GB1138283A - Improvements in automatic exposure-control arrangements for photographic cameras - Google Patents

Improvements in automatic exposure-control arrangements for photographic cameras

Info

Publication number
GB1138283A
GB1138283A GB319766A GB319766A GB1138283A GB 1138283 A GB1138283 A GB 1138283A GB 319766 A GB319766 A GB 319766A GB 319766 A GB319766 A GB 319766A GB 1138283 A GB1138283 A GB 1138283A
Authority
GB
United Kingdom
Prior art keywords
spring
coil
instrument
bertram
cell
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
GB319766A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1138283A publication Critical patent/GB1138283A/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
    • G03B7/081—Analogue circuits
    • G03B7/085—Analogue circuits for control of aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Diaphragms For Cameras (AREA)
GB319766A 1965-01-25 1966-01-24 Improvements in automatic exposure-control arrangements for photographic cameras Expired GB1138283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB80260A DE1299522B (de) 1965-01-25 1965-01-25 Automatische Belichtungsregelvorrichtung fuer Kameras

Publications (1)

Publication Number Publication Date
GB1138283A true GB1138283A (en) 1968-12-27

Family

ID=6980640

Family Applications (1)

Application Number Title Priority Date Filing Date
GB319766A Expired GB1138283A (en) 1965-01-25 1966-01-24 Improvements in automatic exposure-control arrangements for photographic cameras

Country Status (6)

Country Link
AT (1) AT283903B (forum.php)
BE (1) BE675553A (forum.php)
CH (1) CH453065A (forum.php)
DE (1) DE1299522B (forum.php)
GB (1) GB1138283A (forum.php)
NL (1) NL6600958A (forum.php)

Also Published As

Publication number Publication date
DE1299522B (de) 1969-07-17
NL6600958A (forum.php) 1966-07-26
AT283903B (de) 1970-08-25
BE675553A (forum.php) 1966-05-16
CH453065A (de) 1968-05-31

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