摘要:
An adapter matches an electronic flash unit with a single terminal carrying diaphragm and charge data to a camera having separate terminals for these data. A second adapter matches a flash unit having two terminals for diaphragm and charge data to a camera in which these data pass through a single terminal. Circuitry in the adapters combine or separate the data as needed.
摘要:
A selector circuit interrupted by an electrical signal from an attachment selectively mounted on the camera body and is connected in the light receiving circuit as well as the exposure determining circuit provided in the camera. When the above mentioned unit is mounted on the camera the exposure determining circuit provided in the camera is automatically connected from the light receiving circuit to the output terminal of the unit by means of the selector circuit, so as to receive the exposure value signal on the unit and set the exposure value corresponding to the exposure value signal.
摘要:
A camera system is composed of a flash and a camera in which the diaphragm and shutter time control as well as the indicating mechanism are automatically switched into a flash mode in response to the charge accumulation completion signal from the electronic flash discharge device.
摘要:
In a camera provided with a day-light exposure range and with a flash exposure range, an automatic exposure control system for controlling the iris of the camera in accordance with a computed exposure value and a preselected shutter time is associated with a flash exposure time range bracketing device in order to insure that the formation of a correct flash exposure aperture is effected with automatic selection of one of the bracketed exposure times despite an accidentally incorrect setting of the shutter dial of the camera which may be encountered particularly when the day-light exposure range is to be left for the flash exposure range without the necessary manipulation of the shutter dial therefor. The bracketing device of the present invention comprises three timing circuits in combination with a selector responsive to the position of the shutter dial for selecting either the first, or the second, or the third timing circuit for cooperation with an electronic switch controlling the period of actuation of the camera shutter when the shutter dial is set either within, or on the faster side of, or on the slower side of a possible flash exposure time range respectively, whereby the resultant actuation period is equal to either the shutter time preselected on the shutter dial, or the faster limit of, or the slower limit of the flash exposure time range respectively.
摘要:
A voltage detecting means is provided in a flash lamp firing circuit for detecting the attainment of the voltage of a storage capacitor to a satisfactory lamp firing voltage level to assure that a photographic camera associated with the flash lighting unit operates in a flash exposure range switched from a daylight exposure range only when a sufficient voltage is available to fire the lamp at the time of striking of the lamp. In one embodiment, the detecting means comprises two transistorized circuits having output terminals one of which is connected to the gate lead of a SCR in a discharge circuit of the lamp, and another output terminal which is arranged to be connectable to a light-emitting diode of the camera and therefrom connected to the gate lead of an electronic change-over switch for selection of the operating ranges of the camera, the light-emitting diode being arranged to be visible from the outside of the camera so that the operator is immediately aware if the storage capacitor voltage has attained the satisfactory firing level.
摘要:
The present invention relates to various kinds of the flash light photographic systems consisting of a combination of either of the below mentioned cameras with either of the below mentioned flash light device;a camera CD presenting an input terminal of the information for controlling the diaphragm and the output terminal of the information for the set aperture,a flash light device SD presenting the output terminal of the information for controlling the diaphragm and the input terminal of the information of the set aperture,a camera CT presenting an input terminal of the information for controlling the diaphragm,a camera CA presenting an output terminal of the information of the set aperture,a flash light device ST presenting an output terminal of the information for controlling the diaphragm,a flash light device AS presenting an input terminal of the information of the set aperture.
摘要:
The present invention relates to various kinds of the flash light photographic systems consisting of a combination of either of the below mentioned cameras with either of the below mentioned flash light device;A camera CD presenting an input terminal of the information for controlling the diaphragm and the output terminal of the information for the set aperture,A flash light device SD presenting the output terminal of the information for controlling the diaphragm and the input terminal of the information of the set aperture,A camera CT presenting an input terminal of the information for controlling the diaphragm,A camera CA presenting an output terminal of the information of the set aperture,A flash light device ST presenting an output terminal of the information for controlling the diaphragm,A flash light device AS presenting an input terminal of the information of the set aperture.
摘要翻译:本发明涉及各种类型的闪光照相系统,其由以下提到的照相机中的任一种与下述闪光灯装置中的任一种组合构成; 一个CAMERA CD,其中显示用于控制光圈的信息的输入端和用于设定光圈的信息的输出端,A闪光灯设备SD,其提供用于控制光阑的信息的输出端和输入端的信息 设置光圈,A CAMERA CT,其呈现用于控制光阑的信息的输入端子; A CAMERA CA,呈现设定孔径的信息的输出端子; A闪光灯装置,ST呈现用于控制光阑的信息的输出端子 ,闪光灯装置,用于呈现设定光圈的信息的输入端。
摘要:
A camera which permits change-over between different light measuring systems is disclosed. The camera includes a first light measuring element which measures light coming from an object to be photographed and an operational amplifier responsive to the element. A light measurement information producing circuit is included for producing a light measurement information signal for exposure computation. A change-over device is connected between the light measurement information producing circuit and the operational amplifier. The change-over device is arranged to be shiftable between a first position wherein the operational amplifier is connected to the light measurement information producing circuit and a second position wherein the operational amplifier is not so connected. An accessory device is attachable to the camera body. The accessory device includes a second light receiving element for measuring light from the object within a light measurement range different from that of the first light receiving element and another operational amplifier responsive thereto. A terminal is responsive to the signal from the latter operational amplifier. The terminal is disposed at the second position of the change-over device so that the signal from the latter operation is applied to the light measurement information producing circuit when the change-over device is in this position.
摘要:
A temperature compensating device for devices comprising semiconductors. The temperature compensating device comprises a temperature compensating circuit, such as a circuit including a diode, and a current control circuit which adjusts the quantity of the electric current flowing through the temperature compensating circuit. The temperature characteristic of the temperature compensating circuit is mutually compensatory with that of the output of the device comprising semiconductors. When the temperature characteristic of the output of said temperature compensating circuit differs from that of the output of such semiconductor device, the current control circuit causes a current which corresponds to the difference between the temperature coefficient of the compensating circuit and that of the semiconductor device to flow through the temperature compensating circuit, so that satisfactory temperature compensation can be accomplished.
摘要:
The present invention relates to a control system consisting of a semi-conductor integrated circuit for a camera, particularly a control system from providing secure operation as well as a reduction of complexity. The system provides for separation of actuating signals from the low level signals for the integrated circuit so as to prevent added noise of the actuating signals from mixing with the low level signal.