Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light > Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light

CPC:

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 the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1980.

Child Classifications

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G01N 2021/625 2nd only CPC only CPC only
G01N 21/63 optically excited since 1980 +5 CPC IPC+CPC Available in IPC and CPC
G01N 21/66 electrically excited, e.g. electroluminescence since 1980 IPC+CPC Available in IPC and CPC
G01N 21/70 mechanically excited, e.g. triboluminescence since 1980 IPC+CPC Available in IPC and CPC
G01N 21/71 thermally excited since 1980 +4 CPC IPC+CPC Available in IPC and CPC