JPS56111841A - Exposure control system of camera using physical aperture - Google Patents

Exposure control system of camera using physical aperture

Info

Publication number
JPS56111841A
JPS56111841A JP1509080A JP1509080A JPS56111841A JP S56111841 A JPS56111841 A JP S56111841A JP 1509080 A JP1509080 A JP 1509080A JP 1509080 A JP1509080 A JP 1509080A JP S56111841 A JPS56111841 A JP S56111841A
Authority
JP
Japan
Prior art keywords
increase
output
gate
stop
physical 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
JP1509080A
Other languages
English (en)
Inventor
Ryoichi Suzuki
Takashi Uchiyama
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 JP1509080A priority Critical patent/JPS56111841A/ja
Priority to DE19813104195 priority patent/DE3104195A1/de
Publication of JPS56111841A publication Critical patent/JPS56111841A/ja
Priority to US06/386,766 priority patent/US4415248A/en
Pending 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
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/085—Analogue circuits for control of aperture
    • 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
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits
    • G03B7/095—Digital circuits for control of aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutters For Cameras (AREA)
  • Exposure Control For Cameras (AREA)
JP1509080A 1980-02-08 1980-02-08 Exposure control system of camera using physical aperture Pending JPS56111841A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1509080A JPS56111841A (en) 1980-02-08 1980-02-08 Exposure control system of camera using physical aperture
DE19813104195 DE3104195A1 (de) 1980-02-08 1981-02-06 "belichtungssteuereinrichtung"
US06/386,766 US4415248A (en) 1980-02-08 1982-06-09 Exposure control apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1509080A JPS56111841A (en) 1980-02-08 1980-02-08 Exposure control system of camera using physical aperture

Publications (1)

Publication Number Publication Date
JPS56111841A true JPS56111841A (en) 1981-09-03

Family

ID=11879139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1509080A Pending JPS56111841A (en) 1980-02-08 1980-02-08 Exposure control system of camera using physical aperture

Country Status (3)

Country Link
US (1) US4415248A (ja)
JP (1) JPS56111841A (ja)
DE (1) DE3104195A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252524A (ja) * 1985-08-31 1987-03-07 Copal Co Ltd 電気光学シヤツタ

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5855916A (ja) * 1981-09-29 1983-04-02 Minolta Camera Co Ltd 絞り開口制御装置
US4657368A (en) * 1981-12-24 1987-04-14 Canon Kabushiki Kaisha Automatic exposure control device
JP2816708B2 (ja) * 1989-06-09 1998-10-27 旭光学工業株式会社 ズームカメラ
US5341190A (en) * 1989-06-09 1994-08-23 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens camera
JPH04124236U (ja) * 1991-04-25 1992-11-12 株式会社精工舎 閃光同調装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555987A (en) * 1968-02-07 1971-01-19 Iben Browning Focal plane shutter system
US4190343A (en) * 1972-08-31 1980-02-26 Agfa-Gevaert Ag Photographic camera with exposure control utilizing a phase controllable crystal
US4065777A (en) * 1974-09-13 1977-12-27 Olympus Optical Company, Ltd. Photometric apparatus for single lens reflex camera
JPS5132098B2 (ja) * 1974-09-18 1976-09-10
CH620524A5 (ja) * 1977-09-30 1980-11-28 Pignons Sa
DE2816861A1 (de) * 1978-04-18 1979-10-31 Agfa Gevaert Ag Blendenverschluss fuer eine fotografische kamera
DE2816851A1 (de) * 1978-04-18 1979-10-31 Agfa Gevaert Ag Fotografische kamera mit einer blendenanordnung aus ferroelektrischem material oder aus fluessigkristall

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252524A (ja) * 1985-08-31 1987-03-07 Copal Co Ltd 電気光学シヤツタ

Also Published As

Publication number Publication date
DE3104195A1 (de) 1981-11-19
US4415248A (en) 1983-11-15

Similar Documents

Publication Publication Date Title
JPS5710583A (en) Automatic diaphragm control method of solidstate image pickup device
JPS56111841A (en) Exposure control system of camera using physical aperture
JPS54151445A (en) Camera
JPS5383739A (en) Strobo flash control system for focal plane shutter camera of electric type
JPS5779922A (en) Automatic focusing camera
JPS5289938A (en) Single lens reflex camera using pentaprism
JPS5540422A (en) Exposure information generating circuit of single-lens reflex camera
JPS5346726A (en) Exposure controller of cameras
JPS56116019A (en) Correction system for aperture control of single-lens reflex camera providing interchange of lens and interchangeable lens used for its system
JPS5455429A (en) Automatic exposure control device for camera with blur detecting circuit
JPS54145527A (en) Exposure correcting method in close-up photography of camera
JPS51122431A (en) Flash camera device
JPS548523A (en) Exposure controller of cameras
JPS56116020A (en) Correction system for aperture control of single-lens reflex camera providing interchange of lens and interchangeable lens used for its system
JPS55164820A (en) Alarm device of camera using materially electro* magneto optical diaphragm device
JPS55106434A (en) Exposure adjusting device
GB2015758A (en) Camera exposure control
JPS5325432A (en) L ight measure circuit for camera
JPS56159628A (en) Single-lens reflex camera equipped with photographic sequence control circuit
JPS5441131A (en) Photometry device for single lens reflex camera
JPS56147134A (en) Photometric compensation device of single-lens reflex camera
JPS5730914A (en) Photometer for photographing using auxiliary light
JPS54100724A (en) Program shutter circuit for camera having interchangeable lenses
JPS5346724A (en) Exposure controller of cameras
JPS5419740A (en) Camera exposure controller with optical shutter speed restricting mechanism