GB687374A - Improvements in or relating to photographic cameras - Google Patents
Improvements in or relating to photographic camerasInfo
- Publication number
- GB687374A GB687374A GB21361/50A GB2136150A GB687374A GB 687374 A GB687374 A GB 687374A GB 21361/50 A GB21361/50 A GB 21361/50A GB 2136150 A GB2136150 A GB 2136150A GB 687374 A GB687374 A GB 687374A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mirror
- light
- camera
- objective
- image
- 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
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
- G03B19/00—Cameras
- G03B19/02—Still-picture cameras
- G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cameras In General (AREA)
Abstract
687,374. Photographic cameras. DODIN, L. J. E. A. Aug. 29, 1950 [Aug. 30, 1949, March 20, 1950], No. 21361/50. Class 98 (i). A photographic camera of the kind employing mirrors for reflecting the image-forming rays on to a light-sensitized surface at the front of the camera is so constructed. that, when in use, the light-sensitized surface 8 is disposed facing the rear of the camera with one edge close to the objective 1, and the camera comprises plane mirrors 5, 7 so disposed that light entering through the objective is reflected from mirror 5 to mirror 7 and from mirror 7 to the surface 8, and a partition 11 near the edge of surface 8, between the latter and the objective 1, for preventing the passage of light on to the surface 8 after reflection from mirror 5 only. As applied to a reflex camera, the second mirror is movable, and for focusing is swung down over the sensitized surface which it shields from light. At the end of this movement a betweenlens shutter is opened to form an image, after reflection in the first mirror (which is fixed), on a focusing screen. To make an exposure, the movable mirror is released and the shutter closes at once, ready for operation to make the exposure when the mirror has reached its correct position to reflect the image on to the sensitized surface. The focusing screen may be pivoted and may be surrounded by a collapsable hood.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR687374X | 1949-08-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB687374A true GB687374A (en) | 1953-02-11 |
Family
ID=9026079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21361/50A Expired GB687374A (en) | 1949-08-30 | 1950-08-29 | Improvements in or relating to photographic cameras |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB687374A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3672281A (en) * | 1970-04-15 | 1972-06-27 | Polaroid Corp | Reflex camera |
US3683770A (en) * | 1970-04-24 | 1972-08-15 | Polaroid Corp | Folding camera |
US3791274A (en) * | 1972-07-05 | 1974-02-12 | Eastman Kodak Co | Anatomical camera design |
-
1950
- 1950-08-29 GB GB21361/50A patent/GB687374A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3672281A (en) * | 1970-04-15 | 1972-06-27 | Polaroid Corp | Reflex camera |
US3683770A (en) * | 1970-04-24 | 1972-08-15 | Polaroid Corp | Folding camera |
US3791274A (en) * | 1972-07-05 | 1974-02-12 | Eastman Kodak Co | Anatomical camera design |
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