JPS6239224U

JPS6239224U -

Info

Publication number: JPS6239224U
Application number: JP13187585U
Authority: JP
Priority date: 1985-08-29
Filing date: 1985-08-29
Publication date: 1987-03-09

Description

[Brief explanation of drawings]

第１図はこの考案の実施例に係る対物レンズア
クチユエータの構成を示す構成図、第２図は第１
図に示す対物レンズアクチユエータ要部を示す部
分拡大図、第３図は第１図に示す対物レンズアク
チユエータの外ヨーク体等を示す概略断面図、第
４図は第１図に示す対物レンズアクチユエータの
内ヨーク体等を示す概略斜視図、第５図は第１図
に示す対物レンズアクチユエータの弾性体を示す
要部拡大図、第６図は第１図に示す対物レンズア
クチユエータの作用を示す説明図、第７図は従来
型の対物レンズアクチユエータを示す概略構成図
である。５……対物レンズ、６ａ……トラツキングコイ
ル、６ｂ……ジツタコイル、１……レンズホルダ
、６ｃ……フオーカスコイル、２……フレーム、
７ａ……トラツキング磁石、７ｂ……ジツタ磁石
、７ｃ……フオーカス磁石、３……ベース、４ａ
，４ｂ……弾性体、９……引出し線。 FIG. 1 is a configuration diagram showing the configuration of an objective lens actuator according to an embodiment of this invention, and FIG.
3 is a schematic sectional view showing the outer yoke body etc. of the objective lens actuator shown in FIG. 1, and FIG. 4 is a partial enlarged view showing the main parts of the objective lens actuator shown in FIG. A schematic perspective view showing the inner yoke body etc. of the objective lens actuator, FIG. 5 is an enlarged view of the main part showing the elastic body of the objective lens actuator shown in FIG. 1, and FIG. 6 is an enlarged view of the objective lens actuator shown in FIG. An explanatory diagram showing the action of the lens actuator, FIG. 7 is a schematic configuration diagram showing a conventional objective lens actuator. 5... Objective lens, 6a... Tracking coil, 6b... Jitter coil, 1... Lens holder, 6c... Focus coil, 2... Frame,
7a... Tracking magnet, 7b... Jitter magnet, 7c... Focus magnet, 3... Base, 4a
, 4b...elastic body, 9... leader line.

Claims

[Claims for Utility Model Registration] An objective lens for converging and irradiating a laser beam onto a recording medium, a lens holder equipped with a tracking coil for a tracking servo and a jitter coil for a jitter servo, and a focuser for a focus servo. a frame that is provided with coils and supports and connects the lens holder swingably in the tracking direction and the jitter direction by a first support means, and a frame that is provided with a coil at a position approaching and facing the tracking coil, the jitter coil, and the focus coil, respectively; Attach tracking magnet, jitter magnet and focus magnet,
An objective lens actuator comprising a base that swingably supports and connects the frame in the focus direction by a second support means, wherein the first support means and the second support means are made of an elastic body, and In order to electrically connect the tracking coil, jitter coil, and focus coil with the outside, the lead wires of the tracking coil, jitter coil, and focus coil were inserted into their elastic bodies and pulled out to the outside. An objective lens actuator characterized by: