CA944992A - Exposure control system - Google Patents

Exposure control system

Info

Publication number: CA944992A
Authority: CA; Canada
Prior art keywords: control system; exposure control; exposure; control
Prior art date: 1969-06-30
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

CA086,991A

Other languages

English (en)

Inventor

John P. Burgarella

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.)

Polaroid Corp

Original Assignee

Polaroid Corp

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.)

1969-06-30

Filing date

1970-06-30

Publication date

1974-04-09

1970-06-30 Application filed by Polaroid Corp filed Critical Polaroid Corp

1972-05-31 Priority to CA143598A priority Critical patent/CA925739A/en

1974-04-09 Application granted granted Critical

1974-04-09 Publication of CA944992A publication Critical patent/CA944992A/en

Status Expired 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/70—Exposure-making shutters; Diaphragms with flash-synchronising contacts
- 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
- G03B7/087—Analogue circuits for control of both exposure time and aperture

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Exposure Control For Cameras (AREA)

CA086,991A 1969-06-30 1970-06-30 Exposure control system Expired CA944992A (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA143598A CA925739A (en)	1969-06-30	1972-05-31	Exposure control system

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US83768869A	1969-06-30	1969-06-30

Publications (1)

Publication Number	Publication Date
CA944992A true CA944992A (en)	1974-04-09

Family

ID=25275137

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA086,991A Expired CA944992A (en)	1969-06-30	1970-06-30	Exposure control system

Country Status (7)

Country	Link
US (1)	US3641891A (de)
JP (1)	JPS5215973B1 (de)
CA (1)	CA944992A (de)
CH (1)	CH549816A (de)
DE (2)	DE2065948A1 (de)
FR (1)	FR2051440A5 (de)
GB (1)	GB1313346A (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3626825A (en) *	1970-05-28	1971-12-14	Texas Instruments Inc	Radiation-sensitive camera shutter and aperture control systems
US3849786A (en) *	1971-12-10	1974-11-19	Minolta Camera Kk	Light integrating type light detector circuit with photovoltaic cell
CA998865A (en) *	1972-04-24	1976-10-26	Polaroid Corporation	Photographic control system for flash and ambient light modes
US4190343A (en) *	1972-08-31	1980-02-26	Agfa-Gevaert Ag	Photographic camera with exposure control utilizing a phase controllable crystal
JPS5312608Y2 (de) *	1972-08-31	1978-04-05
US3987470A (en) *	1972-10-11	1976-10-19	Berkey Photo, Inc.	Iris control
US3809992A (en) *	1972-11-13	1974-05-07	Mamiya Camera	Circuit for storing a representation of an incident light quantity in a camera
USRE29927E (en) *	1972-11-16	1979-03-06	Yashica Co., Ltd.	Shutter operating circuits for photographic cameras
JPS5344988Y2 (de) *	1973-02-24	1978-10-27
DE2463382C2 (de) *	1973-07-16	1986-09-04	Canon K.K., Tokio/Tokyo	Elektronische Belichtungssteuereinrichtung
CA1013987A (en) *	1973-07-26	1977-07-19	Konishiroku Photo Industry Co.	Electric shutter circuit for camera shutter speed control
JPS563564B2 (de) *	1973-09-06	1981-01-26
US3842423A (en) *	1973-10-17	1974-10-15	Eastman Kodak Co	Exposure control apparatus
US3906516A (en) *	1974-11-25	1975-09-16	Eastman Kodak Co	Method and apparatus for controlling exposure in artificial illumination
US3977014A (en) *	1975-03-03	1976-08-24	Polaroid Corporation	Follow focus exposure control system with improved uniform trim control
US4017873A (en) *	1975-10-03	1977-04-12	Polaroid Corporation	Exposure control system with braking capability
JPS5489730A (en) *	1977-12-27	1979-07-17	Minolta Camera Co Ltd	Lens convertible camera of ttl photo-metric system with program shutter
US4241280A (en) *	1979-06-25	1980-12-23	Polaroid Corporation	Light integrator circuit with built-in anticipation
US4390258A (en) *	1980-12-15	1983-06-28	Olympus Optical Co. Ltd.	Photomeric circuit for camera
US4666301A (en) *	1985-05-08	1987-05-19	E. I. Du Pont De Nemours And Company	Radiation responsive integrating amplifier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3053985A (en) *	1959-08-03	1962-09-11	Eastman Kodak Co	Photocell circuits
US3292516A (en) *	1963-05-17	1966-12-20	Copal Co Ltd	Photographic camera with automatic exposure control
US3299789A (en) *	1964-06-05	1967-01-24	Eastman Kodak Co	Automatic exposure control system
US3397629A (en) *	1964-06-20	1968-08-20	Citizen Watch Co Ltd	Photographic light control means
DE1231546B (de) *	1964-08-27	1966-12-29	Agfa Gevaert Ag	Fotografische Kamera mit einer Belichtungssteuereinrichtung
US3362309A (en) *	1965-03-08	1968-01-09	Polaroid Corp	Exposure control apparatus
US3416421A (en) *	1965-05-06	1968-12-17	Agfa Gevaert Ag	Exposure control for photographic cameras
US3464332A (en) *	1966-05-12	1969-09-02	Polaroid Corp	Automatic exposure control system
US3482497A (en) *	1967-03-15	1969-12-09	Eastman Kodak Co	Automatic exposure control for cameras

1969
- 1969-06-30 US US837688A patent/US3641891A/en not_active Expired - Lifetime
1970
- 1970-06-29 FR FR7024035A patent/FR2051440A5/fr not_active Expired
- 1970-06-29 DE DE2065948A patent/DE2065948A1/de active Pending
- 1970-06-29 GB GB3140770A patent/GB1313346A/en not_active Expired
- 1970-06-29 DE DE2031978A patent/DE2031978C3/de not_active Expired
- 1970-06-30 CH CH989170A patent/CH549816A/de not_active IP Right Cessation
- 1970-06-30 JP JP45056597A patent/JPS5215973B1/ja active Pending
- 1970-06-30 CA CA086,991A patent/CA944992A/en not_active Expired

Also Published As

Publication number	Publication date
DE2031978A1 (de)	1971-01-28
DE2031978B2 (de)	1978-01-05
FR2051440A5 (de)	1971-04-02
DE2065948A1 (de)	1977-06-23
JPS5215973B1 (de)	1977-05-06
US3641891A (en)	1972-02-15
DE2031978C3 (de)	1978-09-07
GB1313346A (en)	1973-04-11
CH549816A (de)	1974-05-31

Publication	Publication Date	Title
CA939786A (en)	1974-01-08	Brake control system
CA944992A (en)	1974-04-09	Exposure control system
CA971795A (en)	1975-07-29	Exposure control system
CA925993A (en)	1973-05-08	Control system
CA920208A (en)	1973-01-30	Exposure system
CA925597A (en)	1973-05-01	Total-regulation control system
ZA708512B (en)	1971-09-29	Stage control system
CA938466A (en)	1973-12-18	Control system
CA919737A (en)	1973-01-23	Brake control system
AU1338670A (en)	1971-10-07	Brake control system
AU457578B2 (en)	1971-12-09	Exposure control system
CA925739A (en)	1973-05-08	Exposure control system
CA967663A (en)	1975-05-13	Control system
AU1580070A (en)	1971-12-09	Exposure control system
CA906688A (en)	1972-08-01	Reactor control system
CA809043A (en)	1969-03-25	Linecasting control system
CA828548A (en)	1969-12-02	Dust-fume control system
CA809044A (en)	1969-03-25	Linecasting control system
CA815668A (en)	1969-06-17	Control system
CA955317A (en)	1974-09-24	Control system
CA920675A (en)	1973-02-06	Control system
CA809042A (en)	1969-03-25	Linecasting control system
CA807374A (en)	1969-03-04	Control system
CA817718A (en)	1969-07-15	Control system
CA821717A (en)	1969-08-26	Control system