| 摘要 |
An apparatus and a method for reproducing a hologram, and a phase light modulator are provided to match a phase of a diffracted light generated from a hologram recording medium and a phase of a reference light to each other, thereby obtaining a good hologram reproduction characteristic. A light path of a first reference light leads a laser light from a laser light source(11) to apply the first reference light on a hologram recording medium(30). A light path of a diffracted light leads the diffracted light, which is generated from the hologram recording medium by the first reference light, to a CMOS(Complementary Metal-Oxide-Semiconductor) sensor(27) having a plurality of pixels. A light path of a second reference light leads the second reference light, which has the same polarization direction as the diffracted light, from the laser light source to the CMOS sensor. A phase modulation device(16) and a biaxial rotation mirror(18) are disposed on the light path of the second reference light. Thus, a phase of the diffracted light and a phase of the second reference light are matched to each other, thereby obtaining a good DC reproducing characteristic.
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