JPS6283223U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案による光ピツクアツプの一例
を示す平面図、第２図は第１図のＡＡ線断面図、
第３図は第１図中より可動部を外した平面図、第
４図は磁気ヨークと固定基板とを示す斜視図であ
る。 １１：固定基板、１２：中心軸、１４：可動基
板、１６：対物レンズ、１７：フオーカシング用
コイル、１７ａ：接着剤層、２１，２２：フオー
カシング用永久磁石、２３〜２６：フオーカシン
グ用磁気ヨーク、２７：トラツキング用コイル、
３１，３２：トラツキング用永久磁石、３３〜３
６：トラツキング用永久磁石。 Fig. 1 is a plan view showing an example of an optical pickup according to this invention, Fig. 2 is a cross-sectional view taken along the line AA in Fig. 1,
FIG. 3 is a plan view from FIG. 1 with the movable part removed, and FIG. 4 is a perspective view showing the magnetic yoke and the fixed substrate. 11: Fixed substrate, 12: Central axis, 14: Movable substrate, 16: Objective lens, 17: Coil for focusing, 17a: Adhesive layer, 21, 22: Permanent magnet for focusing, 23 to 26: Magnetic yoke for focusing, 27: Tracking coil,
31, 32: Permanent magnet for tracking, 33-3
6: Permanent magnet for tracking.

Claims (1)

【実用新案登録請求の範囲】 可動基板を回動自在に、かつその回動軸心に沿
つて移動自在に固定基板上に取付け、その可動基
板に、その回動軸心から離されて読取用対物レン
ズを取付け、上記可動基板の回動及び軸方向移動
をそれぞれ電磁駆動手段により行う光ピツクアツ
プにおいて、 上記可動基板を軸方向に移動させる電磁駆動手
段の電流が供給されるフオーカシング用コイルは
ボビンなしで各巻線が順次互に溶着されると共に
その外周面に強化用接着剤層が形成されているこ
とを特徴とする光ピツクアツプ。[Scope of Claim for Utility Model Registration] A movable substrate is rotatably mounted on a fixed substrate so as to be movable along the axis of rotation, and a device for reading is mounted on the movable substrate at a distance from the axis of rotation. In an optical pickup in which an objective lens is attached and the movable substrate is rotated and moved in the axial direction by electromagnetic drive means, the focusing coil to which the current of the electromagnetic drive means for moving the movable substrate in the axial direction is supplied does not have a bobbin. An optical pickup characterized in that the windings are sequentially welded to each other and a reinforcing adhesive layer is formed on the outer peripheral surface of the windings.