F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F21
LIGHTING
F21
LIGHTING
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
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
F21Y2105/00
Planar light sources
F21Y2105/00
Planar light sources
F21Y2105/10
comprising a two-dimensional array of point-like light-generating elements
F21Y2105/10
comprising a two-dimensional array of point-like light-generating elements
F21Y2105/14
characterised by the overall shape of the two-dimensional array
F21Y2105/14
characterised by the overall shape of the two-dimensional array
F21Y2105/18
annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
F21Y2105/18
annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam