Optical measuring system with filter unit for extracting electromagnetic radiation

The invention relates to an optical measuring system for determining coordinates of points, more particularly for distance measurement, more particularly a geodetic surveying apparatus, coordinate measuring machine or scanning device. The measuring system comprises a radiation source (52, 53) for em...

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Bibliographic Details
Main Authors HINDERLING JUERG, SIERCKS KNUT
Format Patent
LanguageChinese
English
Published 09.04.2014
Subjects
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING DISTANCES, LEVELS OR BEARINGS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
NAVIGATION
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Summary:The invention relates to an optical measuring system for determining coordinates of points, more particularly for distance measurement, more particularly a geodetic surveying apparatus, coordinate measuring machine or scanning device. The measuring system comprises a radiation source (52, 53) for emitting electromagnetic radiation having an emission wavelength and a receiving unit having a filter unit (51) for extracting electromagnetic radiation in a defined wavelength range according to the interference principle and a detector (56), arranged in such a way that the radiation that can be extracted by means of the filter unit (51) is detectable by the detector (56) Moreover, the filter unit (51) comprises at least two mirror elements which are at least partly reflective and which are constructed in a multilayered fashion, wherein the mirror elements are oriented substantially parallel to one another and two adjacent mirror elements in each case enclose a cavity and are arranged at a specific distance with res
Bibliography:Application Number: CN2012837200