Objective lens actuator for enabling to reduce the dynamic tilt between optical disc and objective lens

Abstract

An objective lens actuator, for driving an objective lensfor focusing lights upon a recoding surface of an optical disc, comprises a moving part, which comprises the objective lensand a coil; a magnet, which is fixed on a yoke and drives the moving part; a plural number of elastic support parts, each of which supports the moving partat an end thereof; a first fixing portionand a second fixing portion, which fix other ends of the plural number of elastic support partsand are disposed opposite to each other in a focus direction; and a moving mechanism, which is provided on the first and second fixing portionand, so that the first and second fixing portionsandcan move in the focus direction, relatively, and thereby providing the objective lens actuatorenabling to reduce the dynamic relative tilt between the optical disc and the objective lens(i.e., reducing the tilt of the objective lensin the tangential direction when operating), as well as, an optical pickup and an optical disc drive.