| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a light-emitting array type exposure device capable of reducing background noise due to zero-order light and forming a collecting point having a high contrast, and to provide an image forming device using the light-emitting element array type exposure device. <P>SOLUTION: The exposure device includes: a light-emitting element array at which a plurality of light-emitting elements are arrayed one-dimensionally or two-dimensionally on a substrate; a hologram recording layer disposed on the upper side of the substrate; and a hologram element array at which a plurality of hologram elements are formed at positions, that respectively correspond to the plurality of light-emitting elements, of the hologram recording layer, so as to diffract and collect, at an outer side of illumination regions of all of the plurality of light-emitting elements, respective light rays that are emitted from the plurality of light-emitting elements respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
