GB669959A - Improvements in aircraft cameras for taking photographs for radial nadir point triangulation - Google Patents
Improvements in aircraft cameras for taking photographs for radial nadir point triangulationInfo
- Publication number
- GB669959A GB669959A GB28539/49A GB2853949A GB669959A GB 669959 A GB669959 A GB 669959A GB 28539/49 A GB28539/49 A GB 28539/49A GB 2853949 A GB2853949 A GB 2853949A GB 669959 A GB669959 A GB 669959A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ground
- nadir point
- lens
- axis
- camera
- 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/56—Accessories
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stereoscopic And Panoramic Photography (AREA)
Abstract
669,959. Cameras for aerial surveying. NISTRI, U. Nov. 8, 1949 [Feb. 1, 1949], No. 28639/49. Class 98 (i). A camera for taking aerial photographs of the ground about a substantially vertical axis to effect radial nadir point triangulation is characterized by means whereby the indication of the position of the nadir point on the photograph of the ground is obtained on the photograph itself in the form of a reference which is capable of being clearly associated with a topographical detail of the ground which coincides with the nadir point, or with the intersection of the principal optical axis of the camera lens with the plane of the photographic plate, this indication being obtained by means of a projector consisting of a lens and illuminated grid or like indicator, the image of said grid or the like being projected by reflectors through the camera lens on to the same plane as the image of the ground at the same instant as the photograph is taken. As shown, an image at infinity of a grid 5 projected by a lens 4<SP>1</SP> and mirrors 6, 7 is recorded on a photographic material in the focal plane 10 of an aeronautical camera by the objective 8 which photographs the terrain,. the mirror 7 being controlled by a gyroscope 19, the axis 17 of which may be held truly vertical by. known means employing a pendulum erector device so that the beam from the mirror 6, which beam is parallel to the constrained axis 12 of the gyroscope, is reflected in the true vertical direction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT669959X | 1949-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB669959A true GB669959A (en) | 1952-04-09 |
Family
ID=11298780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28539/49A Expired GB669959A (en) | 1949-02-01 | 1949-11-08 | Improvements in aircraft cameras for taking photographs for radial nadir point triangulation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB669959A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3000284A (en) * | 1958-05-16 | 1961-09-19 | Fr D Optique Et De Mecanique S | Devices for determining the drientation in space of an apparatus at a given time |
| CN108227339A (en) * | 2017-12-27 | 2018-06-29 | 北京空间机电研究所 | A kind of space camera focal plane frame |
-
1949
- 1949-11-08 GB GB28539/49A patent/GB669959A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3000284A (en) * | 1958-05-16 | 1961-09-19 | Fr D Optique Et De Mecanique S | Devices for determining the drientation in space of an apparatus at a given time |
| CN108227339A (en) * | 2017-12-27 | 2018-06-29 | 北京空间机电研究所 | A kind of space camera focal plane frame |
| CN108227339B (en) * | 2017-12-27 | 2020-07-14 | 北京空间机电研究所 | Space camera focal plane frame |
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