Is offered to manner and its execution adaptation brightness of addition light to plain air the circuit device

摘要

PCT No. PCT/EP90/01230 Sec. 371 Date Jan. 28, 1992 Sec. 102(e) Date Jan. 28, 1992 PCT Filed Jul. 27, 1990 PCT Pub. No. WO91/02441 PCT Pub. Date Feb. 21, 1991.A method and circuit arrangement for adapting the light intensity of the summation light (Ei) of a room lit by internal light (Ek) and external light (E'i) to the external light (Ea), which varies with the time of day, in which the light intensity of the internal light is controlled in dependence on one or more control parameters according to a given function and the function can be varied according to individual preference, are to be arranged so as to provide means of making finer adjustments to the light intensity in a room. This is achieved by determining the function by a plurality of independently settable function values (11), each function value (11) being variable independently of other function values (11).