Patent ID: 7719553
Filing Date: 2010-05-18
Classification: B41J,G03G

Abstract:
1. An exposure apparatus comprising: a plurality of light sources; a first condensing unit, arranged to contact a light emitting surface of each of the light sources, that condenses the lights emitted from the plurality of light sources; and a second condensing unit that condenses the lights from each of the light sources, which are emitted from the first condensing unit, wherein the first condensing unit is configured so that a center of curvature of an output surface, to emit the light from the light source, of the first condensing unit is positioned near the side of the second condensing unit rather than an arrangement position of the light source, and the first condensing unit has an object side focal point that is positioned at the opposite side of the second condensing unit with respect to the arrangement position of the light source.