DIFF Main Group
G02F 2/00 Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light (G02F1/35 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
CPC: Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light (G02F1/35 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
CPC:
Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light (G02F1/35 takes precedence)
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1974.
Child Classifications
Navigate with arrow keys, Enter to open
- G02F 2/02 Frequency-changing of light, e.g. by quantum counters since 1974 IPC+CPC Available in IPC and CPC