JPS5419740A - Camera exposure controller with optical shutter speed restricting mechanism - Google Patents

Camera exposure controller with optical shutter speed restricting mechanism

Info

Publication number
JPS5419740A
JPS5419740A JP8441177A JP8441177A JPS5419740A JP S5419740 A JPS5419740 A JP S5419740A JP 8441177 A JP8441177 A JP 8441177A JP 8441177 A JP8441177 A JP 8441177A JP S5419740 A JPS5419740 A JP S5419740A
Authority
JP
Japan
Prior art keywords
shutter speed
optical shutter
restricting mechanism
camera exposure
exposure controller
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
JP8441177A
Other languages
Japanese (ja)
Inventor
Tokuichi Tsunekawa
Tetsuya Taguchi
Isao Harigaya
Fumio Ito
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 JP8441177A priority Critical patent/JPS5419740A/en
Priority to US05/917,375 priority patent/US4176929A/en
Publication of JPS5419740A publication Critical patent/JPS5419740A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To restrict the shutter second without deteriorating a photosensitive material by introducing a proper quanity oft bias light during photography into such a light receiving element of a system for photometry of the light feflected from the film surface as is operative to indicate in advance the exposure time second before the photography.
COPYRIGHT: (C)1979,JPO&Japio
JP8441177A 1977-06-21 1977-07-14 Camera exposure controller with optical shutter speed restricting mechanism Pending JPS5419740A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8441177A JPS5419740A (en) 1977-07-14 1977-07-14 Camera exposure controller with optical shutter speed restricting mechanism
US05/917,375 US4176929A (en) 1977-06-21 1978-06-20 Exposure control device for a camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8441177A JPS5419740A (en) 1977-07-14 1977-07-14 Camera exposure controller with optical shutter speed restricting mechanism

Publications (1)

Publication Number Publication Date
JPS5419740A true JPS5419740A (en) 1979-02-14

Family

ID=13829838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8441177A Pending JPS5419740A (en) 1977-06-21 1977-07-14 Camera exposure controller with optical shutter speed restricting mechanism

Country Status (1)

Country Link
JP (1) JPS5419740A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58105499A (en) * 1981-12-17 1983-06-23 Mitsubishi Electric Corp Memory protecting device of microcomputer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58105499A (en) * 1981-12-17 1983-06-23 Mitsubishi Electric Corp Memory protecting device of microcomputer
JPS6130304B2 (en) * 1981-12-17 1986-07-12 Mitsubishi Electric Corp

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