| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hologram recording device which can record a hologram while compensating specified spatial frequency components. <P>SOLUTION: Coherent light from a light source 10 is modulated in accordance with digital data by a spacial optical modulator 16, to be signal light S. A part of spatial frequency components included in the signal light S is passed through by a filter part 22, and is Fourier-transformed by a Fourier transformation lens 24, and a light recording medium 26 is irradiated with the Fourier-transformed signal light. In the filter part 22, the main opening passing through Nyquist frequency among the spatial frequency components included in the signal light S and an auxiliary opening passing through harmonics with a frequency of integral multiple of a specified spacial frequency whose regeneration rate is made low on regeneration are formed, and, by the harmonics passing through the auxiliary opening, the spatial frequency components whose regeneration rate is low can be compensated. <P>COPYRIGHT: (C)2009,JPO&INPIT |
