| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical member that improves fidelity of a reproduction image and diffraction efficiency while suppressing illuminance unevenness. <P>SOLUTION: The optical member forms a reproduction image composed of a plurality of localized images. The optical member includes a first optical element part wherein a plurality of sub-units, respectively in which a plurality of computer generated holograms forming each of the plurality of images are combined so as to form the reproduction image, are arrayed, and a second optical element part that reduces coherency of light beams, respectively passing through at least two sub-units adjacent to each other, in the light beams passing through the first optical element part. <P>COPYRIGHT: (C)2009,JPO&INPIT |
