[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPS56138729A - Automatic dimming flash emitting device - Google Patents

Automatic dimming flash emitting device

Info

Publication number
JPS56138729A
JPS56138729A JP4308780A JP4308780A JPS56138729A JP S56138729 A JPS56138729 A JP S56138729A JP 4308780 A JP4308780 A JP 4308780A JP 4308780 A JP4308780 A JP 4308780A JP S56138729 A JPS56138729 A JP S56138729A
Authority
JP
Japan
Prior art keywords
emitting device
time
light emission
emission
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4308780A
Other languages
Japanese (ja)
Inventor
Nobuyuki Taniguchi
Tokuji Ishida
Masatoshi Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP4308780A priority Critical patent/JPS56138729A/en
Publication of JPS56138729A publication Critical patent/JPS56138729A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0514—Separate unit
    • G03B2215/0517—Housing
    • G03B2215/0553—Housing with second integrated flash

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE:To obtain a light emitting device which is controllable by either of a reflected light system or an incident light system or an incident light system by meansuring the preliminary emission of the flash emitting device, storing the time until the required quantity of irradiation light is attained and controlling the time at the regular light emission. CONSTITUTION:A flash emitting device body A and a separate photometric circuit part B are provided. In the part B, the time until the integration of the photometric output attains a predetermined level is converted to voltage and this voltage is stored, then the time lapse equal to this storage time is measured and a light emission stop signal is sent to the body A. In the body A, a switch for preliminary light emission to cause flash emission in the relation parallel to synchronizing contacts is provided, so that the correct light emission time is stored at the preliminary light emission of the body A by the photometric circuit part placed in the object position.
JP4308780A 1980-04-01 1980-04-01 Automatic dimming flash emitting device Pending JPS56138729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4308780A JPS56138729A (en) 1980-04-01 1980-04-01 Automatic dimming flash emitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4308780A JPS56138729A (en) 1980-04-01 1980-04-01 Automatic dimming flash emitting device

Publications (1)

Publication Number Publication Date
JPS56138729A true JPS56138729A (en) 1981-10-29

Family

ID=12654052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4308780A Pending JPS56138729A (en) 1980-04-01 1980-04-01 Automatic dimming flash emitting device

Country Status (1)

Country Link
JP (1) JPS56138729A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760418A (en) * 1985-09-19 1988-07-26 Canon Kabushiki Kaisha Flash photographing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760418A (en) * 1985-09-19 1988-07-26 Canon Kabushiki Kaisha Flash photographing system

Similar Documents

Publication Publication Date Title
JPS5756831A (en) Wireless dimming control system
JPS6435517A (en) Projection type rangefinding device for camera
JPS56138729A (en) Automatic dimming flash emitting device
JPS5470825A (en) Automatic strobo device
JPS56107223A (en) Dimming detecting circuit of automatic dimming speed light
JPS56109327A (en) Flash device with dimmer
JPS56165128A (en) Flashing device
GB1316633A (en) Exposure control arrangement
JPS5559446A (en) Automatic light quantity controlled flash light emission device
JPS52145220A (en) Light amount integrating circuit for automatic intensity control flash unit
JPS56168643A (en) Adapter for multilamp automatic dimming type flash device
JPS5636936A (en) Light source device for endoscope
JPS5724924A (en) Preparing device for flashlight photographying in flashing apparatus self-containing camera
JPS55126224A (en) Controlling method for light emission of strobe light emitting device
JPS56142516A (en) Flash emitting device for photographing
JPS52118975A (en) Lighting device for discharge lamp
JPS5756830A (en) Wireless lamp increasing system
JPS5784442A (en) Flash photographing device of ttl metering system
JPS5710128A (en) Multilamp light emission controlling system
JPS56151916A (en) Photographic system in which aperture is controlled by preliminary flash emission
JPS5517117A (en) Automatic dimmer operation checking device
JPS6459881A (en) Solid-state laser stabilizer
JPS5788437A (en) Dimming system electronic flash device
JPS55103540A (en) Automatic dimming electronic flash device
JPS5789742A (en) Confirmation device for film feeding state