JPH01133225U

JPH01133225U -

Info

Publication number: JPH01133225U
Application number: JP2478788U
Authority: JP
Priority date: 1988-02-26
Filing date: 1988-02-26
Publication date: 1989-09-11

Description

[Brief explanation of the drawing]

図は本考案の対物レンズ駆動装置の実施例を示
し、第１図ないし第４図は請求項１に対応する実
施例で、第１図は平面図、第２図は側面図、第３
図はコイル部分の製造工程を示す斜視図、第４図
は可動体と支持機構の関係を示す分解図であり、
そして、第５図ないし第８図は請求項２に対応す
る実施例で、第５図は一部の平面図、第６図及び
第７図はコイル部分の製造工程を示す斜視図及び
平面図、第８図は可動体と支持機構の関係を示す
分解図である。１……固定体、２……マグネツト、３……可動
体、４……対物レンズ、６……コイルボビン、７
……トラツキングコイル、８……フオーカシング
コイル、９……支持機構としてのヒンジ体、１２
……フオーカシングコイル。 The figures show an embodiment of the objective lens driving device of the present invention, and FIGS. 1 to 4 are embodiments corresponding to claim 1, in which FIG. 1 is a plan view, FIG. 2 is a side view, and FIG.
The figure is a perspective view showing the manufacturing process of the coil part, and FIG. 4 is an exploded view showing the relationship between the movable body and the support mechanism.
5 to 8 show an embodiment corresponding to claim 2, with FIG. 5 being a partial plan view, and FIGS. 6 and 7 being a perspective view and a plan view showing the manufacturing process of the coil portion. , FIG. 8 is an exploded view showing the relationship between the movable body and the support mechanism. 1... Fixed body, 2... Magnet, 3... Movable body, 4... Objective lens, 6... Coil bobbin, 7
... Tracking coil, 8 ... Focusing coil, 9 ... Hinge body as a support mechanism, 12
...Focusing coil.

Claims

[Claims for Utility Model Registration] (1) A movable body provided with an objective lens, a focusing direction along the optical axis of the objective lens, and a tracking direction perpendicular to the optical axis of the objective lens, through which the movable body is supported via a support mechanism. An objective lens driving device comprising: a fixed body movably supported; and a magnetic drive mechanism provided between the fixed body and the movable body to move the movable body in a focusing direction and a tracking direction, the objective lens drive device comprising: The mechanism involves winding a tracking coil and a focusing coil around a coil bobbin.
Attach the tracking coil and focusing coil to the movable body together with the coil bobbin,
An objective lens driving device characterized in that a magnet for the tracking coil and the focusing coil is attached to the fixed body. (2) A movable body equipped with an objective lens, and a fixed body that supports this movable body via a support mechanism so that it can move in the focusing direction along the optical axis of the objective lens and in the tracking direction perpendicular to the optical axis of the objective lens. and a magnetic drive mechanism provided between the fixed body and the movable body to move the movable body in the focusing direction and the tracking direction, the magnetic drive mechanism having a tracking coil attached to a coil bobbin. the tracking coil is attached to the movable body together with the coil bobbin, a focusing coil is wound around the tracking coil, the coil bobbin, and the movable body, and the tracking coil and the focusing coil are attached to the movable body. An objective lens driving device characterized in that a magnet for the objective lens is attached to the fixed body.