| 20090109511 | HOLOGRAM RECONSTRUCTING APPARATUS - Light emitted from a light source and passes through a collimating lens forms a parallel beam, which is reflected by a reflecting surface of a movable mirror. The parallel beam is made incident on a recording medium at a certain incident angle. The reconstructed light beam generated by Bragg diffraction caused by a hologram recorded in the recording medium is output at a certain output angle. The output reconstructed light beam is received by a flat photosensor, and information recorded in the form of a hologram is read out. By changing the angle of the movable mirror in at least two directions, the incident angle can be changed, and a hologram recorded in an angle multiplexed manner can be reconstructed. By changing the incident angle in a direction perpendicular to the displacement direction, an incident angle of a reconstruction reference light beam made incident on a hologram region is controlled. | 04-30-2009 |
