Patent attributes
A method (200, 300) of controlling a luminaire (50) adapted to generate a light output (60) in a controllable direction with a user interface device (10) is disclosed. The method comprises determining (207) a relative orientation of the user interface device to the luminaire; receiving (219) a light output positioning instruction on a user interface (20) of the user interface device, said light output positioning instruction including directional information for the positioning of the light output in a specified location; converting (221) the light output positioning instruction by transforming the directional information based on the determined relative orientation; and transmitting (223) the converted light output positioning instruction to the luminaire. A computer program product, user interface device and lighting system employing this method are also disclosed.