Patent ID: 8644123
Filing Date: 2014-02-04
Classification: G03H,G11B

Abstract:
1. A hologram printer comprising: (a) a light source; (b) an object light generation means for generating object light in a first polarization direction with the use of a portion of light from the light source; (c) a reference light generation means for generating reference light in a second polarization direction intersecting with the first polarization direction at right angle with the use of other portion of light from the light source; (d) an irradiation means for irradiating a front surface side of a hologram recording layer of the recording medium with the object light and the reference light; (e) a polarization light selecting reflection means placed on a rear surface side of the hologram recording layer for reflecting the reference light transmitting through the hologram recording layer toward the hologram recording layer without reflecting the object light; and (f) a polarization conversion means placed between the hologram recording layer and the polarization light selecting reflection means for converting the reference light reflected by the polarization light selecting reflection means to light in a polarization direction intersecting with that in the case of transmitting through the hologram recording layer at right angle, before reaching the hologram recording layer, wherein a reflection type hologram is recorded on the hologram recording layer, the reflection type hologram formed by interference in the hologram recording layer between the reference light incident from the rear surface side of the hologram recording layer, having the polarization direction converted by the polarization conversion means, and the object light incident from the front surface side of the hologram recording layer, and wherein said recorded reflection type hologram is a portion of a hologram from which a three-dimensional image is reproduced through irradiation with reference light for reproduction, and the reflection type hologram is recorded repeatedly in a planar direction of the recording medium to record a hologram from which one three-dimensional image is reproduced as a whole.