Patent ID: 8537290
Filing Date: 2013-09-17
Classification: G02B,G03B,H04N

Abstract:
1. A projector apparatus, comprising: a polarization beam splitter block assuming a shape of a rectangular parallelepiped that includes two end surfaces arranged orthogonally relative to a polarization beam splitting surface and four side surfaces perpendicular to the end surfaces; a light source disposed so as to face opposite one of the side surfaces of the polarization beam splitter block, which emits illuminating light including first divergent light; an illumination optical system that is disposed between the light source and the polarization beam splitter block, and directs a light flux among illuminating light emitted from the light source to the polarization beam splitter block, the light flux including second divergent light with smaller divergent angle than the first divergent light; a reflection-type liquid crystal display element that is disposed so as to face opposite an illuminating light output surface of the polarization beam splitter block, through which an illuminating light having undergone polarization separation at the polarization beam splitting surface is output, and includes a rectangular display area through which the illuminating light having undergone the polarization separation is modulated to modulated light and the modulated light is output to the polarization beam splitter block, the rectangular display area including shorter borders and longer borders; and a projection optical system that forms a projection image with light obtained by subjecting the modulated light to polarization separation at the polarization beam splitting surface, wherein: the illumination optical system is configured to have a greater refractive power along the shorter borders of the rectangular display area than the longer borders of the rectangular display area; and the reflection-type liquid crystal display element is disposed so as to set the shorter borders of the rectangular display area parallel to the end surfaces.