Patent ID: 7293881

Claim:
A video projector for a dome screen comprising: a plurality of image display devices; a single-eye projection lens that are used jointly by the plurality of image display devices and provided for projecting beams of light from the image display devices onto the dome screen; and means for combining the beams of light from the plurality of image display devices and sending the combination to the projection lens, wherein a projection region of an image displayed on each of the image display devices corresponds to each section of the dome screen, and the projection regions to be projected onto the respective sections are combined to in the video projector create a projection image continuing throughout the full dome screen further comprising: a projector lens barrel including a synthetic prism and a projection lens; a plurality of video projection units each provided with a component adjusting an optical axis and each of the image display devices, and each having an image-projecting end aimed at the synthetic prism; and a housing accommodating the projector lens barrel and the plurality of video projection units, wherein the synthetic prism combines beams of light from the image display devices of the respective video projection units to cause the combination to travel into the projection lens.