JPS5564224A - Power source circuit of automatic focusing camera - Google Patents

Power source circuit of automatic focusing camera

Info

Publication number
JPS5564224A
JPS5564224A JP13701778A JP13701778A JPS5564224A JP S5564224 A JPS5564224 A JP S5564224A JP 13701778 A JP13701778 A JP 13701778A JP 13701778 A JP13701778 A JP 13701778A JP S5564224 A JPS5564224 A JP S5564224A
Authority
JP
Japan
Prior art keywords
circuit
automatic focusing
distance measurement
signal
supply
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
JP13701778A
Other languages
Japanese (ja)
Inventor
Kenji Fukuoka
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP13701778A priority Critical patent/JPS5564224A/en
Publication of JPS5564224A publication Critical patent/JPS5564224A/en
Pending legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Stroboscope Apparatuses (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)

Abstract

PURPOSE: To make possible stable operation of the automatic focusing device by temporarily stopping the charging operation of a strobe device during automatic focusing operation.
CONSTITUTION: When a release button 21 is pushed at the time when charging of a main capacitor 14 is completed, a control signal circuit 20 operates to supply a transmission stop signal to a boosting oscillation circuit 12 and at the same time, supply a distance measurement command signal to a distance measurement circuit 13. As a result, the power supply from a power source 11 to a strobe device is stopped and a distance measurement driving circuit 16 operates in response to the output signal of the distance measurement circuit 13, whereby focus is matched automatically. At the time when the focus is matched, a shutter circuit 17 is operated and a trigger circuit 18 supplies a trigger signal to a flash discharge tube circuit 15, thereby causing a flash discharge tube to emit light. When photographing is completed, a control signal circuit 20 is reset and power is supplied to the boosting oscillation circuit 12 which then resumes oscillation. In this way, stable and sure automatic focusing may be accomplished.
COPYRIGHT: (C)1980,JPO&Japio
JP13701778A 1978-11-07 1978-11-07 Power source circuit of automatic focusing camera Pending JPS5564224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13701778A JPS5564224A (en) 1978-11-07 1978-11-07 Power source circuit of automatic focusing camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13701778A JPS5564224A (en) 1978-11-07 1978-11-07 Power source circuit of automatic focusing camera

Publications (1)

Publication Number Publication Date
JPS5564224A true JPS5564224A (en) 1980-05-14

Family

ID=15188871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13701778A Pending JPS5564224A (en) 1978-11-07 1978-11-07 Power source circuit of automatic focusing camera

Country Status (1)

Country Link
JP (1) JPS5564224A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60225124A (en) * 1984-04-20 1985-11-09 Nitto Kogaku Kk Flash discharge light emission device
JPS62220940A (en) * 1986-03-20 1987-09-29 Nippon Kogaku Kk <Nikon> Electronic flash device with auxiliary lighting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60225124A (en) * 1984-04-20 1985-11-09 Nitto Kogaku Kk Flash discharge light emission device
JPS62220940A (en) * 1986-03-20 1987-09-29 Nippon Kogaku Kk <Nikon> Electronic flash device with auxiliary lighting device

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