JPS62142719U

JPS62142719U -

Info

Publication number: JPS62142719U
Application number: JP3088486U
Authority: JP
Priority date: 1986-03-03
Filing date: 1986-03-03
Publication date: 1987-09-09

Description

[Brief explanation of the drawing]

第１図〜第５図は本考案の実施例を示すもので
あり、第１図は光学式ピツクアツプの補正駆動装
置を示す平面図、第２図は第１図の側面図、第３
図はトラツキングばねを示す平面図、第４図は第
３図の側面図、第５図はその他の実施例によるト
ラツキングばねを示す平面図、第６図は従来技術
を説明するための光学式ピツクアツプの補正駆動
装置の原理を示す平面図、第７図は第６図の側面
図である。１１…対物レンズ、１２…可動部材、１３…フ
オーカスばね（板ばね）、１４…回動フレーム、
１５…回転軸、２１，２２…フオーカス方向の駆
動力を発揮する駆動機構、２５ａ〜２５ｄ，２３
，２４…トラツキング方向の駆動力を発揮する駆
動機構、３０…樹脂フイルムによるトラツキング
ばね、３１…腕部、３２…固定部、３３…取付部
、Ｄ…デイスク。 1 to 5 show an embodiment of the present invention, in which FIG. 1 is a plan view showing a correction drive device for an optical pickup, FIG. 2 is a side view of FIG. 1, and FIG.
4 is a side view of FIG. 3, FIG. 5 is a plan view of a tracking spring according to another embodiment, and FIG. 6 is an optical pickup for explaining the prior art. FIG. 7 is a plan view showing the principle of the correction drive device, and FIG. 7 is a side view of FIG. 6. 11... Objective lens, 12... Movable member, 13... Focus spring (plate spring), 14... Rotating frame,
15... Rotating shaft, 21, 22... Drive mechanism that exerts driving force in the focus direction, 25a to 25d, 23
, 24... Drive mechanism that exerts a driving force in the tracking direction, 30... Tracking spring made of resin film, 31... Arm part, 32... Fixing part, 33... Mounting part, D... Disc.

Claims

[Scope of utility model registration request]

A movable member holding the objective lens facing the disk is supported by a focus spring so as to be movable in the optical axis direction of the objective lens, and a rotating frame to which the base end of the focus spring is fixed is attached. It is rotatably supported by a rotating shaft provided parallel to the optical axis, and is provided with a drive mechanism that drives the movable member in the optical axis direction of the objective lens and in the rotating direction of the rotating frame. In a correction drive device for an optical pickup, a tracking spring made of a resin film is provided between the base and the movable member to maintain the movable member at a neutral position in the rotation direction. A correction drive device for an optical pickup, characterized in that the spring is attached with its width direction facing the rotation direction and its plate thickness direction facing the optical axis direction of the objective lens.