Reproduction apparatus and reproduction method

A reproduction method for a reproduction apparatus including a light source configured to perform a light irradiation on a hologram recording medium on which data is recorded by way of interference fringes resulting from a signal light and a reference light, an intensity modulation unit provided with a spatial light modulator arranged to apply a spatial light modulation on an incident light in units of pixel while setting a signal light area serving as a generation area for the signal light and a reference light area serving as a generation area for the reference light and configured to perform a spatial light intensity modulation on the incident light, a phase modulator configured to apply a spatial light phase modulation on the incident light in units of pixel while setting the signal light area and the reference light area, and an optical system configured to guide a light emitted from the light source to the hologram recording medium via the intensity modulation unit, the phase modulator, and an objective lens, the method comprising the steps of:

• generating the reference light by performing a drive control on respective pixels in the reference light areas of the spatial light modulator and the phase modulator;
• and
• generating a DC light to be added to a reproduction image by performing a drive control in the signal light area of the spatial light modulator to apply a spatial light intensity modulation at a same modulation amount in all pixels and performing a drive control in the signal light area of the phase modulator while setting one part of phase modulation amounts as a phase modulation amount for setting a same phase as a reference phase in the reproduction image obtained from the hologram recording medium in accordance with an irradiation of the reference light and setting the other part of the phase modulation amounts as a phase modulation amount different by π with respect to the one part of the phase modulation amounts for the drive controls in the respective pixels in the signal light areas of the spatial light modulator and the phase modulator.