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PCE
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DIFF Subgroup
G01J 1/36

using electric radiation detectors

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Photometry, e.g. photographic exposure meter > by comparison with reference light or electric value > intensity of the measured or reference value being varied to equalise their effects at the detector, e.g. by varying incidence angle > using separate light-paths used alternately or sequentially, e.g. flicker > using electric radiation detectors

CPC:

Photometry, e.g. photographic exposure meter (spectrophotometry G01J3/00; specially adapted for radiation pyrometry G01J5/00 ) > by comparison with reference light or electric value > intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle > using separate light paths used alternately or sequentially, e.g. flicker > using electric radiation detectors

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

Child Classifications

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