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CPC Definition - Subclass F21Y

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Last Updated Version: 2023.05
F21Y
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
Definition statement

This place covers:

Planar two-dimensional arrangements of point-like light-generating elements having an outside perimeter shape other than square or rectangular, including but not limited to: circular, elliptical, triangular, pentagonal, and the like.