GB1353449A - Photographic cameras - Google Patents

Photographic cameras

Info

Publication number
GB1353449A
GB1353449A GB2414672A GB2414672A GB1353449A GB 1353449 A GB1353449 A GB 1353449A GB 2414672 A GB2414672 A GB 2414672A GB 2414672 A GB2414672 A GB 2414672A GB 1353449 A GB1353449 A GB 1353449A
Authority
GB
United Kingdom
Prior art keywords
transistors
lamp
contact
light incident
photoconductor
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
GB2414672A
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.)
Seiko Koki KK
Original Assignee
Seiko Koki KK
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 Seiko Koki KK filed Critical Seiko Koki KK
Publication of GB1353449A publication Critical patent/GB1353449A/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
    • G03B7/083—Analogue circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
  • Exposure Control For Cameras (AREA)
GB2414672A 1971-05-31 1972-05-23 Photographic cameras Expired GB1353449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971044228U JPS483141U (cs) 1971-05-31 1971-05-31

Publications (1)

Publication Number Publication Date
GB1353449A true GB1353449A (en) 1974-05-15

Family

ID=27918594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2414672A Expired GB1353449A (en) 1971-05-31 1972-05-23 Photographic cameras

Country Status (4)

Country Link
JP (1) JPS483141U (cs)
DE (1) DE2226654A1 (cs)
FR (1) FR2140118B1 (cs)
GB (1) GB1353449A (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52118869U (cs) * 1976-03-05 1977-09-09

Also Published As

Publication number Publication date
FR2140118B1 (cs) 1973-07-13
DE2226654A1 (de) 1972-12-21
FR2140118A1 (cs) 1973-01-12
JPS483141U (cs) 1973-01-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee