| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hologram reconstructing apparatus which suppresses occurrence of speckles on the reconstructed image of a hologram, simplifies a system for recording and reconstructing a hologram, and enables miniaturization of the system. <P>SOLUTION: The hologram reconstructing apparatus includes a laser irradiation section 1 for irradiation with a laser beam and irradiates a recording material 101 on which the hologram of an object 100 has been recorded is irradiated with the laser beam from the laser irradiation section 1 to reconstruct the hologram, wherein the laser irradiation section 1 has a high-frequency superposition circuit 12 for superposing a high-frequency current on a direct current supplied to a laser 11, whereby the coherence of the laser beam emitted from the laser 11 toward the recording material 101 in reconstruction is diminished as compared with the coherence of single-mode laser beam. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
