JPS6329225U

JPS6329225U -

Info

Publication number: JPS6329225U
Application number: JP11891686U
Authority: JP
Priority date: 1986-08-04
Filing date: 1986-08-04
Publication date: 1988-02-26

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斜視図、第
２図はアクチユエータを示す平面図、第３図は第
２図の中央断面図、第４図はコンパクトデイスク
プレーヤの駆動部を示す平面図、第５図は第４図
をＶ矢視方向から見た光学系の部材配置図、第６
図は従来の光学式ピツクアツプの斜視図、第７図
と第８図は従来のアクチユエータの組付け調整作
業を示すものであり、第７図はアクチユエータの
裏面図、第８図は光学式ピツクアツプのアクチユ
エータ部分を光デイスク側から見た平面図である
。Ｐａ……光学式ピツクアツプ、２５……ターン
テーブル、３０……移動シヤーシ、３５……光学
系、３８……反射部材（全反射プリズム）、３９
……軸、４０……アクチユエータ、４１……支持
台、４２……レンズホルダ、４３……弾性支持部
材、４５……対物レンズ、４６，４７ａ，４７ｂ
……磁気発生部材。 1 to 5 show an embodiment of the present invention, in which FIG. 1 is a perspective view of an optical pickup, FIG. 2 is a plan view showing the actuator, and FIG. 3 is a central cross-section of FIG. 2. 4 is a plan view showing the drive unit of the compact disc player, FIG. 5 is a member arrangement diagram of the optical system when FIG. 4 is viewed from the direction of arrow V, and FIG.
The figure is a perspective view of a conventional optical pickup, Figures 7 and 8 show the assembly and adjustment work of a conventional actuator, Figure 7 is a back view of the actuator, and Figure 8 is a diagram of an optical pickup. FIG. 3 is a plan view of the actuator portion viewed from the optical disk side. Pa... Optical pickup, 25... Turntable, 30... Moving chassis, 35... Optical system, 38... Reflection member (total reflection prism), 39
... shaft, 40 ... actuator, 41 ... support stand, 42 ... lens holder, 43 ... elastic support member, 45 ... objective lens, 46, 47a, 47b
... Magnetism generating member.

Claims

[Scope of utility model registration request]

A movable chassis that moves along the recording surface of the optical disk is provided, and a lens holder movably supported by a shaft is mounted on the movable chassis, and a magnetic drive that drives the lens holder in the rotational direction and the axial direction. In an optical pick-up, an actuator consisting of a mechanism is mounted, and an optical system having a light-emitting element and a light-receiving element that transmits and receives a detection beam to and from an objective lens held in a lens holder is mounted on a moving chassis. , the shaft of the actuator is fixed on the movable chassis, and a support base that supports the magnetism generating member constituting the actuator and supports the lens holder via an elastic support member is fixed to the movable chassis. An optical pick-up, characterized in that the optical pick-up is fixed so that its rotational position about the axis can be adjusted.