Optical pickup

Abstract

An object of the present invention is to prevent deterioration of recording and reproduction accuracy due to external vibrations or fluctuations in relative positional relationship with a recording medium in an optical pickup device for recording and reproducing information using holography. An optical pickup device (11) comprising a pickup device main body (12) for performing information recording on an optical information recording medium (1) and reproducing information from the optical information recording medium (1) by holography, and an adjustment pickup device main body (12) ) in order to correct the deviation of the relative positional relationship between the pickup device body (12) and the optical information recording medium (1). Position adjustment device, in a direction perpendicular to the surface of the optical information recording medium (1), in a direction parallel to the surface of the optical information recording medium (1), and the optical pickup device body (12) relative to the optical information recording medium (1) The position of the pickup device body (12) is changed in the direction in which the inclination of the surface changes.

Description

[0001] This application is a divisional application of the original application with the application number 01807505.3 and the filing date of March 9, 2001. The international application number of the original application is PCT / JP01 / 01845, and the international filing date is March 9, 2001. The earliest priority date is March 29, 2000. technical field [0002] The present invention relates to an optical pickup device that performs at least one operation of recording information on an optical information recording medium that uses holography to record information and reproducing information from the optical information recording medium. Background technique [0003] Holographic recording, which uses holography to record information on a recording medium, is generally performed by superimposing light having image information and reference light inside the recording medium and writing the interference pattern formed at this time into the recording medium. When reproducing the ...

AI Technical Summary

Problems solved by technology

[0009] Therefore, when carrying out holographic recording, if adopting the optical pick-up device identical with common optical disc device of structure, then there is the vibration that is applied to the optical pick-up device from the outside or the change that the relative positional relation of optical pick-up device and recording medium causes. The degree of deterioration of recording and reproduction accuracy is greater than that of ordinary optical disc devices

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