Patent ID: 8690351

Claim:
A light source device for a projector, comprising: a laser light source, positioned in a straight optical path, the laser light source being configured for generating a first light along the straight optical path; and a color wheel positioned in the straight optical path; wherein the color wheel has a surface comprising an annular irradiative area, the annular irradiative area comprises a first irradiative area, a second irradiative area with a first phosphor layer, and a third irradiative area with a second phosphor layer, the first irradiative area is a transparent area without phosphor layer, the first light irradiates the first phosphor layer of the second irradiative area to generate the second light, irradiates the second phosphor layer of the third irradiative area to generate the second light, and transmits through the first irradiative area.