Optical pickup actuator and manufacturing method and optical head, and recording and/or reproducing apparatus

Abstract

The present invention provides an optical head actuator comprising a splint which is supported by a plurality of suspending supports to be movable towards a base and a magnetic circuit which drives movable components comprising a splint, a method of manufacturing the optical head actuator, an optical head which uses the optical head actuator and a device which records and / or reproduces the optical head. The movable components comprise a gravity adjustment element used for introducing radial swing at the direction that an object lens optical axis is vertical the information memory surface of an information memory medium during a focusing operation period in a highband which is higher than the first resonance frequency of the optical head actuator. The method of manufacturing the optical head actuator comprises detecting the radial swing direction towards each focusing driving frequency, adjusting the gravity of the movable components when the radial swing direction is not the expected direction and adjusting the gravity of the movable component until the radial swing is almost vertical to the direction of the information memory surface of the information memory medium at the object lens optical axis to be introduced.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2004-0046652 filed with the Korean Intellectual Property Office on Jun. 22, 2004, which is hereby incorporated by reference. technical field [0002] The present invention relates to an optical recording and / or reproducing apparatus, and more particularly, to an optical head actuator designed to improve the adaptability of an optical disc having a deflection error, a method for manufacturing the optical head actuator method, and an optical head and an optical recording and / or reproducing apparatus using such an optical head actuator. Background technique [0003] Generally, an optical recording and / or reproducing device that records and / or reproduces information on an information storage surface of an information storage medium (for example, an optical disc recording surface) uses an optical head to emit laser light to the recording surface and and / o...

AI Technical Summary

Problems solved by technology

That is, it is difficult to provide A-type rocking characteristics in the high frequency band by adjusting the stiffness of the suspensions located at the inner and outer peripheries of the disc

Therefore, conventional methods cannot provide high adaptability to deflection errors of optical discs for high-speed optical recording and / or reproducing devices.

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