| 摘要 |
An image display device of the present invention comprises a light converting means which converts picture signals into light beams, and a light beam scanning means which scans by beams. The light beam scanning means is provided with an x-axis optical scanner and a y-axis optical scanner each of which has a moving mirror and an excitation means. The moving mirror reflects a light beam from a light source in cascade, reflection directions being subjected to a perpendicular resonance rotation oscillation with each other because of a light beam scanning, each resonant rotation oscillation having a resonance frequency which is the same with or close to the other and being phase shifted by 90 DEG with respect to the other while having a predetermined oscillation ratio. The light beam scanning means implements a light beam scanning in a circumference direction of a circle having its center at a certain point on a screen or on a retina of a human eye, thus forming a picture image having a scanning line structure of a concentric circle form or a spiral form, with the pixels having been altered their density or size in accordance with a distance from the center.
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