| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hologram recording and reproducing device that prevents reference light from acting as noise. <P>SOLUTION: A collinear hologram recording reproducing device is constituted so that an objective lens 4 that projects a hologram image on an array photodetector 6 based on reproduced light 13, and a polarized light-dependent diffraction element 12 that diffracts reference light 9, are included in a return passage of light beams from a hologram recording reproducing medium 207. <P>COPYRIGHT: (C)2007,JPO&INPIT |
