arranged + -- +

Introduced: September 1968

Title

Titles differ between systems:

IPC: arranged + –– +

CPC: arranged + -- +

Full Title

Full titles differ between systems:

IPC:

Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – > having four components only > arranged + –– +

CPC:

Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - (G02B15/00 takes precedence) > having four components only > arranged + -- +

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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G02B 9/38 both - components being meniscus IPC+CPC Available in IPC and CPC
G02B 9/44 both - components being biconcave IPC+CPC Available in IPC and CPC
G02B 9/50 both + components being meniscus IPC+CPC Available in IPC and CPC
G02B 9/52 the rear + component being compound IPC+CPC Available in IPC and CPC
G02B 9/54 the front + component being compound IPC+CPC Available in IPC and CPC
G02B 9/56 all components being simple lenses IPC+CPC Available in IPC and CPC