Patent ID: 6419362
Filing Date: 2002-07-16
Classification: G03B

Abstract:
A liquid crystal projecting apparatus comprising:a light source portion for emitting light with predetermined polarization direction; a color separating portion for separating the light emitted from said light source portion into first separation light including a first color component of three primary colors and second separation light including a second and a third color components having different polarization direction to each other, and for emitting the first and the second separation lights to different directions perpendicular to each other; a first polarization beam splitter disposed on the light emitting side of the first separation light of said color separating portion and having a first light modulating element of reflection type disposed on a major surface thereof on which the first separation light is incident; a second polarization beam splitter disposed on the light emitting side of the second separation light of said color separating portion, and having a second light modulating element of reflection type disposed on a major surface thereof on which the second color component of the second separation light is incident and having a third light modulating element of reflection type disposed on a major surface thereof on which the third color component of the second separation light is incident; a color combining portion for combining the lights of the respective color components emitted from said first and said second polarization beam splitters; and a projection optics for projecting the combined light combined by said color combining portion.