Systems in which incident light is modified in accordance with the properties of the material investigated (where the material investigated is optically excited causing a change in wavelength of the incident light G01N21/63)

Full Title

Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light (G01N3/00 - G01N19/00 take precedence) > Systems in which incident light is modified in accordance with the properties of the material investigated (where the material investigated is optically excited causing a change in wavelength of the incident light G01N21/63)

Child Classifications

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• G01N 2021/1734
• G01N 2021/1738
• G01N 2021/1746
• G01N 2021/1748
• G01N 2021/1757
• G01N 2021/1761
• G01N 2021/1765
• G01N 2021/178
• G01N 2021/1789
• G01N 2021/1793
• G01N 21/1702
• G01N 21/171
• G01N 21/1717
• G01N 21/19 Dichroism
• G01N 21/21 Polarisation-affecting properties (G01N21/19 takes precedence)
• G01N 21/25 Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01N 21/41 Refractivity; Phase-affecting properties, e.g. optical path length (G01N21/21 takes precedence)
• G01N 21/47 Scattering, i.e. diffuse reflection (G01N21/25, G01N21/41 take precedence )
• G01N 21/55 Specular reflectivity
• G01N 21/59 Transmissivity (G01N21/25 takes precedence)