Patent ID: 7059725

Claim:
A light source device for use in a reflection-type image display apparatus comprising: a light source component which emits light comprising a first color component, a second color component, and a third color component, each of the color components comprising P-polarized light and S-polarized light; a polarizer component; and a color divider arranged to receive the light emitted from the light source and to direct the emitted light to the polarizer component, the polarizer component comprising: a polarization beam splitter (PBS) comprising a first input face, a second input face, a first output face, and a second output face; a reflector having an input face optically coupled to the first output face of the PBS; and a one-half wavelength plate optically coupled to an output face of the reflector, wherein the color divider is further configured to direct the first color component and the second color component of the emitted light into a first input face of the PBS and to direct the third color component of the emitted light into a second input face of the PBS, wherein outgoing light is output from the second output face of the PBS and from the one-half wavelength plate and can be directed to an optical image forming unit.