PHOSPHOR DEVICE AND LIGHTING APPARATUS COMPRISING THE SAME

摘要

A phosphor device (1) comprises a carrier member (2) and a phosphor layer (3) as well as a reflective zone (33) being arranged at the upper face of the carrier member (2). The phosphor layer (3) comprises at least one phosphor zones (R, G). The first end face (7) of the optical transmitting member (4) covers at least a subarea (8) of each zone (R, G, 33). The exciting light, entering the optical transmitting member (4) through its second end face (9), impinges on the phosphor layer (3) and the reflective zone (33). A fraction of the impinging light is reflected after being wavelength-converted by the phosphor (s) of the phosphor layer. Another fraction of the impinging light is directly reflected by the reflective zone (33). Both fractions of the light are collected and mixed by the optical transmitting member (4). The properties of the wavelength-converted mixed light may be adjusted by adjusting the proportions of the subareas (8) of the zones (R, G, 33) irradiated by the exciting light.