To evenly arrange an irradiation point of light without thinning irradiation of the light.SOLUTION: An optical scanning device comprises: an optical scan unit that causes an irradiation destination of irradiation light to repeatedly scan on a prescribed trajectory； a light emitting control unit that controls light emitting of the irradiation light, and causes an irradiation point to be irradiated on the prescribed trajectory； and a drive signal generation unit that generates a drive signal for driving the optical scan unit. The light emitting control unit is configured to cause the irradiation point to be irradiated on the prescribed trajectory so that the irradiation point almost evenly disperses in an irradiation area on a side where density of the irradiation point in the irradiation area of the irradiation light is relatively small.SELECTED DRAWING: Figure 1【課題】 光の照射を間引かずに、その照射点を偏りなく配置する。【解決手段】 光走査装置は、照射光の照射先を所定の軌跡上を繰り返し走査させる光走査部と、前記照射光の発光を制御して、前記所定の軌跡上に照射点を照射させる発光制御部と、前記光走査部を駆動するための駆動信号を生成する駆動信号生成部と、を備え、前記発光制御部は、前記照射光の照射領域における前記照射点の密度が相対的に小さい側の領域において前記照射点が略均等に分散するように、前記所定の軌跡上に照射点を照射させることを特徴とする。【選択図】図１
