Patent ID: 7198371

Claim:
An image displaying apparatus comprising: a white light source configured to emit a white beam; a separating-combining unit having wavelength selective wave plates and polarizing beam splitters, configured to receive the white beam and separate the white beam into three primary-color beams and receive reflected beams, combine the reflected beams, and emit the combined beams; reflective spatial light modulators configured to receive the three primary-color beams, respectively, modulate the received beams, and reflect the modulated beams toward the separating-combining unit; a projecting unit configured to receive the combined beams and project the combined beams; and a quartz wave plate arranged between each of the polarizing beam splitters of the separating-combining unit and each of the reflective spatial light modulators, configured to adjust a polarization direction of the beam emitted from the separating-combining unit toward the reflective spatial light modulator, the quartz wave plate having laminated two elemental quartz plates, an angle formed between slow axes of the two elemental quartz plates being within a range of 5 minutes to 15 minutes from a right angle.