GB1310027A - Exposure control system - Google Patents

Exposure control system

Info

Publication number
GB1310027A
GB1310027A GB3140870A GB3140870A GB1310027A GB 1310027 A GB1310027 A GB 1310027A GB 3140870 A GB3140870 A GB 3140870A GB 3140870 A GB3140870 A GB 3140870A GB 1310027 A GB1310027 A GB 1310027A
Authority
GB
United Kingdom
Prior art keywords
exposure control
electromagnets
exposure
blades
photographic
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
GB3140870A
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.)
Filing date
Publication date
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of GB1310027A publication Critical patent/GB1310027A/en
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
    • G03B7/10—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 a servo-motor providing energy to move the setting member
    • 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

Abstract

1310027 Photographic exposure control POLAROID CORP 29 June 1970 [30 June 1969] 31408/70 Heading G2A An exposure control mechanism has two electromagnets 124, 126 with associated armatures 120, 122 and a master actuator 70 movable in a first direction to manoeuver the armatures into engagement with their respective electromagnets, the value of a first photographic function, e.g. diaphragm aperture, being determined by the instant at which a first of the electromagnets is de-energized after movement of the master actuator in a second direction, and the value of a second photographic function, e.g. exposure time, being determined by the instant at which the second electromagnet is de-energized after deenergization of the first electromagnet. The shutter blades operate as described in Specification 1310026, and the diaphragm blades 20, 22 operate as described in Specification 1310028. The shutter blades, diaphragm blades and master actuators are reset after exposure by a member 390 reciprocably driven by a motor 360 via reduction gearing and a spooling cam.
GB3140870A 1969-06-30 1970-06-29 Exposure control system Expired GB1310027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83768269A 1969-06-30 1969-06-30

Publications (1)

Publication Number Publication Date
GB1310027A true GB1310027A (en) 1973-03-14

Family

ID=25275122

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3140870A Expired GB1310027A (en) 1969-06-30 1970-06-29 Exposure control system

Country Status (6)

Country Link
US (1) US3595152A (en)
JP (1) JPS5418138B1 (en)
CA (1) CA921311A (en)
DE (1) DE2032039C2 (en)
FR (1) FR2051439A5 (en)
GB (1) GB1310027A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA998865A (en) * 1972-04-24 1976-10-26 Polaroid Corporation Photographic control system for flash and ambient light modes
JPS4997616A (en) * 1973-01-20 1974-09-14
JPS49110337A (en) * 1973-02-20 1974-10-21
JPS5271525U (en) * 1975-11-25 1977-05-28
US4335945A (en) * 1981-01-02 1982-06-22 Polaroid Corporation Camera with structure for adjusting lens disc velocity and calibration method
JP3986134B2 (en) * 1997-09-09 2007-10-03 オリンパス株式会社 Electronic imaging device
JPH1184464A (en) * 1997-09-09 1999-03-26 Olympus Optical Co Ltd Electronic image pickup device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118601B (en) * 1956-09-26 1961-11-30 Gauthier Gmbh A Photographic camera or photographic shutter with automatic exposure adjustment
US3292516A (en) * 1963-05-17 1966-12-20 Copal Co Ltd Photographic camera with automatic exposure control
GB1088915A (en) * 1964-05-15 1967-10-25 Agfa Ag Photographic camera with an exposure regulating device
DE1231546B (en) * 1964-08-27 1966-12-29 Agfa Gevaert Ag Photographic camera with an exposure control device
US3416421A (en) * 1965-05-06 1968-12-17 Agfa Gevaert Ag Exposure control for photographic cameras
DE1472637A1 (en) * 1965-05-28 1969-07-10 Gossen & Co Gmbh P Electronically controlled camera shutter
US3464332A (en) * 1966-05-12 1969-09-02 Polaroid Corp Automatic exposure control system

Also Published As

Publication number Publication date
DE2032039C2 (en) 1983-07-28
US3595152A (en) 1971-07-27
JPS5418138B1 (en) 1979-07-05
DE2032039A1 (en) 1971-01-14
FR2051439A5 (en) 1971-04-02
CA921311A (en) 1973-02-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee