Importance

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Abstract

A projection apparatus comprises a light source, a light scanning optical system including an electro-mechanical transducer element having at least one mirror row comprising a plurality of movable mirrors capable of deflecting the light beam from the light source in at least two directions and arranged in a direction corresponding to the main scan direction, a driving device for putting out a signal for driving the movable mirrors, the movable mirrors deflecting the light beam in response to the signal, and a light-receiving member by which the light applied from the light scanning optical system is subsidiary-scanned, at least one of the shape and arrangement of the mirrors and the subsidiary scan pitch being set so that light dots adjacent to each other in at least one of the main scan direction and the subsidiary scan direction in the pattern of light dots formed on the light-receiving member by the deflected light from the movable mirrors of the mirror row overlap each other to a sufficient degree to obtain a sufficiently good quality of image.

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First Claim