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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G01D 5/26

characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light

Introduced: September 1968

Title

Titles differ between systems:

IPC: using optical means, i.e. using infrared, visible or ultraviolet light

CPC: characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light

Full Title

Full titles differ between systems:

IPC:

Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable > using optical means, i.e. using infrared, visible or ultraviolet light

CPC:

Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable (G01D3/00 takes precedence; specially adapted for apparatus giving results other than momentary value of variable G01D1/00) > characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light

Of 8 combined children, 4 exist in both systems.

4 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • G01D 5/262 CPC only CPC only
  • G01D 5/264 CPC only CPC only
  • G01D 5/266 CPC only CPC only
  • G01D 5/268 CPC only CPC only
  • G01D 5/39 Scanning a visible indication of the measured value and reproducing this indication at the remote place, e.g. on the screen of a cathode ray tube IPC+CPC Available in IPC and CPC
  • G01D 5/40 specially adapted for use with infrared light IPC+CPC Available in IPC and CPC