Patent ID: 8964519
Filing Date: 2015-02-24
Classification: G03H,G11B

Abstract:
1. An optical information recording and reproduction device for recording and reproducing information by utilizing holography, the optical information recording and reproduction device comprising: a first light source; a mechanism for forming a reference beam from the first light source; a mechanism for forming a signal beam from the first light source; a spatial light modulator for adding information to the signal beam; a mechanism for irradiating an optical information recording medium with the signal beam added with information; a mechanism for irradiating the optical information recording medium with the reference beam: a first detection mechanism for detecting a signal beam reproduced by irradiating the optical information recording medium with the reference beam; a mechanism for conducting signal processing of reproducing information by processing information received by the first detection mechanism as a beam; a second light source; a mechanism for forming a cure beam from the second light source; a cure beam irradiation mechanism for irradiating the recording medium with the cure beam; and a second detection mechanism for detecting the cure beam transmitted by the recording medium, the cure beam irradiation mechanism adjusting irradiation time to terminate irradiation when intensity of the transmitted beam detected by the second detection mechanism has reached a predetermined reference value, wherein the reference value is previously retained in an optical information recording medium, and the reference value is referred to at time of cure.