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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Main Authors | , |
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Format | Patent |
Language | Chinese English |
Published |
09.04.2014
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Subjects | |
Online Access | Get full text |
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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 |
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Bibliography: | Application Number: CN2012837200 |