DE3332281C2 - - Google Patents

Info

Publication number
DE3332281C2
DE3332281C2 DE3332281A DE3332281A DE3332281C2 DE 3332281 C2 DE3332281 C2 DE 3332281C2 DE 3332281 A DE3332281 A DE 3332281A DE 3332281 A DE3332281 A DE 3332281A DE 3332281 C2 DE3332281 C2 DE 3332281C2
Authority
DE
Germany
Prior art keywords
transistor
light
photosensitive element
measuring device
photosensitive
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 - Lifetime
Application number
DE3332281A
Other languages
German (de)
English (en)
Other versions
DE3332281A1 (de
Inventor
Masanori Machida Tokio/Tokyo Jp Uchidoi
Nobuyuki Kawasaki Kanagawa Jp Suzuki
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
Publication of DE3332281A1 publication Critical patent/DE3332281A1/de
Application granted granted Critical
Publication of DE3332281C2 publication Critical patent/DE3332281C2/de
Granted 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
DE19833332281 1982-09-08 1983-09-07 Lichtmesseinrichtung Granted DE3332281A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57157161A JPS5946521A (ja) 1982-09-08 1982-09-08 測光回路

Publications (2)

Publication Number Publication Date
DE3332281A1 DE3332281A1 (de) 1984-03-08
DE3332281C2 true DE3332281C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-03-04

Family

ID=15643513

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833332281 Granted DE3332281A1 (de) 1982-09-08 1983-09-07 Lichtmesseinrichtung

Country Status (3)

Country Link
US (1) US4681441A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5946521A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3332281A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844245A1 (de) * 1987-12-29 1989-07-13 Seikosha Kk Messschaltung zur erfassung von hintergrundlicht

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701048A (en) * 1983-02-23 1987-10-20 Canon Kabushiki Kaisha Input circuit for distance measuring apparatus
US5264889A (en) * 1990-04-17 1993-11-23 Minolta Camera Kabushiki Kaisha Apparatus having an automatic focus detecting device
US6055057A (en) * 1998-12-22 2000-04-25 Eastman Kodak Company Method and apparatus for accurately sensing a light beam as it passes a defined point
US6208370B1 (en) 1998-12-22 2001-03-27 Eastman Kodak Company Method and apparatus for determining the starting position and the power of a scanning light beam to be used in writing on a media
JP2003124757A (ja) * 2001-10-16 2003-04-25 Texas Instr Japan Ltd アーリー効果の影響を低減する方法および装置
JP4815282B2 (ja) * 2006-06-27 2011-11-16 シリンクス株式会社 光電変換装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2159036C3 (de) * 1970-11-30 1974-04-25 Nippon Kogaku K.K., Tokio Belichtungssteueranordnung mit einer Fotodiode
US3700319A (en) * 1971-01-12 1972-10-24 Optisonics Corp Control circuit for single frame film advance audio projector
JPS5115736B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1971-02-22 1976-05-19
US3877039A (en) * 1971-11-24 1975-04-08 Matsushita Electric Ind Co Ltd Exposure control system for cameras
DE2238522C3 (de) * 1972-08-04 1978-11-30 Gerhard 8200 Rosenheim Krause Belichtungsautomatik für Kameras
JPS4991216A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-12-29 1974-08-31
JPS506331A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-05-15 1975-01-23
JPS527870Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-07-11 1977-02-18
DE2558155C3 (de) * 1974-12-28 1978-10-19 Canon K.K., Tokio Lkhtmeßschaltung
JPS5443727A (en) * 1977-09-13 1979-04-06 Minolta Camera Co Ltd Exposure control device for camera
JPS54161983A (en) * 1978-06-12 1979-12-22 Canon Inc Temperature compensating circuit of photometric circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844245A1 (de) * 1987-12-29 1989-07-13 Seikosha Kk Messschaltung zur erfassung von hintergrundlicht

Also Published As

Publication number Publication date
DE3332281A1 (de) 1984-03-08
JPH0553371B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-08-09
JPS5946521A (ja) 1984-03-15
US4681441A (en) 1987-07-21

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition