| 摘要 |
PROBLEM TO BE SOLVED: To unnecessitate the separate installation of a sensor such as a tilt sensor, to provide high accuracy and high reliability and further to enable miniaturization as well. SOLUTION: Concerning the information reproducing device, an optical disk is irradiated with a light beam, a center detecting signal Scent, an inside detecting signal Sin and an outside detecting signal Sout are generated based on the reflected light of that light beam from the optical disk and next, the tilt on the optical disk is detected based on the respective detecting signals Scent, Sin and Sout. Then, the wave front aberration in the light beam caused by the detected tilt is corrected on a liquid crystal panel 3. It is not necessary to radiate the different light beam except for information reproduction for detecting the tilt, the configuration of the aberration corrector can be simplified and further, no mechanical working section is required. Therefore, reliability as the aberration corrector is improved and miniaturization is enabled. |
