EP 2542880 A1 20130109 - SAMPLE ANALYSIS USING TERAHERTZ SPECTROSCOPY
Title (en)
SAMPLE ANALYSIS USING TERAHERTZ SPECTROSCOPY
Title (de)
PROBENUNTERSUCHUNG MITTELS TERAHERTZ-SPEKTROSKOPIE
Title (fr)
ANALYSE D'ÉCHANTILLONS PAR SPECTROSCOPIE TÉRAHERTZIENNE
Publication
Application
Priority
- DE 102010010285 A 20100304
- EP 2011000904 W 20110224
Abstract (en)
[origin: WO2011107236A1] The invention relates to a method for analysing the material of a sample (3) using terahertz spectroscopy in order to identify material irregularities of the sample (3), having the following steps: (a) a terahertz wave transmitting device (5, 8) is used to transmit electromagnetic waves (6, 9) at a frequency in the terahertz range to the sample (3) to be analysed, (b) a terahertz wave receiving device (1, 8) is used to receive electromagnetic waves (7, 9) in the terahertz range from the sample (3), (c) the terahertz wave receiving device (1, 8) supplies the received waves (7, 9), in the form of a time domain signal or a frequency domain signal, to an evaluation device (10), (d) if a signal supplied to the evaluation device (10) is a time domain signal, the evaluation device (10) converts the time domain signal into a frequency domain signal (H) by means of a first spectral transformation, (e) the evaluation device (10) converts the frequency domain signal (H) into an output function (Q(x)) by means of a second spectral transformation, by means of which output function anomaly values (Q) determined are assigned to corresponding optical depth values (x) of the sample, (f) the evaluation device (10) presents the output function (Q(x)) as anomaly values (Q) with respect to optical depth values (x) on a display device and/or automatically determines at least one material irregularity (12) of the sample (3) from the output function (Q(x)) according to at least one predefined comparison criterion.
IPC 8 full level
G01N 21/35 (2006.01)
CPC (source: EP US)
G01N 21/3563 (2013.01 - EP US); G01N 21/3586 (2013.01 - EP US)
Citation (search report)
See references of WO 2011107236A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102010010285 A1 20110908; DE 102010010285 B4 20120322; EP 2542880 A1 20130109; US 2013048859 A1 20130228; WO 2011107236 A1 20110909
DOCDB simple family (application)
DE 102010010285 A 20100304; EP 11707582 A 20110224; EP 2011000904 W 20110224; US 201113582486 A 20110224