Abstract: The invention refers to providing a control module allowing to reduce computational efforts for providing a luminaire with a tunable color temperature. The luminaire (100) comprises two light sources (112, 111), for instance, LEDs, wherein each light source generates white light at a different CCT. The control module comprises a color temperature providing unit (121) providing a desired color temperature, and an assignment providing unit (122) providing an assignment list comprising assignments, wherein each assignment comprises a predefined CCT to which brightness values for each light source are assigned. A brightness value determination unit (123) determines brightness values for the light sources based on the desired color temperature and the assignment list, and a control unit (124) controls the luminaire based on the determined brightness values. The control module allows to reduce the constructional and computational efforts for providing a color temperature tunable luminaire.

Abstract: The invention refers to providing a control module allowing to reduce computational efforts for providing a luminaire with a tunable color temperature. The luminaire (100) comprises two light sources (112, 111), for instance, LEDs, wherein each light source generates white light at a different CCT. The control module comprises a color temperature providing unit (121) providing a desired color temperature, and an assignment providing unit (122) providing an assignment list comprising assignments, wherein each assignment comprises a predefined CCT to which brightness values for each light source are assigned. A brightness value determination unit (123) determines brightness values for the light sources based on the desired color temperature and the assignment list, and a control unit (124) controls the luminaire based on the determined brightness values. The control module allows to reduce the constructional and computational efforts for providing a color temperature tunable luminaire.