DIFF Subgroup
F21S 41/25 Projection lenses
Introduced: January 2018
Full Title
Full titles differ between systems:
IPC:
Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps > characterised by refractors, transparent cover plates, light guides or filters > Projection lenses
CPC:
Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps (reversing lights F21S43/00) > characterised by refractors, transparent cover plates, light guides or filters > Projection lenses
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2018.
Child Classifications
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- F21S 41/255 Lenses with a front view of circular or truncated circular outline since 2018 IPC+CPC Available in IPC and CPC
- F21S 41/265 Composite lenses; Lenses with a patch-like shape since 2018 IPC+CPC Available in IPC and CPC
- F21S 41/275 Lens surfaces, e.g. coatings or surface structures since 2018 IPC+CPC Available in IPC and CPC