as to whether or not a determination of the in-focus state is made continuously for a predetermined duration upon repeated detection of focus after an initial in-focus determination is made. While the determinations of the in-focus state are being made for the predetermined duration after the initial determination on the in-focus state is made, the terminals of the motor are short-circuited to apply brakes to it, and after the aforementioned duration, the motor terminals are opened, thereby stopping the motor.

Growing community of inventors

Utsunomiya, Japan

Toru Ohara