Nippon Kogaku K.k.

Yuji Ohkubo

Naoki Tomino

Mikio Takemae

Masaaki Tsukamoto

A display device for simultaneously displaying a manual mode exposure and correction values for optimal exposures of other modes is provided. As a result, a compact display device for displaying a deviation from an optimal exposure of a manual mode and exposure correction values for optimal exposures in aperture-priority, shutter-priority and program modes within the viewfinder at a sufficient resolution.

Camera display device

A camera is adapted to support a flash device capable of functioning in synchronism with camera exposure operation when electrically connected thereto and of generating electrical energy and to transmit same to the camera when the flash device is in condition to flash. A display device is operable in one mode by the generated electrical energy and apparatus is provided to set the exposure condition and includes a switch operable when that condition exceeds a predetermined value. Apparatus are operable by the generated energy through the switch to activate the display device in a second mode in response to the setting of the exposure condition.

Information display device for camera

A flash output control apparatus for a camera comprises a switch including a contact segment movable between a first electrical contact and a second electrical contact, and control means. Interlocking with the full opening of exposure aperture by the shutter device, the contact segment moves apart from the first contact and then comes into contact with the second contact. When the contact segment leaves the first contact toward the second one, the flash output control circuit is brought into operation. Thereafter, when the contact segment comes into contact with the second contact, the flash tube starts flashing.

Flash output control apparatus for camera

A device in a camera is provided with a light-emitting element driven by a signal current from an electronic flash device to emit light and indicate the ready-to-flash condition of the electronic flash device, a current control circuit series-connected to the light-emitting element to control a current flowing to the light-emitting element, an integrated circuit operative in response to the signal current from the electronic flash device, and a limiting circuit for detecting a voltage related to the combined voltage of the light-emitting element and the current control circuit and limiting an applied voltage applied to the integrated circuit so as to be below a predetermined value when said voltage exceeds a predetermined value.

Ready-to-flash condition indicating device for a camera

A camera provided with first connecting means capable of being selectively coupled to second connecting means of a flash bulb unit and third connecting means of an electronic flash unit and having a first terminal connectable in common to a synchronizing terminal in the second connecting means and a tuning shutter time setting signal terminal in the third connecting means, a second terminal connected to a synchronizing terminal in the third connecting means, and a third terminal connected in common to ground terminals in the second and third connecting means includes a tuning shutter time setting circuit having its input terminal connected to the first terminal, and a protective circuit for the tuning shutter time setting circuit.

Growing community of inventors

Ohmiya, Japan

Yuji Ohkubo