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91. 发明专利

JPS58149027A CONTROL CIRCUIT OF ELECTROMAGNETICALLY DRIVEN PROGRAM SHUTTER 失效
公开(公告)号：JPS58149027A
公开(公告)日：1983-09-05
申请号：JP3209882
申请日：1982-03-01
申请人： COPAL CO LTD
发明人： KUROSU TOMIO , YOSHIKAWA YUKIO
IPC分类号： G03B7/087 , G03B7/081 , G03B9/24
摘要： PURPOSE:To make an electric power source usable with the highest efficiency even if temp. changes, by compensating the change in the operation of shutter blades by the electromagnetic force of a driving coil for the shutter blades changed with a change in temp. thereby correcting reference voltage by making use of the temp. characteristics of a temp. detector so as to obtain correct exposure. CONSTITUTION:A temp. sensor having prescribed temp. characteristics, that is, a temp. detector 27 is disposed in a generating circuit for reference voltage, in the position where the temp. of a driving coil for shutter blades can be detected. Said detector is connected as shown in the figure. The temp. characteristics of the detector 27 are so selected that the reference voltage V2 outputted from the generating circuit for reference voltage is dropped under suitable conditions as the ambient temp. changes from low to high temps.

92. 发明专利

JPS56119118A EXPOSURE TIME SETTING DEVICE FOR ELECTRIC SHUTTER 失效
公开(公告)号：JPS56119118A
公开(公告)日：1981-09-18
申请号：JP2312580
申请日：1980-02-26
申请人： COPAL CO LTD
发明人： KUROSU TOMIO , OKAJIMA KOUICHI
IPC分类号： G03B7/00 , G03B17/18
摘要： PURPOSE:To improve the operability of an electric shutter and to simplify its mechanism, by making it possible to set manual exposure time through push-button operation. CONSTITUTION:When the push button that corresponds to an exposure time of 1/250-4sec is pushed and released, signals encoded by encoders EC1 and EC2 are inputted to and latched by a latch circuit. With the output of the latch circuit, light emitting diode LED1-11 turns on to display a set value. When release switch S0 is changed over to terminal (b) during photographing, the output of a flip-flop triggers one-shot multivibrator OSM1 to supply electric current to leading-curtain release coil L1. Further, the output of an oscillator is inputted to a frequency dividing circuit and when an output level inputted to a multiplexer terminal selected by the encoders is inverted, vibrator OSM2 is triggered to release the trailing curtain.

93. 发明专利

JPS564124A CONTROL CIRCUIT OF ELECTROMAGNETIC SHUTTER 失效
公开(公告)号：JPS564124A
公开(公告)日：1981-01-17
申请号：JP8000179
申请日：1979-06-25
申请人： COPAL CO LTD
发明人： KUROSU TOMIO , OKAJIMA KOUICHI
IPC分类号： G03B7/00 , G03B7/083 , G03B9/08 , G03B9/10 , G03B17/18
摘要： PURPOSE:To eliminate any inconvenience in shutter opening and closing operations even if the set exposure time is put in the state that it exceeds the maximum speeds of the shutter devices used by so constituting the circuit that several kinds of shutter devices of different maximum speeds are selected for the control box and may be electrically connected by means of connectors. CONSTITUTION:The circuit is so constituted that several kinds of shutter devices of different maximum speeds respectively provided with the electromagnetically driven control parts for opening and closing shutter blades may be selected and electrically connected by means of connectors to the control box which is built therein with the electric circuits for controlling exposure time by making use of the counter dividing oscillation output and is disposed with the exposure time setting part setting the exposure time by selecting the output terminals of the said counter on the operation surface. Electrical signals are output by making use of the signal parts provided by differing in the maximum speeds to the respective shutter devices and the signal outputs thereof and part of the foregoing counter outputs are led to a gate circuit which in turn generates the output signal corresponding to the exposure time of the maximum speed.

94. 发明专利

JPS5499424A ELECTROMAGNETIC DEVICE FOR CAMERA 失效
公开(公告)号：JPS5499424A
公开(公告)日：1979-08-06
申请号：JP522078
申请日：1978-01-23
申请人： COPAL CO LTD
发明人： KUROSU TOMIO , OKAJIMA KOUICHI
IPC分类号： G03B9/10 , G03B9/00 , H02K21/24

95. 发明专利

JPS5445713A ELECTROMAGNETIC MINIATURE FLAT ROTARY MACHINE 失效
公开(公告)号：JPS5445713A
公开(公告)日：1979-04-11
申请号：JP11196577
申请日：1977-09-17
申请人： COPAL CO LTD
发明人： KUROSU TOMIO , OKAJIMA KOUICHI
IPC分类号： H02K33/00

96. 发明专利

JPS53144331A EXPOSURE COMPENSATION DEVICE FOR AUTOMATIC SERVO IRIS CONTROL DEVICE 失效
公开(公告)号：JPS53144331A
公开(公告)日：1978-12-15
申请号：JP5917177
申请日：1977-05-21
申请人： COPAL CO LTD
发明人： ISHIGURO YASUO , KUROSU TOMIO
IPC分类号： G03B7/10

97. 发明专利

JPS5352128A AUTOMATIC APERTURE CONTROLLER 失效
公开(公告)号：JPS5352128A
公开(公告)日：1978-05-12
申请号：JP12631576
申请日：1976-10-22
申请人： COPAL CO LTD
发明人： ISHIGURO YASUO , KUROSU TOMIO
IPC分类号： G03B7/10 , G03B9/02

98. 发明专利

JPS52134429A AUTOMATIC SERVO DIAPHRAGM FADEEIN AND FADEEOUT DEVICE 失效
公开(公告)号：JPS52134429A
公开(公告)日：1977-11-10
申请号：JP4992476
申请日：1976-05-04
申请人： COPAL CO LTD
发明人： ISHIGURO YASUO , KUROSU TOMIO
IPC分类号： G03B19/18 , G03B21/36

99. 发明专利

JPS52100231A ELECTRIC MANUAL APERTURE CONTROL UNIT FOR CAMERA 失效
公开(公告)号：JPS52100231A
公开(公告)日：1977-08-23
申请号：JP1723276
申请日：1976-02-19
申请人： COPAL CO LTD
发明人： ISHIGURO YASUO , KUROSU TOMIO
IPC分类号： G03B7/01 , G03B7/10 , H04N5/238

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