JPS5511289A - Exposure value display device - Google Patents

Exposure value display device

Info

Publication number
JPS5511289A
JPS5511289A JP8516479A JP8516479A JPS5511289A JP S5511289 A JPS5511289 A JP S5511289A JP 8516479 A JP8516479 A JP 8516479A JP 8516479 A JP8516479 A JP 8516479A JP S5511289 A JPS5511289 A JP S5511289A
Authority
JP
Japan
Prior art keywords
completion
flash
flash device
aperture value
specified aperture
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
JP8516479A
Other languages
Japanese (ja)
Inventor
Yukio Iura
Masayoshi Yamamichi
Takashi Uchiyama
Tetsuya Taguchi
Yukio Mashita
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP8516479A priority Critical patent/JPS5511289A/en
Publication of JPS5511289A publication Critical patent/JPS5511289A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stroboscope Apparatuses (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE: To enable confirmation of specified aperture value and completion of preparation for flash photographing, by providing a meter to indicate the specified aperture value set in a dimmer type flash device, and driving the meter at the end of charging of condenser and completion of preparation for emission.
CONSTITUTION: A switching transistor TR1 is connected in series between specified aperture information signal transmitting terminals e1 and f1 of a dimmer type flash device. When a selector switch S3 is set to one of positions A1 to A3, an aperture plate provided in front of the photo detector to detect the light reflected from the object built in the flash device displaces in cooperation. The base of transistor Tr1 is connected to a condenser C2, which is charged by a high voltage power source V of the flash device, through a neon tube Ne to detect the flash ready state. A meter M to indicate the specified aperture value set in the flash device is provided on the camera side, and is designed to be driven at the completion of charging of the condenser C2. Therefore, an exposure display device enabling confirmation of both specified aperture value and completion of preparation for flash may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP8516479A 1979-07-05 1979-07-05 Exposure value display device Pending JPS5511289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8516479A JPS5511289A (en) 1979-07-05 1979-07-05 Exposure value display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8516479A JPS5511289A (en) 1979-07-05 1979-07-05 Exposure value display device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49036794A Division JPS50129224A (en) 1974-04-01 1974-04-01

Publications (1)

Publication Number Publication Date
JPS5511289A true JPS5511289A (en) 1980-01-26

Family

ID=13851012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8516479A Pending JPS5511289A (en) 1979-07-05 1979-07-05 Exposure value display device

Country Status (1)

Country Link
JP (1) JPS5511289A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907059A1 (en) * 1968-02-13 1969-10-02 Lumina Sprl Device for controlling capacitor discharge pulses
US3710701A (en) * 1970-12-21 1973-01-16 Canon Kk Flash device for a camera and a photographing system with an artificial illuminator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907059A1 (en) * 1968-02-13 1969-10-02 Lumina Sprl Device for controlling capacitor discharge pulses
US3710701A (en) * 1970-12-21 1973-01-16 Canon Kk Flash device for a camera and a photographing system with an artificial illuminator

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