GB888950A - Photographic camera with an automatic depth of focus indicator device - Google Patents

Photographic camera with an automatic depth of focus indicator device

Info

Publication number
GB888950A
GB888950A GB31879/60A GB3187960A GB888950A GB 888950 A GB888950 A GB 888950A GB 31879/60 A GB31879/60 A GB 31879/60A GB 3187960 A GB3187960 A GB 3187960A GB 888950 A GB888950 A GB 888950A
Authority
GB
United Kingdom
Prior art keywords
coil
depth
vanes
camera
sept
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
GB31879/60A
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.)
Agfa Gevaert NV
Original Assignee
Agfa 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 Agfa AG filed Critical Agfa AG
Publication of GB888950A publication Critical patent/GB888950A/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
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies

Landscapes

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

Abstract

888,950. Photo-electric exposure controls. AGFA A.G. Sept. 15, 1960 [Sept. 19, 1959], No. 31879/60. Class 40(3). [Also in Group XX] A moving coil galvanometer controlling the exposure of a camera is coupled to a depth of focus range indicator. Diaphragm vanes 10, 11, Fig. 3, are positioned by two photo-electrically energised moving coils 12, 13 and extended to form pointers 8, 9 which co-operate with a transparent depth of focus scale 5 on the camera focusing ring. In other embodiments, Figs. 4 and 5 (not shown), a single coil actuates the vanes through pin and slot or cam means and the pointers are separate from the vanes or comprise coloured plates visible in the viewfinder. In a camera in which the diaphragm 92, Fig. 6, is adjusted until a follow-up pointer 95 coincides with the galvanometer pointer 102, a slide 105 geared to the coil 98 defines the depth of focus range by co-operation with a curved edge 113. Springs 118, 119 relieve coil 98 of the weight of slide 105.
GB31879/60A 1959-09-19 1960-09-15 Photographic camera with an automatic depth of focus indicator device Expired GB888950A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE888950X 1959-09-19

Publications (1)

Publication Number Publication Date
GB888950A true GB888950A (en) 1962-02-07

Family

ID=6834325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31879/60A Expired GB888950A (en) 1959-09-19 1960-09-15 Photographic camera with an automatic depth of focus indicator device

Country Status (1)

Country Link
GB (1) GB888950A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418903A (en) * 1964-10-29 1968-12-31 Polaroid Corp Adjustable diaphragm with indicia thereon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418903A (en) * 1964-10-29 1968-12-31 Polaroid Corp Adjustable diaphragm with indicia thereon

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