| 摘要 |
An optical reproducing apparatus and an optical reproducing method that can prevent unnecessary images that could transparently seen from backlight i.e. behind a reproduced image from being viewed to allow viewers to see the reproduced image clearly when holographically recorded information in an optical recording medium, particularly, a transmission type hologram is reproduced. The optical reproducing apparatus has a recorded information reproducing unit configured to reproduce recorded information corresponding to an interference image formed on a recording layer of an optical recording medium by irradiating the interference image with a reproduction beam that is the same as a reference beam used during recording, and a reproduction beam blocking unit configured to block the reproduction beam that is incident at a specific angle to the optical recording medium, and placed on the optical path of the reproduction beam positioned between light source of the reproduction beam and the optical recording medium.
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