JPS5894139U

JPS5894139U - Optical system drive device in optical information recording and reproducing device

Info

Publication number: JPS5894139U
Application number: JP18990181U
Authority: JP
Inventors: 嶋田　邦彦; 育也菊池
Original assignee: パイオニア株式会社
Priority date: 1981-12-19
Filing date: 1981-12-19
Publication date: 1983-06-25

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図は従来例を示す断面図、第２図は本考案の一実施
例を示す正面図、第３図はその側面図、第４図はコイル
を巻装したボビンを示す概略斜視図である。主要部分の符号の説明、１，１１・・・対物レンズ、２
、　７．　１５・・・マグネット、５．　８．　１８．
　１９・・・コイノペ　１３・・・磁気回路部、１７・
・・ボビン、２０・・・アーム、２１・・・ホルダー、
２２・・・ガイド孔。Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a front view showing an embodiment of the present invention, Fig. 3 is a side view thereof, and Fig. 4 is a schematic perspective view showing a bobbin wound with a coil. be. Explanation of symbols of main parts, 1, 11... Objective lens, 2
, 7. 15...Magnet, 5. 8. 18.
19... Koinope 13... Magnetic circuit section, 17.
...Bobbin, 20...Arm, 21...Holder,
22... Guide hole.

Claims

[Scope of utility model registration request]

(1) An optical system drive device that drives an optical system for irradiating a recording surface of a recording medium with a spot light, the device comprising: a magnetic circuit portion having an annular magnetic gap; and a magnetic circuit portion located within the gap between the magnetic circuit portion. a bobbin attached to the optical system, a first coil wound around the bobbin in the circumferential direction thereof, and a component parallel to the optical axis of the optical system around the bobbin; and a second coil wound such that the parallel component is located within the magnetic gap, and the optical system is arranged only in two directions: the direction of its optical axis and one direction substantially orthogonal to the optical axis. An optical system drive device in an optical information recording/reproducing device, characterized in that it is movably guided by a guide means.

(2) The guide means includes an arm that extends in one direction substantially perpendicular to the optical axis and is provided on the bobbin or the magnetic circuit side, and holds the arm slidably only in the two directions. The optical system drive in the optical information recording and reproducing apparatus according to claim 1, which is a registered utility model, characterized in that it comprises a holder having a guide hole and provided on the magnetic circuit lid or the bobbin side. Device.

(3) The optical system drive device in the optical information recording/reproducing device according to claim 2, wherein the arm has a rectangular cross section.