GB1193535A - Improvements in or relating to Twin Lens Cameras with Interchangeable Objectives. - Google Patents

Improvements in or relating to Twin Lens Cameras with Interchangeable Objectives.

Info

Publication number
GB1193535A
GB1193535A GB715568A GB715568A GB1193535A GB 1193535 A GB1193535 A GB 1193535A GB 715568 A GB715568 A GB 715568A GB 715568 A GB715568 A GB 715568A GB 1193535 A GB1193535 A GB 1193535A
Authority
GB
United Kingdom
Prior art keywords
pin
cam
parallax
board
lever
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
GB715568A
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.)
Konica Camera Corp
Original Assignee
Konica Camera Corp
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 Konica Camera Corp filed Critical Konica Camera Corp
Publication of GB1193535A publication Critical patent/GB1193535A/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
    • G03B13/18—Focusing aids
    • G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
    • 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
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

1,193,535. Parallax indicators. KONICA CAMERA CORP. Feb. 13, 1968 [Feb. 17, 1967; Nov. 10, 1967], No. 7155/68. Heading G2A. A twin lens reflex camera having inter-changeable lenses has means for indicating the amount of parallax, which means is visible in the view-finder, and which automatically adjusts itself to the focal length of the particular lens attached. As shown, a viewing lens 2 and taking lens 2<SP>1</SP> are carried on a board 1 mounted on a plate 3. The system can be adjusted axially for focusing by a rack and pinion arrangement 4, 5. A pin 9 is secured to the board 1, and against the pin rests one end 7 of a cam 6 which is attached to the plate 3 by a pivot 8. A lever 10 is pivoted to the camera body at 12, and spring-urged so that a pin 11 at its lower end bears against a bar portion of cam 6, so holding the cam firmly against pin 9. The slotted upper end of lever 10 slidably engages a needle 14 which is visible in the viewing screen 13 and indicates the amount of parallax. As the lenses are moved axially for focusing adjustment, cam 6 causes corresponding movement of pin 11 and lever 10, and hence of indicator needle 14. When board 1 is replaced by another board carrying lenses 2, 2<SP>1</SP> of a different focal length, the pin 9 has a correspondingly different length, so giving cam 6 a different inclination. Fig. 3 (not shown) is a modification in which the parallax indicator is a frame sliding parallel to the plane of the viewing screen.
GB715568A 1967-02-17 1968-02-13 Improvements in or relating to Twin Lens Cameras with Interchangeable Objectives. Expired GB1193535A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1295567 1967-02-17
JP9466167 1967-11-10

Publications (1)

Publication Number Publication Date
GB1193535A true GB1193535A (en) 1970-06-03

Family

ID=26348651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB715568A Expired GB1193535A (en) 1967-02-17 1968-02-13 Improvements in or relating to Twin Lens Cameras with Interchangeable Objectives.

Country Status (2)

Country Link
DE (1) DE1295994B (en)
GB (1) GB1193535A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831789C2 (en) * 1997-08-13 2002-08-01 Friedrich A Schroeder Two-house camera with exchangeable double chamber

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE712798C (en) * 1933-05-11 1941-10-25 Franke & Heidecke Fabrik Photo Equipment on photographic cameras to compensate for the parallax of a searcher with regard to several levels
DE726708C (en) * 1937-11-17 1942-10-19 Jacques Moreau Photographic or cinematographic camera with interchangeable lenses and viewfinder with adjustable field of view

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831789C2 (en) * 1997-08-13 2002-08-01 Friedrich A Schroeder Two-house camera with exchangeable double chamber

Also Published As

Publication number Publication date
DE1295994B (en) 1969-05-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees