| 摘要 |
An image displaying apparatus for two-dimensionally scanning a light beam from a light source optically modulated on the basis of image information on a surface to be scanned by a mechanical resonance type rocking operation scanning device, and observing an image formed on the surface to be scanned through an optical system, has a scanning means controlling circuit for controlling the basic state of the repetition cycle of the surface to be scanned to a plurality. It is possible to provide an image displaying apparatus which can make the frame rate of image display variable depending on a subject, can always display a good quality image on a predetermined surface, and enables the image on the predetermined surface to be observed.
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