DE2842C - Improvements to telescopes intended for angle measurements (addendum to patent no. 2668) - Google Patents
Improvements to telescopes intended for angle measurements (addendum to patent no. 2668)Info
- Publication number
- DE2842C DE2842C DENDAT2842D DE2842DA DE2842C DE 2842 C DE2842 C DE 2842C DE NDAT2842 D DENDAT2842 D DE NDAT2842D DE 2842D A DE2842D A DE 2842DA DE 2842 C DE2842 C DE 2842C
- Authority
- DE
- Germany
- Prior art keywords
- addendum
- angle measurements
- telescopes
- intended
- telescopes intended
- 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.)
- Active
Links
- 238000005259 measurement Methods 0.000 title description 5
- 238000010276 construction Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
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
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/26—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object
- G01C3/28—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane
- G01C3/30—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane with adaptation to the measurement of the height of an object, e.g. tacheometers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Eye Examination Apparatus (AREA)
Description
1878.1878.
Klasse 42.Class 42.
ADOLPH MOSER in AACHEN. Verbesserungen an Fernrohren, die zu Winkelmessungen bestimmt sind.ADOLPH MOSER in AACHEN. Improvements to telescopes designed for angle measurements.
Zusatz-Patent zu No. 2668 vom 22. Januar 1878.Patent addition to No. 2668 of January 22, 1878.
Patentirt im Deutschen Reiche vom 26. Januar 1878 ab. Längste Dauer: 2. Februar 1892.Patented in the German Empire on January 26, 1878. Longest duration: February 2, 1892.
In der Patentschrift No. 2668 wurde angeführt die dioptrische Vorrichtung zu Präcisionseinstellungen an Fernrohren zum Winkelmessen bestehe in der Anwendung zweier prismatischen Scheiben zum Messen kleinerer Winkel mittelst Refraction der Lichtstrahlen.In patent specification no. 2668 cited the dioptric device for precision adjustments On telescopes for measuring angles there is the use of two prismatic disks for measuring smaller angles by means of Refraction of the light rays.
Indessen kann man auch durch Anwendung eines einzelnen Prismas solche Winkel mittelst Refraction messen, wenn die neutrale Axe desselben, in welcher bekanntlich keine Ableitung der Lichtstrahlen stattfindet, bei horizontalen Winkelmess'ungen horizontal, beiHöhenmessungen vertical gestellt und mit Null bezeichnet wird; jedoch darf das Prisma dann nur bis zu 90° gedreht werden, weil sonst die Ablenkung wieder in umgekehrter Richtung stattfinden würde. Der gröfste Winkel, welcher mit dem einzelnen Prisma gemessen werden kann, ist daher gleich dem Refractionswinkel desselben. Im übrigen gilt zur Berechnung der Winkel dieselbe trigonometrische Regel, wie bei zwei. Prismen; ebenso das, was bezüglich der Herstellung bezw. Regulirung der einzelnen Prismen angegeben ist, und die Vorrichtung hat auch dieselbe Construction, mit der Ausnahme, dafs das feste Prisma fortgelassen ist. Ferner mufs für Höhenmessungen die Vorrichtung ebenfalls um 90 ° gedreht werden.However, such angles can also be averaged by using a single prism Measure refraction if its neutral axis, in which, as is well known, no derivative the light rays take place, horizontally with horizontal angle measurements, with height measurements is set vertical and denoted by zero; however, the prism may then only be rotated up to 90 ° because otherwise the distraction would take place in the opposite direction. The largest angle that can be measured with the individual prism is therefore the same its angle of refraction. Otherwise, the same trigonometric applies to the calculation of the angles Rule, as with two. Prisms; as well as what bezw regarding the production. Regulation of the individual prisms is indicated, and the device also has the same construction, with the exception that the fixed prism is omitted. Furthermore, it must be used for height measurements the device can also be rotated by 90 °.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2842C true DE2842C (en) |
Family
ID=282016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT2842D Active DE2842C (en) | Improvements to telescopes intended for angle measurements (addendum to patent no. 2668) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2842C (en) |
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0
- DE DENDAT2842D patent/DE2842C/en active Active
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