JPH0522895B2 - - Google Patents

Info

Publication number
JPH0522895B2
JPH0522895B2 JP56173471A JP17347181A JPH0522895B2 JP H0522895 B2 JPH0522895 B2 JP H0522895B2 JP 56173471 A JP56173471 A JP 56173471A JP 17347181 A JP17347181 A JP 17347181A JP H0522895 B2 JPH0522895 B2 JP H0522895B2
Authority
JP
Japan
Prior art keywords
flash
light
amount
circuit
gate
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.)
Expired - Lifetime
Application number
JP56173471A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5875132A (ja
Inventor
Kiwa Iida
Shingi Hagiuda
Hiroshi Hasegawa
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
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 Nippon Kogaku KK filed Critical Nippon Kogaku KK
Priority to JP56173471A priority Critical patent/JPS5875132A/ja
Priority to US06/424,336 priority patent/US4523830A/en
Publication of JPS5875132A publication Critical patent/JPS5875132A/ja
Publication of JPH0522895B2 publication Critical patent/JPH0522895B2/ja
Granted 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
JP56173471A 1981-10-29 1981-10-29 閃光装置の露光適否検出回路 Granted JPS5875132A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56173471A JPS5875132A (ja) 1981-10-29 1981-10-29 閃光装置の露光適否検出回路
US06/424,336 US4523830A (en) 1981-10-29 1982-09-27 Automatic control type electronic flash apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56173471A JPS5875132A (ja) 1981-10-29 1981-10-29 閃光装置の露光適否検出回路

Publications (2)

Publication Number Publication Date
JPS5875132A JPS5875132A (ja) 1983-05-06
JPH0522895B2 true JPH0522895B2 (en]) 1993-03-31

Family

ID=15961092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56173471A Granted JPS5875132A (ja) 1981-10-29 1981-10-29 閃光装置の露光適否検出回路

Country Status (2)

Country Link
US (1) US4523830A (en])
JP (1) JPS5875132A (en])

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6176714A (ja) * 1984-09-20 1986-04-19 Mitsubishi Electric Corp 内燃機関用排気消音装置
US4998127A (en) * 1989-07-31 1991-03-05 Eastman Kodak Company Camera with flash return sensing
US5148212A (en) * 1990-01-23 1992-09-15 Ricoh Company, Ltd. Flash control based on calculated required flash energy
JPH0496722U (en]) * 1991-01-29 1992-08-21
TW562986B (en) * 2003-05-20 2003-11-21 Kinpo Elect Inc Flashlight control device and the operating method thereof
US7603031B1 (en) 2004-12-15 2009-10-13 Canfield Scientific, Incorporated Programmable, multi-spectral, image-capture environment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626827A (en) * 1967-10-26 1971-12-14 Minolta Camera Kk Automatic exposure adjustment device for flash photography
JPS49117839U (en]) * 1973-02-02 1974-10-08
JPS5161826A (ja) * 1974-11-26 1976-05-28 Stanley Electric Co Ltd Sutorobokoryochoseihoho oyobi choseisochi
JPS51117624A (en) * 1975-04-08 1976-10-15 Canon Inc Flashlight unit warning circuit
US4122465A (en) * 1976-06-23 1978-10-24 Nippon Kogaku K.K. Device for indicating condition of exposure in an automatic control type electronic flash unit for flash photography
US4258991A (en) * 1979-02-09 1981-03-31 Toshiba Photo Products Co., Ltd. Electronic flash apparatus for a camera
JPS5652740A (en) * 1979-10-08 1981-05-12 Nippon Kogaku Kk <Nikon> Camera having data imprinting device
US4331400A (en) * 1980-08-11 1982-05-25 Eastman Kodak Company Electronic strobe flash apparatus for automatic fill-in and full-flash

Also Published As

Publication number Publication date
US4523830A (en) 1985-06-18
JPS5875132A (ja) 1983-05-06

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