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JPS5788436A - Built-in flash emitter of camera - Google Patents

Built-in flash emitter of camera

Info

Publication number
JPS5788436A
JPS5788436A JP55163362A JP16336280A JPS5788436A JP S5788436 A JPS5788436 A JP S5788436A JP 55163362 A JP55163362 A JP 55163362A JP 16336280 A JP16336280 A JP 16336280A JP S5788436 A JPS5788436 A JP S5788436A
Authority
JP
Japan
Prior art keywords
coupling circuit
photographed
light emission
emission part
field
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
JP55163362A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Takematsu
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.)
Fuji Koeki Corp
Original Assignee
Fuji Koeki Corp
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 Fuji Koeki Corp filed Critical Fuji Koeki Corp
Priority to JP55163362A priority Critical patent/JPS5788436A/en
Publication of JPS5788436A publication Critical patent/JPS5788436A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE:To operate a light emission part exactly, by detecting a brightness level of a field to be photographed, and displacing the light emission part to a prescribed position in case when the field to be photographed is darker than prescribed brightness. CONSTITUTION:On a responding circuit D, a 3-stage coupling circuit 30 is provided by a pnp transistor, and an output signal of a comparator 26 is supplied to this coupling circuit 30 through a shutter-button switch 31. As a result, when an on-output signal of L voltage of the comparator 26, which is generated in case when a field to be photographed is darker than a prescribed level has been inputted, the coupling circuit 30 conducts and an electric power source is supplied to an electromagnetic device 32. Also, a capacitor 33 provided on the responding circuit D is charged by a tertiary coil of an ocillation transformer 2 before the shutter-button switch 31 is closed, and becomes an electric power source of the electromagnetic device 32 when the coupling circuit 30 has conducted. The electromagnetic device 32 is provided with a permanent magnet and a forward energizing coil, and is constituted so that electromagnetic force of the permanent magnet is erased and the light emission part is projected when a reverse energizing coil is turned on.
JP55163362A 1980-11-21 1980-11-21 Built-in flash emitter of camera Pending JPS5788436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55163362A JPS5788436A (en) 1980-11-21 1980-11-21 Built-in flash emitter of camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55163362A JPS5788436A (en) 1980-11-21 1980-11-21 Built-in flash emitter of camera

Publications (1)

Publication Number Publication Date
JPS5788436A true JPS5788436A (en) 1982-06-02

Family

ID=15772431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55163362A Pending JPS5788436A (en) 1980-11-21 1980-11-21 Built-in flash emitter of camera

Country Status (1)

Country Link
JP (1) JPS5788436A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62121428A (en) * 1985-11-22 1987-06-02 Asahi Optical Co Ltd Single lens reflex camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62121428A (en) * 1985-11-22 1987-06-02 Asahi Optical Co Ltd Single lens reflex camera

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