based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction (G02F1/03 takes precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction

CPC: based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction (G02F1/03 takes precedence)

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 > based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction

CPC:

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 (G02F1/29, G02F1/35 take precedence) > based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction (G02F1/03 takes precedence)

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1990.

Child Classifications

Navigate with arrow keys, Enter to open

G02F 1/0151 +3 CPC CPC only CPC only
G02F 1/0155 +2 CPC CPC only CPC only
G02F 1/017 Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells since 2000 +7 CPC IPC+CPC Available in IPC and CPC
G02F 1/025 in an optical waveguide structure (G02F1/017, take precedence) since 1990 IPC+CPC Available in IPC and CPC