JPS57157229A - Electronic flash device - Google Patents

Electronic flash device

Info

Publication number
JPS57157229A
JPS57157229A JP56040503A JP4050381A JPS57157229A JP S57157229 A JPS57157229 A JP S57157229A JP 56040503 A JP56040503 A JP 56040503A JP 4050381 A JP4050381 A JP 4050381A JP S57157229 A JPS57157229 A JP S57157229A
Authority
JP
Japan
Prior art keywords
flash device
camera
electronic flash
feed
feeding
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.)
Granted
Application number
JP56040503A
Other languages
Japanese (ja)
Other versions
JPH0612390B2 (en
Inventor
Osamu Yoneda
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.)
Nikon Corp
Original Assignee
Nikon Corp
Nippon Kogaku KK
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 Nikon Corp, Nippon Kogaku KK filed Critical Nikon Corp
Priority to JP56040503A priority Critical patent/JPH0612390B2/en
Priority to GB8208499A priority patent/GB2098343B/en
Priority to DE3210651A priority patent/DE3210651C2/en
Publication of JPS57157229A publication Critical patent/JPS57157229A/en
Priority to US06/501,545 priority patent/US4436396A/en
Publication of JPH0612390B2 publication Critical patent/JPH0612390B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera
    • 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

Landscapes

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

Abstract

PURPOSE:To feed an electronic flash device properly with automatic feeding, by controlling the feeding of the flash device in accordance with the feed detection of a camera. CONSTITUTION:When the power switch of an electronic flash device is switched to the camera interlocking mode and the camera selects the electric control mode, a power switch SW12 of the electronic flash device is connected to a contact (f), and a main capacitor C16 is charged during the time of a time constant due to a capacitor C17 and a resistance R31, and feeding is broken by turning- off of transistors TRs Q33 and Q34. Under this state, when the feeding of the camera is detected to turn on a feed TRQ1, the electronic flash device is fed from a constant current source 6 through terminals T2 and T2' properly automatically as long as the camera is fed. Consequently, the failure of flash photography due to the erroneous operation of a feed switch, wasteful power consumption after the completion of photography, etc. are prevented.
JP56040503A 1981-03-23 1981-03-23 Electronic flash device Expired - Lifetime JPH0612390B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56040503A JPH0612390B2 (en) 1981-03-23 1981-03-23 Electronic flash device
GB8208499A GB2098343B (en) 1981-03-23 1982-03-23 An electroflash unit
DE3210651A DE3210651C2 (en) 1981-03-23 1982-03-23 Electronic flash unit for attaching to a camera
US06/501,545 US4436396A (en) 1981-03-23 1983-06-08 Electroflash unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56040503A JPH0612390B2 (en) 1981-03-23 1981-03-23 Electronic flash device

Publications (2)

Publication Number Publication Date
JPS57157229A true JPS57157229A (en) 1982-09-28
JPH0612390B2 JPH0612390B2 (en) 1994-02-16

Family

ID=12582351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56040503A Expired - Lifetime JPH0612390B2 (en) 1981-03-23 1981-03-23 Electronic flash device

Country Status (1)

Country Link
JP (1) JPH0612390B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63155041A (en) * 1986-12-19 1988-06-28 Asahi Optical Co Ltd Power supply circuit for flash device
WO1998033957A1 (en) * 1997-02-04 1998-08-06 Avon Products, Inc. Electroformed hollow jewelry

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63155041A (en) * 1986-12-19 1988-06-28 Asahi Optical Co Ltd Power supply circuit for flash device
WO1998033957A1 (en) * 1997-02-04 1998-08-06 Avon Products, Inc. Electroformed hollow jewelry

Also Published As

Publication number Publication date
JPH0612390B2 (en) 1994-02-16

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