OPTICAL INFORMATION RECORDING APPARATUS OPTICAL INFORMATION REPRODUCING APPARATUS OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS OPTICAL INFORMATION RECORDING METHOD OPTICAL INFORMATION REPRODUCING METHOD AND OPTICAL INFORMATION RECORDING/REPRODUCING METHOD

摘要

The above-described problem can be solved by the following optical-information reproducing apparatus: An optical-information reproducing apparatus for reproducing a hologram storage medium into which an interference pattern is recorded as a hologram the interference pattern being formed by causing a reference beam and a signal beam to interfere with each other the optical-information reproducing apparatus including an optical detector for detecting a reproduced beam the reproduced beam being acquired by illuminating the recorded hologram with the reference beam an optical element for generating a first reference beam and a second reference beam by branching the reference beam a wavefront detector for detecting wavefront aberration of the reference beam by causing the first reference beam and the second reference beam to interfere with each other and a wavefront compensator ........