| 摘要 |
A projected image inconspicuous in seam and in smooth image quality is stably formed. An image light beam is branched by a first birefringence plate (28i), and the branched image light beam passes through a second birefringence plate (28j) set in a first state, thereby being further branched in the Y direction. Therefore, an image (IM3) composed of the original pixels (PX0), the pixels (PX2) corresponding to the branched image, and a black matrix area (BA) is formed on the screen. The image light beam passing through the second birefringence plate (28j) set in a second state is such that the image light beam branched by the first birefringence plate (28i) is brought back in the -Y direction. As a result, an image composed of a black matrix area (BA) and an image produced by superposing a branched image of the original pixels (PX0) on the original pixels (PX0), that is, the same image (IM3') as the original image (IM1) is formed on the screen. |
