CA933008A - Aperture defining exposure control system - Google Patents

Aperture defining exposure control system

Info

Publication number: CA933008A
Authority: CA; Canada
Prior art keywords: control system; exposure control; aperture defining; defining exposure; aperture
Prior art date: 1968-12-16
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

CA069905A

Other languages

English (en)

Inventor

M. Douglas Lawrence

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.)

1968-12-16

Filing date

1969-12-15

Publication date

1973-09-04

1969-12-15 Application filed by Polaroid Corp filed Critical Polaroid Corp

1973-09-04 Application granted granted Critical

1973-09-04 Publication of CA933008A publication Critical patent/CA933008A/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
- 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)
Diaphragms For Cameras (AREA)
Exposure Control For Cameras (AREA)

CA069905A 1968-12-16 1969-12-15 Aperture defining exposure control system Expired CA933008A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US78406468A	1968-12-16	1968-12-16

Publications (1)

Publication Number	Publication Date
CA933008A true CA933008A (en)	1973-09-04

Family

ID=25131235

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA069905A Expired CA933008A (en)	1968-12-16	1969-12-15	Aperture defining exposure control system

Country Status (7)

Country	Link
US (1)	US3614919A (de)
CA (1)	CA933008A (de)
CH (1)	CH522892A (de)
DE (1)	DE1963086C3 (de)
FR (1)	FR2026258A1 (de)
GB (1)	GB1254798A (de)
NL (1)	NL6918839A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5312603Y2 (de) *	1972-08-12	1978-04-05
JPS5650499Y2 (de) *	1972-09-18	1981-11-26
GB1587624A (en) *	1976-09-06	1981-04-08	Asahi Optical Co Ltd	Automatic exposure camera
DE2939770C2 (de) *	1979-10-01	1982-02-11	Rollei-Werke Franke & Heidecke Gmbh & Co Kg, 3300 Braunschweig	Fotografische Kamera
DE3001915C2 (de) *	1980-01-19	1982-04-01	Prontor-Werk Alfred Gauthier Gmbh, 7547 Wildbad	Blendenregelvorrichtung für photographische Kameras
US5502524A (en) *	1993-10-27	1996-03-26	Eastman Kodak Company	Aperture/shutter mechanism with damping member
US9864039B2 (en) *	2015-06-26	2018-01-09	Motorola Mobility Llc	Portable electronic device proximity sensors with multi-directional functionality

1968
- 1968-12-16 US US784064A patent/US3614919A/en not_active Expired - Lifetime
1969
- 1969-12-15 FR FR6943408A patent/FR2026258A1/fr not_active Withdrawn
- 1969-12-15 CH CH1861469A patent/CH522892A/de not_active IP Right Cessation
- 1969-12-15 CA CA069905A patent/CA933008A/en not_active Expired
- 1969-12-16 NL NL6918839A patent/NL6918839A/xx unknown
- 1969-12-16 DE DE1963086A patent/DE1963086C3/de not_active Expired
- 1969-12-16 GB GB61239/69A patent/GB1254798A/en not_active Expired

Also Published As

Publication number	Publication date
GB1254798A (en)	1971-11-24
DE1963086B2 (de)	1977-09-22
DE1963086A1 (de)	1970-07-02
CH522892A (de)	1972-05-15
DE1963086C3 (de)	1979-02-22
FR2026258A1 (de)	1970-09-18
US3614919A (en)	1971-10-26
NL6918839A (de)	1970-06-18

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