Patent ID: 8926099
Filing Date: 2015-01-06
Classification: G02B,H04N

Abstract:
1. A phosphor wheel, comprising: a glass having a first region, a second region, a third region and a fourth region, wherein the degree of the central angle corresponding to said fourth region is more than or equal to 87 degrees, and the sum of degree of central angles, which correspond to said first region, said second region, said third region and said fourth region, respectively, is 360 degrees; a first phosphor agent coated on said first region and said fourth region, wherein a first color light in a first waveband region is excited as a second color light in a second waveband region by said first phosphor agent; a first filter disposed next to said first region of said glass and filtering at least a portion of said first color light and a first light beam of said second color light, so that a second light beam of said second color light is transmitted through said first filter so as to be outputted; and a second phosphor agent coated on said second region of said glass, wherein said first color light in said first waveband region is excited as a third color light in a third waveband region by said second phosphor agent; wherein said second color light in said second waveband region is yellow light, said first phosphor agent is a yellow phosphor agent, said first filter is a red light filter, and said first color light in said first waveband region is transmitted through said third region of said glass.