PHOSPHOR-ENHANCED LIGHT SOURCE TO PRODUCE VISIBLE PATTERN AND LIGHTING DEVICE Russian patent published in 2017 - IPC F21K99/00 

FIELD: lighting.

SUBSTANCE: phosphor-enhanced light source (100) comprises a light box (112), a light emitter (122), and a luminescent layer (104). Light box (112) emits light in the environment of phosphor-enhanced light source (100). Emitter (122) emits light (120) with a first colour distribution in the direction of light box (112). Luminescent layer (104) comprises a luminescent material to absorbe light part (120) with the first colour distribution and convert the absorbed light part into light (116) with the second colour distribution. At least a part of luminescent layer (104) forms at least a part of light box (112). Luminescent layer (104) comprises a first area (102) and a second area (118), which is different from first area (102). Corresponding areas (102), (118) form a pattern. The first conversion characteristic of first area (102) is similar to the second conversion characteristic of second area (118) to receive first light radiation (110) of first area (102) into the environment and second light radiation (114) of second area (118) into the environment. Suitable light radiations (110), (114) are seen with a human naked eye (124) as similar if light emitter (122) is running . The first reflection characteristic of first area (102) differs from the second reflection characteristic of second region (118) to obtain the first ambient light reflection by first area (102) which is different from the second ambient light reflection by second area (118), if the light is incident from environment on corresponding first area (102) and second area (118). The difference between the ambient light reflections is visible with a human naked eye (124).

EFFECT: increased radiation efficiency.

14 cl, 11 dwg