Diffraction optics (G02B27/60 takes precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Diffraction optics

CPC: Diffraction optics (G02B27/60 takes precedence)

Full titles differ between systems:

IPC:

Optical systems or apparatus not provided for by any of the groups , > Diffraction optics

CPC:

Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 > Diffraction optics (G02B27/60 takes precedence)

CPC subdivides this area 5x more granularly than IPC with 8 additional codes.

8 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

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G02B 27/4205 +4 CPC CPC only CPC only
G02B 27/4233 +4 CPC CPC only CPC only
G02B 27/4261 CPC only CPC only
G02B 27/4266 CPC only CPC only
G02B 27/4272 +1 CPC CPC only CPC only
G02B 27/4283 CPC only CPC only
G02B 27/4288 CPC only CPC only
G02B 27/4294 CPC only CPC only
G02B 27/44 Grating systems; Zone plate systems (G02B27/46 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
G02B 27/46 Systems using spatial filters since 1980 IPC+CPC Available in IPC and CPC