messages: Make this text.	«Il suffit en effet de déplacer une source lumineuse, par example la source 10B, et/ou la lentille 14 qui lui est associée, et/ou de modifier la distance focale de la lentille 14, pour modifier sa contribution dans le faisceau final.»
messages: user
messages: «In point of fact, it is sufficient to shift a light source, for example the sources 10 B, and/or the lens 14 which is associated with it, and/or to alter the focal length of the lens 14, in order to modify its contribution to the final beam.»
messages: assistant