| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light-emitting element array exposure device can forma spot column that is almost lined up by focusing each light ejected from respective three or more light-emitting elements which are not lined up, and to provide an image forming device using the exposure device. <P>SOLUTION: The exposure device includes: the light-emitting element array where three or more light-emitting elements are lined up on a substrate, and all the three or more light-emitting elements are not located in a line; and a hologram element array where a plurality of hologram elements are formed at positions that correspond to the three or more light-emitting elements of the hologram recording layers disposed on the substrate so as to focus the respective lights ejected from the three or more light-emitting elements. <P>COPYRIGHT: (C)2013,JPO&INPIT |
