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PCE
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DIFF Subgroup
G02B 9/30

the middle component being a - compound meniscus having a + lens

Introduced: September 1968

Title

Titles differ between systems:

IPC: the middle component being a – compound meniscus having a + lens

CPC: the middle component being a - compound meniscus having a + lens

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 three components only > arranged + – + > the middle component being a – compound meniscus having a + lens

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 three components only > arranged + - + > the middle component being a - compound meniscus having a + lens

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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  • G02B 9/32 the + lens being a meniscus IPC+CPC Available in IPC and CPC