PHOSPHOR-ENHANCED LIGHTING DEVICE, RETROFIT LIGHT BULB AND LIGHT TUBE WITH REDUCED COLOR APPEARANCE

摘要

A phosphor-enhanced lighting device 100, a retrofit light bulb, a light tube and a luminaire are provided. The phosphor-enhanced lighting 100 device comprises a light source 116, a light exit window 102, a first light conversion element 112 and a second light conversion element 110. The light source 116 emits through its light emitting surface 118 source light 114 of a predefined color spectrum. The light exit window 102 emits light into an ambient of the phosphor-enhanced lighting device 100. The first light conversion element 112 comprises an inorganic luminescent material which absorbs a part of the source light 114 and converts a part of the absorbed light to light of a first color 104. The second light conversion element 110 comprises a first organic luminescent material which absorbs a part of the source light 114 and/or absorbs apart of the light 104 of the first color. The first organic luminescent material converts a part of the absorbed light to light of the second color 108. The second light conversion element 110 is optically arranged in between the light exit window 102 and the light emitting surface 118 of the light source 116. The first light conversion element 112 is optically arranged in between the second light conversion element110 and the light emitting surface 118 of the light source 116. A gap 111 is present between the first light conversion element 112 and the second light conversion element 110.