JPS61189419U

JPS61189419U -

Info

Publication number: JPS61189419U
Application number: JP7377285U
Authority: JP
Priority date: 1985-05-17
Filing date: 1985-05-17
Publication date: 1986-11-26

Description

[Brief explanation of the drawing]

第１図は本考案による光学ピツクアツプの補正
駆動装置の実施例を示す分解斜視図、第２図はそ
の側面図、第３図はトラツキングコイルとヨーク
との対向部を示す側面図、第４図はその正面図、
第５図と第６図は他の実施例によるヨークを示す
側面図、第７図は従来の光学式ピツクアツプの補
正駆動装置の一部を示す分解斜視図、第８図は従
来のヨークとマグネツトとの対向状態を拡大して
示す側面図、第９図は第８図の正面図である。１……対物レンズ、２１……レンズ保持部材、
２２……トラツキングばね、２３……中間フレー
ム、２６……トラツキングコイル、２７……マグ
ネツト、２８……ヨーク、２９，３２……中間フ
レームを駆動する磁喜駆動機構。 FIG. 1 is an exploded perspective view showing an embodiment of the correction drive device for an optical pickup according to the present invention, FIG. 2 is a side view thereof, FIG. The figure is its front view,
5 and 6 are side views showing a yoke according to another embodiment, FIG. 7 is an exploded perspective view showing a part of a correction drive device for a conventional optical pickup, and FIG. 8 is a side view showing a yoke according to another embodiment. FIG. 9 is a front view of FIG. 8; FIG. 1... Objective lens, 21... Lens holding member,
22...Tracking spring, 23...Intermediate frame, 26...Tracking coil, 27...Magnet, 28...Yoke, 29, 32...Magnetic drive mechanism for driving the intermediate frame.

Claims

[Scope of utility model registration request]

The intermediate frame is supported by a spring for fine movement, and a lens holding member holding an objective lens is supported by a spring supported on the intermediate frame for fine movement in a direction perpendicular to the operating direction of the intermediate frame. In a correction drive device for an optical pickup, which is provided with a magnetic drive mechanism that drives an intermediate frame and a magnetic drive mechanism that drives a lens holding member, the magnetic drive mechanism that drives the lens holding member includes a lens. It consists of a coil that has a part through which current flows in a direction perpendicular to the driving direction of the holding member, and a magnet and a yoke that face each other with this coil in between. A correction drive device for an optical pickup, characterized in that both end portions of the frame in the operating direction are formed narrowly.