PHOSPHOR PLATE AND ILLUMINATION SYSTEM WITH THE SAME

摘要

A phosphor plate includes a glass layer, a wide-angle reflection dichroic filter and a phosphor layer. The wide-angle reflection dichroic filter is disposed on an exit surface of the glass layer. A first blue light and a second blue light of the incident ray are transmissible through the wide-angle reflection dichroic filter. The phosphor layer is disposed beside the wide-angle reflection dichroic filter. By the phosphor layer, the first blue light is excited as a first green light to be outputted and the second blue light is reflected to the wide-angle reflection dichroic filter. The second blue light and a portion of the first green light outputted from the phosphor layer are reflected by the wide-angle reflection dichroic filter, so that the portion of the first green light is transmitted through the phosphor layer and the second blue light is excited as a second green light by the phosphor layer.