GB502908A - Improvements in or relating to photographic shutters - Google Patents

Improvements in or relating to photographic shutters

Info

Publication number
GB502908A
GB502908A GB26239/37A GB2623937A GB502908A GB 502908 A GB502908 A GB 502908A GB 26239/37 A GB26239/37 A GB 26239/37A GB 2623937 A GB2623937 A GB 2623937A GB 502908 A GB502908 A GB 502908A
Authority
GB
United Kingdom
Prior art keywords
cell
shutter
photo
casing
pointer
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
GB26239/37A
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.)
JUNGHANS A I G GEB
Original Assignee
JUNGHANS A I G GEB
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 JUNGHANS A I G GEB filed Critical JUNGHANS A I G GEB
Publication of GB502908A publication Critical patent/GB502908A/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
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)

Abstract

502,908. Photo - electric exposure meters. JUNGHANS AKT.-GES., GEB. Sept. 28, 1937, No. 26239. Convention date, Oct. 31, 1936. [Class 98 (i)] In a photographic shutter combined with a photo electric exposure meter, the parts of the exposure meter other than the photocell, are built into one or more drum-shaped housings coxially mounted on the rear collar of the shutter housing. The main housing 8 and the front lens support 9 enclose an annular space 10 in which are located the' photo-cell 1 and the mechanical part of the shutter. A drumshaped housing 11 is mounted on the lens support 8a and contains an indicating instrument 13, a permanent magnet 14 and a variable resistance 17. The pointer 15 of the instrument may be observed through the window 16, and a pointer 18 on the ring 18a controls the resistance. Two diaphragms 6, 7 provided with half crescent shaped vanes are arranged in front of the photo-cell 1, and are respectively connected to the speed-adjusting and diaphragm-adjusting members of the shutter. The pointer of the instrument is brought to a fixed mark by adjustment of the speed and diaphragm members. In a modification, the rear housing is divided into two or more housings which may contain some of the parts of the shutter mechanism in addition to the parts of the exposure meter. A window obliquely mounted in the rear wall of the rear housing for observation of the pointer, is also described. The Specification as open to inspection under Sect. 91 also comprises several different means of mounting the sensitive cell. In one example, the cell is mounted, in its own casing coaxially with the lens support, and may be of annular or semi-annular form. The casing may be in front, on, or behind the shutter casing. The cell may also be accommodated in a casing which is hinged to, and may cover, the lens aperture. When folded back from the lens, the casing presents the photo cell to the light. This subject-matter does not appear in the Specification as accepted.
GB26239/37A 1936-10-31 1937-09-28 Improvements in or relating to photographic shutters Expired GB502908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE502908X 1936-10-31

Publications (1)

Publication Number Publication Date
GB502908A true GB502908A (en) 1939-03-28

Family

ID=6545980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26239/37A Expired GB502908A (en) 1936-10-31 1937-09-28 Improvements in or relating to photographic shutters

Country Status (1)

Country Link
GB (1) GB502908A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2874622A (en) * 1954-10-01 1959-02-24 Hans Deckel Photographic camera construction
US2943544A (en) * 1960-07-05 Cronholm
US3031581A (en) * 1962-04-24 Kukuk
US3040643A (en) * 1955-03-11 1962-06-26 Gauthier Gmbh A Photographic intra-lens shutter with incorporated electric exposure-meter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2943544A (en) * 1960-07-05 Cronholm
US3031581A (en) * 1962-04-24 Kukuk
US2874622A (en) * 1954-10-01 1959-02-24 Hans Deckel Photographic camera construction
US3040643A (en) * 1955-03-11 1962-06-26 Gauthier Gmbh A Photographic intra-lens shutter with incorporated electric exposure-meter

Similar Documents

Publication Publication Date Title
GB502908A (en) Improvements in or relating to photographic shutters
US2070664A (en) Photoelectric exposure meter
US2229289A (en) Photographic camera
US2191414A (en) Exposure meter
US2275344A (en) Measuring instrument, particularly an exposure meter
GB466923A (en) Improvements in or relating to photographic or cinematographic cameras having photoelectric exposure meters
GB541774A (en) Improvements in or relating to means for adjusting exposure times and stop values for photographic or cinematographic cameras
GB522623A (en) Photoelectric exposure meter
GB439224A (en) Improvements in or relating to photo-electric exposure meters and attachments therefor
GB502620A (en) Improvements in and relating to photographic cameras
GB476875A (en) Improvements in or relating to photographic and kinematograph cameras provided with exposure meters
US2934996A (en) Photographic exposure meter
GB483875A (en) Improvements in and relating to photographic cameras
GB451533A (en) Improvements relating to photographic cameras combined with photo-electric exposure meters
GB519005A (en) Improvements in photographic exposure meters
GB454297A (en) Improvements in photographic cameras
GB471021A (en) Improvements in or relating to photographic or cinematographic cameras having photoelectric exposure meters
US1795797A (en) Exposure guide for camera shutters
GB569256A (en) Photographic reflex cameras fitted with exposure meters
GB380654A (en) Improvements in and relating to sensitive measuring instruments
GB499535A (en) An indicating device for the lens diaphragm of cinematographic cameras
GB541966A (en) Improvements in photographic or cinematographic cameras having coupled photoelectricexposure meters
GB931426A (en) Twin-lens photographic camera combined with an exposure meter
GB732914A (en) Improvements in or relating to photometers, more particularly photographic exposure meters
GB475465A (en) Photographic camera with photo-electric exposure meter