Patent ID: 8608329

Claim:
A phosphor plate, comprising: a glass layer with an exit surface, wherein a first color light in a first waveband region is transmissible through said glass layer; a wide-angle reflection dichroic filter disposed on said exit surface of said glass layer, wherein a first light beam and a second light beam of said first color light are transmissible through said wide-angle reflection dichroic filter; and a phosphor layer disposed beside said wide-angle reflection dichroic filter, wherein by said phosphor layer, said first light beam of said first color light is excited as a first light beam of a second color light in a second waveband region to be outputted and said second light beam of said first color light is reflected to said wide-angle reflection dichroic filter, wherein said second light beam of said first color light and a portion of said first light beam of said second color light outputted from said phosphor layer are reflected by said wide-angle reflection dichroic filter, so that said portion of said first light beam of said second color light is transmitted through said phosphor layer and said second light beam of said first color light is excited as a second light beam of said second color light by said phosphor layer so as to be outputted.