Patent ID: 7609285

Claim:
An exposure device comprising: at least one first light source column that includes a plurality of light sources that are arranged in a first direction; at least one second light source column that includes a plurality of light sources that are arranged in the first direction and located a distance from the corresponding light sources of the first light source column in a second direction that intersects with the first direction; and at least one light converger that collects light emitted from each of the light sources of the first light source column and the second light source column toward an exposed surface, wherein light emitted from the light sources of the first light source column and light emitted from the corresponding light sources of the second light source column, which are located to the second direction relative to the light sources of the first light source column, are multiply exposed on the exposed surface, a distance along the first direction between the center of a first light source of the first light source column and the center of a second light source of the second light source column, which is located to the second direction relative to the first light source, is larger than a distance along the first direction between the center of a third light source of the first light source column, which is located farther from an optical axis of the light converger than the first light source and the center of a fourth light source of the second light source column, which is located to the second direction relative to the third light source.