Patent ID: 8142031
Filing Date: 2012-03-27
Classification: G03B,H04N

Abstract:
1. An image display apparatus, comprising: a substrate; a plurality of laser beam sources that emit different color light beams disposed on a common plane of the substrate; a plurality of light modulators that modulate the light beams emitted from the laser beam sources, the light modulators being disposed such that the light beams are incident from different directions; a projection element that projects the light beams modulated by the light modulators; and an illumination equalizing element that equalizes distribution of the light beams emitted from the laser beam sources, the illumination equalizing element being a diffraction optical element that converts the light beams emitted from the laser beam sources so as to fit a shape and size of irradiated surfaces of the light modulators, the laser beam sources being concentrated with regard to their relative positions, the plurality of laser beam sources including a first source, a second source and a third source that emit a green light, a red light and a blue light, respectively, and an optical path of the green light being shorter than optical paths of the red light and the blue light, and one of the plurality of laser beam sources emitting its laser beam in a first direction, another of the plurality of laser beam sources emitting its laser beam in a second direction, the first direction being perpendicular to the second direction.