JPH025115U

JPH025115U -

Info

Publication number: JPH025115U
Application number: JP8152588U
Authority: JP
Priority date: 1988-06-20
Filing date: 1988-06-20
Publication date: 1990-01-12

Description

[Brief explanation of drawings]

第１図は本考案の具体的一実施例であるアクチ
ユエータの構造図、第２図は従来の各種バネを用
いたアクチユエータ構造図、第３図は従来の軸摺
動方式のアクチユエータ構造図である。１，４……フオーカスレンズ、２……トラツキ
ングサーボ手段、３……フオーカスサーボ手段、
５……ベアリング、８……フオーカスレンズホル
ダー、１０……フオーカスレンズホルダー支持軸
（シヤフト）、１１……ベースプレート、１２…
…空気配管。 Figure 1 is a structural diagram of an actuator that is a specific embodiment of the present invention, Figure 2 is a structural diagram of a conventional actuator using various springs, and Figure 3 is a structural diagram of a conventional shaft sliding type actuator. . 1, 4...Focus lens, 2...Tracking servo means, 3...Focus servo means,
5...Bearing, 8...Focus lens holder, 10...Focus lens holder support shaft (shaft), 11...Base plate, 12...
...Air piping.

Claims

[Scope of utility model registration request]

A focus lens that focuses laser light and emits it onto an optical disk, and a tracking servo means that moves the focus lens in a tracking direction around a shaft-sliding support mechanism to follow the displacement of the optical disk. and a focusing servo means for moving the focus lens in the focus direction around the support mechanism to follow the displacement of the optical disk, wherein the support mechanism includes: a focus lens holder having a center hole and a laser light transmitting hole through which the laser light passes, the focus lens is held on a surface of the laser light transmitting hole that faces the optical disk, and a tracking coil is arranged below; It has a large number of air outlets that disperse and blow out air supplied through air piping, and can be attached to the center hole of the focus lens holder, and when attached, air supports the focus lens holder and the center An optical disk pickup actuator comprising: a focus lens holder support shaft whose hole serves as a bearing for a hydrostatic air bearing mechanism;