Patent attributes
The invention relates to a control device (10) for use in an ambient light control system (20) for controlling ambient light entering a space (1) through an opening (2). An ambient light prediction unit (11) provides ambient light prediction values, which are predictions of an ambient light property at the opening (2). An ambient light adjusting unit (12) provides, at different ambient light adjusting time points, an ambient light adjusting signal depending on the ambient light prediction values for an upcoming ambient light prediction time period. The ambient light adjusting signal is adapted for use by an ambient light modifying element (22) for modifying the entering of ambient light into the space (1) through the opening (2). By taking the predicted ambient light conditions at the opening (2) into account, necessary adjustments can be made at temporally spaced ambient light adjusting time points, resulting in fewer disturbances of the users.
