F21K9/00

Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers [2016.01]

Note(s) In this group, the following expressions are used with the meaning indicated:[2016 01] “light source” means a light-generating component intended for installation in a fitting or holder incorporated in a lighting device;”retrofit light source” means a light source comprising substantially the same attachment means as those of incandescent lamps or fluorescent lamps  “Retrofit light sources” are specially adapted for replacing or substituting such lamps  Semiconductor devices per se, or assemblies thereof, specially adapted for light emission, e g  for use in light sources (in the sense of Note (1)) are covered by subclasses H01S (e g  H01S 5/00), H10H (e g  H10H 20/00 and H10H 29/20) and H10K (e g  H10K 50/00 and H10K 59/00) Lighting devices or systems in which light sources are used are covered by subclasses F21L or F21S When classifying in this group, classification is also made in subclass F21V if detail aspects covered by that subclass are of interest