A light regulation device includes at least one light sensor which
provides at its output a real brightness value, at least one regulator to
which a set brightness value can be supplied, besides the real value, and
a number n of output connections, n being greater than or equal to two.
Each output connection is coupled to the output of a regulator in order
to modify the light flux which can be supplied to at least one of the
lighting elements. The regulator is designed to determine a difference
between set and real values, to verify whether this difference lies
within or outside a predeterminable tolerance range, and, in the event
that the difference lies outside the tolerance range, to modify
accordingly the light flux from the lighting elements which can be
connected to the n output connections. At least one limit of the
tolerance range depends on the actual light flux value.