JPS5689728A - Electronic control flash device - Google Patents

Electronic control flash device

Info

Publication number
JPS5689728A
JPS5689728A JP16882479A JP16882479A JPS5689728A JP S5689728 A JPS5689728 A JP S5689728A JP 16882479 A JP16882479 A JP 16882479A JP 16882479 A JP16882479 A JP 16882479A JP S5689728 A JPS5689728 A JP S5689728A
Authority
JP
Japan
Prior art keywords
light emission
circuit
light
information
basis
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
JP16882479A
Other languages
Japanese (ja)
Other versions
JPH0448373B2 (en
Inventor
Kunio Kawamura
Togo Teramoto
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 JP16882479A priority Critical patent/JPS5689728A/en
Publication of JPS5689728A publication Critical patent/JPS5689728A/en
Publication of JPH0448373B2 publication Critical patent/JPH0448373B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE: To make it possible to expose the object properly, by setting the light quantity of the flash discharge tube on the basis of information from the object, which is obtained by stand-by illumination, and information from the range finder.
CONSTITUTION: When switch 10 is switched to the (a) side, flash discharge tube 1 projects a prescribed light emission quantity to object 5 by stand-by light emission driving circuit 2. Next, the reflection light of object 5 is measured by reflection light quantity measuring circuit 3 and is applied to light emission correction quantity operating circuit 8. Operating circuit 8 operates a light emission correction quantity on a basis of this reflection light and information of the distance to object 5 given from range finder 7 and applies this quantity to light emission quantity adjustment setting circuit 9. Next, setting circuit 9 adjusts and sets the light emission quantity on the basis of input information. Next, when switch 10 is switched to the (b) side, discharge tube 1 flashes with the light emission quantity adjusted and set by the setting circuit, and thus object 5 is exposed properly.
COPYRIGHT: (C)1981,JPO&Japio
JP16882479A 1979-12-24 1979-12-24 Electronic control flash device Granted JPS5689728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16882479A JPS5689728A (en) 1979-12-24 1979-12-24 Electronic control flash device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16882479A JPS5689728A (en) 1979-12-24 1979-12-24 Electronic control flash device

Publications (2)

Publication Number Publication Date
JPS5689728A true JPS5689728A (en) 1981-07-21
JPH0448373B2 JPH0448373B2 (en) 1992-08-06

Family

ID=15875187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16882479A Granted JPS5689728A (en) 1979-12-24 1979-12-24 Electronic control flash device

Country Status (1)

Country Link
JP (1) JPS5689728A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023647A (en) * 1986-01-21 1991-06-11 Canon Kabushiki Kaisha Automatic status discriminator
US5371568A (en) * 1990-06-26 1994-12-06 Nikon Corporation Automatic flash limiting apparatus in a camera
JP2009169055A (en) * 2008-01-16 2009-07-30 Panasonic Corp Imaging apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4887829A (en) * 1972-02-19 1973-11-17
JPS4953033A (en) * 1972-09-21 1974-05-23
JPS5173437A (en) * 1974-12-21 1976-06-25 Asahi Optical Co Ltd Senkohatsukokini okeru shuhasusentakugatachokosochi

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4887829A (en) * 1972-02-19 1973-11-17
JPS4953033A (en) * 1972-09-21 1974-05-23
JPS5173437A (en) * 1974-12-21 1976-06-25 Asahi Optical Co Ltd Senkohatsukokini okeru shuhasusentakugatachokosochi

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023647A (en) * 1986-01-21 1991-06-11 Canon Kabushiki Kaisha Automatic status discriminator
US5371568A (en) * 1990-06-26 1994-12-06 Nikon Corporation Automatic flash limiting apparatus in a camera
JP2009169055A (en) * 2008-01-16 2009-07-30 Panasonic Corp Imaging apparatus

Also Published As

Publication number Publication date
JPH0448373B2 (en) 1992-08-06

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