Optics for phase object visualisation

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Optical systems or apparatus not provided for by any of the groups , > Optics for phase object visualisation

CPC:

Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 > Optics for phase object visualisation

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

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G02B 27/52 Phase contrast optics (in microscopes G02B21/14) since 1980 IPC+CPC Available in IPC and CPC
G02B 27/54 Schlieren-optical systems since 1980 IPC+CPC Available in IPC and CPC

Class G02,2013–2023, worldwide · Source: EPO PATSTAT

Class G02,2013–2023, worldwide · Source: EPO PATSTAT