Detection apparatus

Details Detection apparatus Detection apparatus

G - Physics

01

N

G01N 21/65 (2006.01) G02B 26/00 (2006.01) G07D 7/12 (2006.01) G07D 7/20 (2006.01)

Patent

CA 2075056

2075056 9111703 PCTABS00006 Apparatus that can be used to authenticate a security item or otherwise analyse a sample (S) containing a Raman-active material, comprises a substantially monochromatic light source (L); means (M1, F1, F2, O) for directing the source light onto the sample; means (F2) for separating the source light from the radiation emitted from and/or scattered by the sample; means adapted to discriminate (F3) between the Raman-scattered light and light of a neighbouring wavelength; and one or more deflectors (PM) for the respective discriminated radiations. The apparatus allows a distinction to be drawn between the Raman scattering and background fluorescence.

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