the beams of light being detected by photocells

Introduced: September 1968

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 > with attenuation or whole or partial obturation of beams of light > the beams of light being detected by photocells

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 > with attenuation or whole or partial obturation of beams of light (G01D5/40 takes precedence ) > the beams of light being detected by photocells

Of 6 combined children, 3 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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G01D 5/341 CPC only CPC only
G01D 5/342 CPC only CPC only
G01D 5/344 +1 CPC CPC only CPC only
G01D 5/347 using displacement encoding scales since 1995 +4 CPC IPC+CPC Available in IPC and CPC
G01D 5/353 influencing the transmission properties of an optical fibre since 1995 +5 CPC IPC+CPC Available in IPC and CPC
G01D 5/36 Forming the light into pulses +2 CPC IPC+CPC Available in IPC and CPC