JPS60163520U

JPS60163520U - Optical pick-up objective lens support device

Info

Publication number: JPS60163520U
Application number: JP4881384U
Authority: JP
Inventors: 田山　春蔵; 上子　充雄
Original assignee: アルプス電気株式会社
Priority date: 1984-04-03
Filing date: 1984-04-03
Publication date: 1985-10-30
Also published as: JPH054096Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１−は光学式ピックアップの概略構成図、第２図は従
来の対物レンズの支持装置を示す斜視図、第３図はその
支持原理説明図、第４図は従来の問題点の説明図、第５
図以下は本考案の実施例を示すものであり、第５図は光
学式ピックアップの主要部の斜視図、第６図はその側面
図、第７薗は駆動装置の平面図、第８図はその側面図、
第９図は駆動コイルの正面図、第１０図、第１１図は線
材と板ばねによる支持構造の説明図、第１２図は他の実
施例め説明図である。１・・・記録媒体（コンパクトディスク）＞５・・・対
物レンズ、２１・・・保持部材、２１ａ・・・鏡筒、２
２・・・ベース、２３．２４・・・磁気回路を構成する
ヨークとマグネット、２５・・・板ばね、２６・・・線
材、３０・・・駆動コイル。1- is a schematic configuration diagram of an optical pickup, FIG. 2 is a perspective view showing a conventional objective lens support device, FIG. 3 is an explanatory diagram of its supporting principle, and FIG. 4 is an explanatory diagram of conventional problems. Fifth
The following figures show an embodiment of the present invention: Fig. 5 is a perspective view of the main parts of the optical pickup, Fig. 6 is a side view thereof, Fig. 7 is a plan view of the drive device, and Fig. 8 is a perspective view of the main part of the optical pickup. its side view,
FIG. 9 is a front view of the drive coil, FIGS. 10 and 11 are explanatory diagrams of a support structure using wire rods and leaf springs, and FIG. 12 is an explanatory diagram of another embodiment. 1... Recording medium (compact disc)>5... Objective lens, 21... Holding member, 21a... Lens barrel, 2
2...Base, 23.24...Yoke and magnet constituting a magnetic circuit, 25...Leaf spring, 26...Wire, 30...Drive coil.

Claims

[Scope of utility model registration request]

(1) The objective lens that irradiates the recording medium with detection light is held by a holding member, and this holding member is supported so as to be movable in the optical axis direction of the objective lens and in the direction perpendicular to the optical axis. , in an optical pickup that is provided with a drive device that corrects the holding member in the optical axis direction and in a direction orthogonal to the optical axis, a plurality of leaf springs are provided between two leaf springs provided oppositely to each other. 1. An objective lens support device for an optical pickup, characterized in that a wire rod is laid across, and the holding member is supported at a central portion of the wire rod.

(2) The leaf spring is formed in an H shape with four support arms, and four wire rods are provided between the support arms of both leaf springs. 1) An objective lens support device for an optical pickup according to item 1).

(3) The objective lens support device for an optical pickup according to claim (1), wherein the wire itself has elasticity.