GB351243A - Improvements in or relating to photographically recording theodolites - Google Patents
Improvements in or relating to photographically recording theodolitesInfo
- Publication number
- GB351243A GB351243A GB19125/30A GB1912530A GB351243A GB 351243 A GB351243 A GB 351243A GB 19125/30 A GB19125/30 A GB 19125/30A GB 1912530 A GB1912530 A GB 1912530A GB 351243 A GB351243 A GB 351243A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- image
- prism
- view
- recording
- 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
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
- G01C1/02—Theodolites
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Telescopes (AREA)
Abstract
351,243. Theodolites. ASKANIAWERKE AKT.-GES. VORM. CENTRALWERKSTATT DESSAU UND C. BAMBERG - FRIEDENAU, 87, Kaiserallee, Friedenau, Berlin. June 23,1930, No. 19125. Convention date, June 24, 1929. [Classes 97 (ii) and 98 (i).] A theodolite with means for photographically recording the two circular scale readings on the same film as the image of the field of view is characterized by the provision of an optical system for effecting relative rotation of the images of the field of view and of the circular scale readings whereby the two images are always recorded on the film in the same relative position. As shown in the Figure, the image of the field of view produced by the Cassegrain reflecting telescope 6a, 6b is recorded on the film 7 by the side of the image of the readings of the circular scales 14, 16 produced by reflection in the prisms 20, 21, refraction in the prism 35 and reflection in the prism 34. Rotation about the vertical axis 32 does not cause displacement of the images, but rotation about a horizontal axis causes the image of the circular scales to become tilted. This is obviated by causing the prism 35 to be rotated about the horizontal axis by half the angle through which the theodolite is so rotated, effected by means of the gear wheels 39, 38, 37, 36. In this case the film and cross-wires move together with the recording telescope, but the film and grating could both be fixed, in which case the reversing prism is placed in the path of the recording telescope. 1, 2 is a telescopic view-finder.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE351243X | 1929-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB351243A true GB351243A (en) | 1931-06-25 |
Family
ID=6267361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19125/30A Expired GB351243A (en) | 1929-06-24 | 1930-06-23 | Improvements in or relating to photographically recording theodolites |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB351243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380563A (en) * | 2018-12-29 | 2020-07-07 | 中国科学院长春光学精密机械与物理研究所 | Detection device, photoelectric theodolite detection system and aviation airborne optical platform detection system |
-
1930
- 1930-06-23 GB GB19125/30A patent/GB351243A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380563A (en) * | 2018-12-29 | 2020-07-07 | 中国科学院长春光学精密机械与物理研究所 | Detection device, photoelectric theodolite detection system and aviation airborne optical platform detection system |
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