GB656595A - Improvements relating to photographic cameras - Google Patents

Improvements relating to photographic cameras

Info

Publication number
GB656595A
GB656595A GB3213849A GB3213849A GB656595A GB 656595 A GB656595 A GB 656595A GB 3213849 A GB3213849 A GB 3213849A GB 3213849 A GB3213849 A GB 3213849A GB 656595 A GB656595 A GB 656595A
Authority
GB
United Kingdom
Prior art keywords
electric
photo
improvements relating
groups
field
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
GB3213849A
Inventor
Maurice Eyre Persi Studdert
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.)
WRAY CAMERAS Ltd
Original Assignee
WRAY CAMERAS Ltd
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 WRAY CAMERAS Ltd filed Critical WRAY CAMERAS Ltd
Priority to GB3213849A priority Critical patent/GB656595A/en
Publication of GB656595A publication Critical patent/GB656595A/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
    • G03B7/04—Control effected by hand adjustment of a member that senses indication of a pointer of a built- in light-sensitive device, e.g. by restoring point to a fixed associated reference mark

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Measuring Devices (AREA)

Abstract

656,595. Electric measuring instruments. WRAY (CAMERAS), Ltd. May 20,1948, No. 32138/49. Divided out of 656,548. [Class 37] [Also in Groups XX and XL (b)] The field-magnet system 25 of an instrument forming part of a photo-electric exposure meter in which light reaches the photo-electric cell through the taking lens of a camera (see Groups XX and XL (b)) is coupled to the shuttersetting mechanism which is operated to rotate the field system so as to keep the pointer of the instrument against a fixed mark. The moving system of the meter comprises a pair of coils 34.
GB3213849A 1948-05-20 1948-05-20 Improvements relating to photographic cameras Expired GB656595A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3213849A GB656595A (en) 1948-05-20 1948-05-20 Improvements relating to photographic cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3213849A GB656595A (en) 1948-05-20 1948-05-20 Improvements relating to photographic cameras

Publications (1)

Publication Number Publication Date
GB656595A true GB656595A (en) 1951-08-29

Family

ID=10333876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3213849A Expired GB656595A (en) 1948-05-20 1948-05-20 Improvements relating to photographic cameras

Country Status (1)

Country Link
GB (1) GB656595A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1138623B (en) * 1956-09-25 1962-10-25 Agfa Ag Photographic camera with photoelectric control device
DE1148442B (en) * 1956-08-11 1963-05-09 Kurt Bertrams Photoelectric light measuring device for photographic cameras

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148442B (en) * 1956-08-11 1963-05-09 Kurt Bertrams Photoelectric light measuring device for photographic cameras
DE1138623B (en) * 1956-09-25 1962-10-25 Agfa Ag Photographic camera with photoelectric control device

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