by interference

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics > for the control of the intensity, phase, polarisation or colour > by interference

CPC:

CPC subdivides this area 8x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

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G02F 1/211 CPC only CPC only
G02F 1/212 CPC only CPC only
G02F 1/213 CPC only CPC only
G02F 1/215 CPC only CPC only
G02F 1/216 CPC only CPC only
G02F 1/217 CPC only CPC only
G02F 1/218 CPC only CPC only
G02F 1/225 in an optical waveguide structure since 1990 +3 CPC IPC+CPC Available in IPC and CPC