DE2428938C2 - Digitaler Belichtungsmesser für die Photographie - Google Patents

Digitaler Belichtungsmesser für die Photographie

Info

Publication number
DE2428938C2
DE2428938C2 DE2428938A DE2428938A DE2428938C2 DE 2428938 C2 DE2428938 C2 DE 2428938C2 DE 2428938 A DE2428938 A DE 2428938A DE 2428938 A DE2428938 A DE 2428938A DE 2428938 C2 DE2428938 C2 DE 2428938C2
Authority
DE
Germany
Prior art keywords
signal
digital
exposure
analog
information
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.)
Expired
Application number
DE2428938A
Other languages
German (de)
English (en)
Other versions
DE2428938A1 (de
Inventor
Toru Toyokawa Kisanuki
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
Publication of DE2428938A1 publication Critical patent/DE2428938A1/de
Application granted granted Critical
Publication of DE2428938C2 publication Critical patent/DE2428938C2/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J1/46—Electric circuits using a capacitor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
DE2428938A 1973-06-18 1974-06-15 Digitaler Belichtungsmesser für die Photographie Expired DE2428938C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6902573A JPS5434552B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-06-18 1973-06-18

Publications (2)

Publication Number Publication Date
DE2428938A1 DE2428938A1 (de) 1975-01-09
DE2428938C2 true DE2428938C2 (de) 1985-02-28

Family

ID=13390620

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2428938A Expired DE2428938C2 (de) 1973-06-18 1974-06-15 Digitaler Belichtungsmesser für die Photographie
DE2463098A Expired DE2463098C2 (de) 1973-06-18 1974-06-15 Digitaler Belichtungsmesser für die Photographie

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE2463098A Expired DE2463098C2 (de) 1973-06-18 1974-06-15 Digitaler Belichtungsmesser für die Photographie

Country Status (3)

Country Link
US (1) US3909137A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5434552B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE2428938C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833537B2 (ja) * 1973-01-29 1983-07-20 株式会社リコー 一眼レフレツクスカメラの測光情報表示装置
US4047189A (en) * 1973-02-05 1977-09-06 Ernst Leitz Gmbh Electronic storage, indicator and exposure time control device for photographic cameras
US4054887A (en) * 1973-04-16 1977-10-18 Ernest Leitz Gmbh Exposure control device for photographic cameras
US4032933A (en) * 1974-03-04 1977-06-28 Canon Kabushiki Kaisha Indication system of a camera
JPS5111853U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-07-12 1976-01-28
US4092652A (en) * 1974-07-27 1978-05-30 Canon Kabushiki Kaisha Exposure information indicating device for a camera
US4149795A (en) * 1974-08-07 1979-04-17 Canon Kabushiki Kaisha Digital information transmitting and displaying system for a photographic camera
US4001846A (en) * 1974-08-09 1977-01-04 Kauneckas John J Recording system for photographic cameras
JPS5127053A (en) * 1974-08-30 1976-03-06 Canon Kk Tanyuryokuyo aad henkansochi
US4162839A (en) * 1974-08-30 1979-07-31 Canon Kabushiki Kaisha Dual preference camera for digitally displaying preset and computered valves
JPS5128727A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-09-04 1976-03-11 Canon Kk
JPS5132098B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-09-18 1976-09-10
JPS5141522A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-10-04 1976-04-07 Canon Kk
US4137541A (en) * 1974-10-07 1979-01-30 Canon Kabushiki Kaisha Automatic exposure control apparatus for a single lens reflex camera
JPS5145530A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-10-17 1976-04-19 Canon Kk
JPS5160240U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-11-05 1976-05-12
JPS557931Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-11-22 1980-02-21
US4028712A (en) * 1974-11-27 1977-06-07 Kanon Kabushiki Kaisha Display system for photographic camera
JPS5225627A (en) * 1975-08-20 1977-02-25 West Electric Co Ltd Exposure means
US4191458A (en) * 1975-09-11 1980-03-04 Canon Kabushiki Kaisha Photographic information setting display circuit
JPS5275435A (en) * 1975-12-19 1977-06-24 West Electric Co Digital exposure meter
JPS6014331B2 (ja) * 1976-03-05 1985-04-12 日本電気株式会社 電子シヤツタ−カメラにおけるデイジタル的デ−タ処理回路
DE2613154C2 (de) * 1976-03-27 1982-04-08 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum digitalen Anzeigen fotografischer Daten
JPS54106282A (en) * 1978-02-07 1979-08-21 Minolta Camera Co Ltd Photometric method and apparatus
JPS54112629A (en) * 1978-02-22 1979-09-03 Minolta Camera Co Ltd Exposure control value display device
JPS54151444A (en) * 1978-05-20 1979-11-28 Nippon Chemical Ind Power supply control circuit for camera
DE2829656A1 (de) * 1978-07-06 1980-01-17 Rollei Werke Franke Heidecke Schaltungsanordnung zur belichtungszeitmessung und/oder belichtungszeitsteuerung fuer eine fotografische kamera
US4433914A (en) 1979-09-14 1984-02-28 Vivitar Corporation Exposure meter
US4356393A (en) * 1980-05-29 1982-10-26 Banner Engineering Corp. Alignment indicator for photoelectric scanners
DE3111417A1 (de) * 1981-03-24 1982-10-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Bestrahlungsmesser
JPS6025552Y2 (ja) * 1981-10-29 1985-07-31 ウエスト電気株式会社 ディジタル露出計
US4498140A (en) * 1982-06-02 1985-02-05 Chesley F. Carlson Automated self calibrating exposure computer
JPS5886532A (ja) * 1982-11-08 1983-05-24 Canon Inc カメラ
US4491504A (en) * 1983-01-27 1985-01-01 The Bauer Bros. Co. Apparatus for treating cellulosic material with a screw feeder extending internally within a treatment vessel
JPS60227137A (ja) * 1985-02-18 1985-11-12 Minolta Camera Co Ltd フラツシユ光測定用露出計
JPS60220830A (ja) * 1985-02-18 1985-11-05 Minolta Camera Co Ltd 露出計
JPS62187000U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1986-05-16 1987-11-27
CA2127076A1 (en) * 1993-07-01 1995-01-02 Soon-Gil Seo Brightness measuring device for a camera and related control method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761968A (en) * 1953-01-09 1956-09-04 Milton L Kuder Electronic analogue-to-digital converters
DE1797596C3 (de) * 1966-04-29 1978-12-07 Minolta Camera K.K., Osaka (Japan) Schaltungsanordnung zur Steuerung der Belichtungszeit bei einer einäugigen Spiegelreflexkamera
US3709615A (en) * 1969-02-28 1973-01-09 Calumet Photographic Inc Integrating light meter with movable meter mechanism
JPS5211223B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1970-04-06 1977-03-29
US3649128A (en) * 1970-11-27 1972-03-14 Stanley Rothschild System for determining the proper exposure for a photographic surface
JPS5442704Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-04-14 1979-12-11

Also Published As

Publication number Publication date
DE2463098C2 (de) 1986-10-02
DE2428938A1 (de) 1975-01-09
JPS5018081A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-02-26
JPS5434552B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1979-10-27
US3909137A (en) 1975-09-30

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