GB951248A - Improvements in or relating to photographic cameras - Google Patents

Improvements in or relating to photographic cameras

Info

Publication number
GB951248A
GB951248A GB3495960A GB3495960A GB951248A GB 951248 A GB951248 A GB 951248A GB 3495960 A GB3495960 A GB 3495960A GB 3495960 A GB3495960 A GB 3495960A GB 951248 A GB951248 A GB 951248A
Authority
GB
United Kingdom
Prior art keywords
focus
setting
ring
diaphragm
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
GB3495960A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB951248A publication Critical patent/GB951248A/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
    • G03B7/006—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly setting of both diaphragm and distance
    • 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
    • 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
    • G03B7/12—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 a hand-actuated member moved from one position to another providing the energy to move the setting member, e.g. depression of shutter release button causes a stepped feeler to co-operate with the pointer of the light-sensitive device to set the diaphragm and thereafter release the shutter

Abstract

951,248. Photographic cameras. KODAK Ltd. Oct. 12, 1960 [Oct. 12, 1959], No. 34959/60. Heading G2A. In a photographic camera having a focusing type objective and a photo-electric device responsive to scene brightness, the focus of the objective is adjusted automatically by the photo-electric device as a function of scene brightness. As shown a lens focusing ring 50, exposure time setting ring 22 and diaphragm aperture setting ring 58 are all coupled together for common setting movement. Normally the setting ring is held in an end position corresponding to minimum aperture and exposure time by means of a lever 64 which is pivoted at 65 and engages an arm 60 under loading of a strong spring 66. On depression of a body release 72, coupled to the lever 64 by means of a pin and slot connection 70, 68, the setting rings rotate in an anti-clockwise direction under loading of a weak spring 62 until a stepped cam element 48 is arrested in a position determined-according to the ambient light level-by the pointer 18 of an exposure meter galvanometer 14, a fixed abutment surface 74 being provided against which the pointer is pressed. The adjustment of the lens focus is so arranged relative to the adjustment of the diaphragm that the near limit of the depth of focus is maintained substantially constant at about 4 feet, whilst the far limit moves from infinity towards the near limit as the diaphragm aperture is increased.
GB3495960A 1959-10-12 1960-10-12 Improvements in or relating to photographic cameras Expired GB951248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84568659A 1959-10-12 1959-10-12

Publications (1)

Publication Number Publication Date
GB951248A true GB951248A (en) 1964-03-04

Family

ID=25295848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3495960A Expired GB951248A (en) 1959-10-12 1960-10-12 Improvements in or relating to photographic cameras

Country Status (1)

Country Link
GB (1) GB951248A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231647A (en) * 1978-02-07 1980-11-04 Seiko Koki Kabushiki Kaisha Automatic focusing camera
US4549801A (en) * 1983-03-21 1985-10-29 W. Haking Enterprises Limited Automatic focussing camera with automatic aperture setting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231647A (en) * 1978-02-07 1980-11-04 Seiko Koki Kabushiki Kaisha Automatic focusing camera
US4549801A (en) * 1983-03-21 1985-10-29 W. Haking Enterprises Limited Automatic focussing camera with automatic aperture setting

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