GB690079A - Improvements in or relating to electric exposure meters - Google Patents

Improvements in or relating to electric exposure meters

Info

Publication number
GB690079A
GB690079A GB14126/51A GB1412651A GB690079A GB 690079 A GB690079 A GB 690079A GB 14126/51 A GB14126/51 A GB 14126/51A GB 1412651 A GB1412651 A GB 1412651A GB 690079 A GB690079 A GB 690079A
Authority
GB
United Kingdom
Prior art keywords
meter
cam
exposure
adjustment
movement
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
GB14126/51A
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Publication of GB690079A publication Critical patent/GB690079A/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
    • G03B7/02—Control effected by setting a graduated member on the camera in accordance with indication or reading afforded by a light meter, which may be either separate from or built into camera body

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)

Abstract

690,079. Photographic exposure meters. ZEISS IKON AKT.-GES. June 14, 1951 [June 17, 1950], No. 14126/51. Class 98 (i). [Also in Group XL (b)] In a photo-electric exposure meter the movement is made rotatable as a whole its position being adjusted by different exposure factors so that adjustment of a final variable brings the pointer to read against a datum mark. As shown, a film speed is set by rotation of cam 18 which through a bell-crank lever 15 and pin 14 adjust the planet wheel carrier 11 of a differential consisting of sun wheels 7, 10 and planet wheels 8, 9. Shutter speed is set by a further cam 1 which adjusts the driving pinion 6 of the differential. The resultant movement of sun wheel 10 rotates a cam 13 rigid with it to rock a toothed lever 21 and adjust the angular position of the meter movement 24, the cam being so shaped as to compensate for non-linearity of the meter response. Additional exposure affecting factors may be taken into account by adjustment of the datum mark or by adjustment of the meter current. The exposure meter may be built into a camera.
GB14126/51A 1950-06-17 1951-06-14 Improvements in or relating to electric exposure meters Expired GB690079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE690079X 1950-06-17

Publications (1)

Publication Number Publication Date
GB690079A true GB690079A (en) 1953-04-08

Family

ID=6598956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14126/51A Expired GB690079A (en) 1950-06-17 1951-06-14 Improvements in or relating to electric exposure meters

Country Status (1)

Country Link
GB (1) GB690079A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074337A (en) * 1959-10-16 1963-01-22 Matsuzaki Soichiro Automatic diaphragm control for cameras

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074337A (en) * 1959-10-16 1963-01-22 Matsuzaki Soichiro Automatic diaphragm control for cameras

Similar Documents

Publication Publication Date Title
GB690079A (en) Improvements in or relating to electric exposure meters
GB512205A (en) Improvements in or relating to photographic or cinematograph cameras coupled with photoelectric exposure meters
GB904039A (en) Improvements in or relating to photographic cameras with exposure meters
GB705855A (en) Improvements in or relating to photo-electric exposure meters
GB909456A (en) Improvements in and relating to photographic cameras
GB697197A (en) Improvements in or relating to the incorporation of exposure meters in photographic cameras for use with interchangeable lenses
GB1255863A (en) Cameras
SU635362A1 (en) Method of determining excess oxidant ratio in fuel mixtures
US1370204A (en) Range-keeper
GB920255A (en) Photographic camera equipped with photo-electric exposure meter
GB678907A (en) Improvements in or relating to photo-electric exposure meters
GB688415A (en) Alarm clock
JPS52134431A (en) Image formation
GB845362A (en) Photoelectric exposure meter
GB496442A (en) Improvements in or relating to film loop formers of cinematograph apparatus
COHEN The lithium isotope ratio in F and G field stars(Li-6/Li-7 ratio for F, G, and early K field stars determined theoretically and with Fabry-Perot interferometer)[Ph. D. Thesis]
GB832016A (en) A machine or the like with a shiftable slide and with a reading device for measuringor setting the shift of the slide
GB942274A (en) Automatic diaphragm-aperture control means
GB627827A (en) Improvements in or relating to instrument dials for depth sounding indicators
GB940797A (en) Reflex photographic cameras
GB225902A (en) Photographic exposure meter
GB191010779A (en) Improvements in or relating to Cinematographs.
GB582964A (en) An improvement in or relating to liquid flow meters
GB696910A (en) Follow-up indicator
GB380392A (en) Improvements in and relating to navigational apparatus