| 摘要 |
<P>PROBLEM TO BE SOLVED: To completely prevent the return of a reference light transmitted through a hologram recording material to the hologram recording material side; to eliminate noise components; and to perform a recording good in S/N. <P>SOLUTION: When a transmitted light 201, transmitted through the hologram recording material 50, of the reference light 200 is made incident on a conjugation reference light optical system 30 for making the travel direction of the reference light 200 transmitted through the hologram recording material 50 into the opposite direction by reflecting the light with a reflection mirror 25 during recording, the light path of the reflected light of the transmitted light 201 is changed by changing the angle of the mirror 25. Thereby, the incidence of the reflected light of the transmitted light 201 on the hologram recording material 50 after adversely travelling in the conjugation reference light optical system 30 is prevented. Accordingly, the return of the reference light 201 transmitted through the hologram recording material 50 during recording can be completely prevented, noise components can be eliminated, and the recording good in S/N can be performed. <P>COPYRIGHT: (C)2007,JPO&INPIT |
