FR2290683A1 - Dispositif de regulation pour appareils photographiques - Google Patents

Dispositif de regulation pour appareils photographiques

Info

Publication number
FR2290683A1
FR2290683A1 FR7533543A FR7533543A FR2290683A1 FR 2290683 A1 FR2290683 A1 FR 2290683A1 FR 7533543 A FR7533543 A FR 7533543A FR 7533543 A FR7533543 A FR 7533543A FR 2290683 A1 FR2290683 A1 FR 2290683A1
Authority
FR
France
Prior art keywords
regulation device
photographic cameras
photographic
cameras
regulation
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.)
Withdrawn
Application number
FR7533543A
Other languages
English (en)
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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
Priority claimed from DE19742453285 external-priority patent/DE2453285C2/de
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of FR2290683A1 publication Critical patent/FR2290683A1/fr
Withdrawn legal-status Critical Current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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Diaphragms For Cameras (AREA)
  • Control Of Stepping Motors (AREA)
  • Shutters For Cameras (AREA)
FR7533543A 1974-11-09 1975-11-03 Dispositif de regulation pour appareils photographiques Withdrawn FR2290683A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742453285 DE2453285C2 (de) 1974-11-09 Regelvorrichtung für fotografische Geräte

Publications (1)

Publication Number Publication Date
FR2290683A1 true FR2290683A1 (fr) 1976-06-04

Family

ID=5930474

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7533543A Withdrawn FR2290683A1 (fr) 1974-11-09 1975-11-03 Dispositif de regulation pour appareils photographiques

Country Status (7)

Country Link
US (1) US4079391A (fr)
JP (1) JPS5328773B2 (fr)
AT (1) AT348335B (fr)
CH (1) CH598611A5 (fr)
FR (1) FR2290683A1 (fr)
GB (1) GB1532452A (fr)
HK (1) HK49879A (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2039240A1 (fr) * 1970-04-16 1971-01-15 Canon Kk
FR2065556A1 (fr) * 1970-10-27 1971-07-30 Canon Kk
DE2158928A1 (de) * 1970-12-15 1972-07-06 Hauser Raimund Schaltungsanordnung
DE2225699A1 (de) * 1971-05-28 1972-12-14 Canon Kk Elektrische Schaltung fur ein Servo system sowie eine solche Schaltung ver wendendes Servosystem

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430053A (en) * 1967-08-24 1969-02-25 Lawrence A Westhaver Method for aperture control in which the loop gain is caused to vanish when the absolute value of the error is less than a given value and is caused to assume its nominal value when the absolute value of the error is greater than a second given value
AT325944B (de) * 1972-03-25 1975-11-10 Agfa Gevaert Ag Photographische oder kinematographische kamera
US3882522A (en) * 1973-05-22 1975-05-06 Polaroid Corp Non-cocking springless shutter developing two parameter exposure regulation
FR2249357B1 (fr) * 1973-10-27 1981-05-22 Agfa Gevaert Ag
US3987462A (en) * 1974-10-26 1976-10-19 Agfa-Gevaert, A.G. Equipment for minimizing the power loss in a step motor in a camera
US3972607A (en) * 1974-12-30 1976-08-03 Agfa-Gevaert, A.G. Analog/digital control arrangement for photographic apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2039240A1 (fr) * 1970-04-16 1971-01-15 Canon Kk
FR2065556A1 (fr) * 1970-10-27 1971-07-30 Canon Kk
DE2158928A1 (de) * 1970-12-15 1972-07-06 Hauser Raimund Schaltungsanordnung
DE2225699A1 (de) * 1971-05-28 1972-12-14 Canon Kk Elektrische Schaltung fur ein Servo system sowie eine solche Schaltung ver wendendes Servosystem

Also Published As

Publication number Publication date
JPS5328773B2 (fr) 1978-08-16
DE2453285B1 (de) 1976-04-08
JPS5172331A (fr) 1976-06-23
AT348335B (de) 1979-02-12
US4079391A (en) 1978-03-14
CH598611A5 (fr) 1978-05-12
ATA690175A (de) 1978-06-15
GB1532452A (en) 1978-11-15
HK49879A (en) 1979-07-27

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Legal Events

Date Code Title Description
ST Notification of lapse