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GB368603A - Improvements in or relating to view finders for use on photographic cameras - Google Patents

Improvements in or relating to view finders for use on photographic cameras

Info

Publication number
GB368603A
GB368603A GB1497731A GB1497731A GB368603A GB 368603 A GB368603 A GB 368603A GB 1497731 A GB1497731 A GB 1497731A GB 1497731 A GB1497731 A GB 1497731A GB 368603 A GB368603 A GB 368603A
Authority
GB
United Kingdom
Prior art keywords
lens
lenses
telescopes
bring
pairs
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
GB1497731A
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.)
ERNEST GLADSTONE LLOYD
Original Assignee
ERNEST GLADSTONE LLOYD
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 ERNEST GLADSTONE LLOYD filed Critical ERNEST GLADSTONE LLOYD
Priority to GB1497731A priority Critical patent/GB368603A/en
Publication of GB368603A publication Critical patent/GB368603A/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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Viewfinders (AREA)

Abstract

368,603. Photographic view-finders. LLOYD, E. G., 19, St. Michaels Street, Nottingham. May 21, 1931, No. 14977. (Classes 97 (i) and 98 (i).] A view-finder for multi-lens cameras comprises a fixed casing with diametrically opposed apertures, and a lens turret adjustable within the casing to bring any selected pair of a plurality of pairs of different lenses into line with the sighting apertures. As shown, fitting into the fixed cylinder 1 is a cylinder 2 rotatable by an indicating finger to bring the selected of three pairs of small lenses and large lenses 12, constituting telescopes, into line with the rectangular opening 4a and the small hole 4, screwed into which is a conical eye-piece 5. The telescopes are positioned by the cooperation of a spring-pressed ball with appropriate recesses. Each lens is held against a flange 18a by a spring washer 19.
GB1497731A 1931-05-21 1931-05-21 Improvements in or relating to view finders for use on photographic cameras Expired GB368603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1497731A GB368603A (en) 1931-05-21 1931-05-21 Improvements in or relating to view finders for use on photographic cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1497731A GB368603A (en) 1931-05-21 1931-05-21 Improvements in or relating to view finders for use on photographic cameras

Publications (1)

Publication Number Publication Date
GB368603A true GB368603A (en) 1932-03-10

Family

ID=10050893

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1497731A Expired GB368603A (en) 1931-05-21 1931-05-21 Improvements in or relating to view finders for use on photographic cameras

Country Status (1)

Country Link
GB (1) GB368603A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552940A (en) * 1947-05-30 1951-05-15 Pignons S A Ballaigues Viewing device for photographic apparatus and cinematographic cameras
US2771810A (en) * 1954-03-27 1956-11-27 Voigtlaender Ag Reversible viewfinder for photographic cameras
DE1027054B (en) * 1954-07-16 1958-03-27 Dr Max Armbruster Multiple viewfinder for several lens focal lengths of photographic and cinematographic cameras
US2917968A (en) * 1955-09-13 1959-12-22 Canon Camera Co Field changing means for viewfinder
DE1293572B (en) * 1968-01-04 1969-04-24 Leitz Ernst Gmbh Single-lens reflex camera
US4119984A (en) * 1977-05-03 1978-10-10 Cyril Zajac Eyepiece

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552940A (en) * 1947-05-30 1951-05-15 Pignons S A Ballaigues Viewing device for photographic apparatus and cinematographic cameras
US2771810A (en) * 1954-03-27 1956-11-27 Voigtlaender Ag Reversible viewfinder for photographic cameras
DE1027054B (en) * 1954-07-16 1958-03-27 Dr Max Armbruster Multiple viewfinder for several lens focal lengths of photographic and cinematographic cameras
US2917968A (en) * 1955-09-13 1959-12-22 Canon Camera Co Field changing means for viewfinder
DE1293572B (en) * 1968-01-04 1969-04-24 Leitz Ernst Gmbh Single-lens reflex camera
US4119984A (en) * 1977-05-03 1978-10-10 Cyril Zajac Eyepiece

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