GB488071A - Improvements in or relating to photographic cameras having telemeters adapted to operate as view finders - Google Patents
Improvements in or relating to photographic cameras having telemeters adapted to operate as view findersInfo
- Publication number
- GB488071A GB488071A GB26524/37A GB2652437A GB488071A GB 488071 A GB488071 A GB 488071A GB 26524/37 A GB26524/37 A GB 26524/37A GB 2652437 A GB2652437 A GB 2652437A GB 488071 A GB488071 A GB 488071A
- Authority
- GB
- United Kingdom
- Prior art keywords
- objective
- range
- finder
- camera
- mirror
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stereoscopic And Panoramic Photography (AREA)
Abstract
488,071. Photographic range- and viewfinders. ZEISS IKON AKT.-GES. Sept. 30, 1937, No. 26524. Convention date, Oct. 3,1936. [Class 98 (i)] In a camera having a short-home-base range finder serving also as a view-finder, a partiallytransparent concave mirror is placed in the path of the rays entering the range-finder at the direct-vision end, and forms at infinity an image of markings which define the fields of view of two or more camera objectives. Each objective mount may carry its own marking, and also if desired, the concave mirror. As shown in Fig. 2, a frame 3, slidably fitted at 6, 7 to a camera provided with a rangefinder, carries a partially-transparent concave mirror 1 in the form of a silvered layer between positive and negative lenses. In a rear wall of the frame 3 is an aperture, which is disposed in front of the direct-vision aperture of the range-finder, and is surrounded by a black margin on which are marked in white two rectangles defining different objective fields. An eye looking through this range finder sees at infinity the images of these markings formed in the mirror 1. The markings may, if desired be formed on the camera front. Modifications are shown in which (1) the frame carrying the mirror is attached to the camera, and each objective carries its own marking on a frame which is rocked into position when the objective is fitted, and (2) each objective is provided with a frame carrying a mirror and the marking appropriate to the objective. Reference is made to photographic range and view-finders in which the various fields of view of exchangeable objectives are shown on a ruled plate ; to a stereoscopic range-finder having a similar field-delimiting arrangement. Specification 454,064 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE488071X | 1936-10-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB488071A true GB488071A (en) | 1938-06-30 |
Family
ID=6543735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26524/37A Expired GB488071A (en) | 1936-10-03 | 1937-09-30 | Improvements in or relating to photographic cameras having telemeters adapted to operate as view finders |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB488071A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3961344A (en) * | 1974-01-08 | 1976-06-01 | Eastman Kodak Company | Dual field viewfinder |
-
1937
- 1937-09-30 GB GB26524/37A patent/GB488071A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3961344A (en) * | 1974-01-08 | 1976-06-01 | Eastman Kodak Company | Dual field viewfinder |
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