| 摘要 |
An object of this invention is to achieve a hologram information recording and recovering device using an angle multiplexing method capable of reducing crosstalk from an adjacent hologram. When a set of incident angles of reference light on a disc in recording a hologram using the angle multiplexing method is expressed by {theta}=[theta1, theta2, . . . , thetaM], an incident angle {theta} of reference light is changed according to a position on an optical information recording medium or a track position.
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