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.

Abstract: The fiberoptic interferometer includes a broadband light source which is selected to illuminate tissue of predetermined organ with light having a wavelength within a predetermined range of wavelengths. Within the predetermined range of wavelengths, the attenuation characteristics of tissue of the predetermined organ define a region of minimum attenuation upon illumination with light having a first wavelength. As a result, the fiberoptic interferometer can precisely determine the optical properties of the tissue and can therefore identify the tissue by comparing the interferometric signal produced upon illumination of the tissue sample with predetermined interferometric signals corresponding to illumination of different types of tissue of the predetermined organ with light having the first wavelength. The fiberoptic interferometer can also include a light source which includes wavelength selection means for controllably selecting the predetermined wavelength of light emitted by the light source.