JPS5920438U

JPS5920438U - Optical system drive device in optical information reading device

Info

Publication number: JPS5920438U
Application number: JP11388382U
Authority: JP
Inventors: 隆宏加藤
Original assignee: パイオニア株式会社
Priority date: 1982-07-27
Filing date: 1982-07-27
Publication date: 1984-02-07
Also published as: JPS6319945Y2

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ａ及びｂは従来の支持機構の第１例を示す図、第
２図ａ、　　ｂ及び第３図は従来の支持機構の各々第２
例及び第３例を示す図、第４図は本考案に係る支持機構
の斜視図、第５図及び第６図ａは該支持機構の各々側断
面図及び平面図、第６図すは磁気回路部を示す図、第７
図ａ、　　ｂ、ｃ及びｄは該支持機構の原理を示す図、
第８図は本考案に係る第２の実施例を示す図である。主要部分の符号の説明、１１・・・・・・光学系、１２
゜１５．１６・・・・・・ボビン部、１３，１７．１８
・・・・・・コイル、１４・・・・・・鏡筒部、１９・
・・・・・対物レンズ、２０・・・・・・フォーカシン
グ用板バネ、２２・・・・・・ベース、２７・・・・・
・トラッキング用板バネ、３２．　３４゜３５・・・・
・・磁気回路部、３３．　３６．　３７・・・・・・磁
気ギャップ。1A and 1B are diagrams showing a first example of a conventional support mechanism, and FIGS.
Figure 4 is a perspective view of the support mechanism according to the present invention, Figures 5 and 6a are side sectional views and plan views of the support mechanism, respectively, and Figure 6 is a magnetic Diagram showing the circuit section, No. 7
Figures a, b, c and d are diagrams showing the principle of the support mechanism,
FIG. 8 is a diagram showing a second embodiment of the present invention. Explanation of symbols of main parts, 11...Optical system, 12
゜15.16...Bobbin part, 13, 17.18
...... Coil, 14... Lens barrel section, 19.
...Objective lens, 20...Focusing plate spring, 22...Base, 27...
・Tracking plate spring, 32. 34゜35...
...Magnetic circuit section, 33. 36. 37...Magnetic gap.

Claims

[Scope of utility model registration request]

an optical system for irradiating a recording surface of a recording medium with a spot light; a driving means for driving the optical system in an optical axis direction of the optical system and a direction perpendicular to the optical axis direction; an optical system drive device that includes a support mechanism that supports the optical system movably in the axial direction and the perpendicular direction and that supports the optical axis so that the optical axis is perpendicular to the recording surface, the support mechanism a generally cantilevered flexible member flexible in the direction; the flexible member being fixed at one end to the free end of the flexible member and extending toward the fixed end of the visibility member and at the other end supporting the optical member; a support member that supports the system so as to be movable only in the vertical direction, and the length of the support member is
Optical information characterized in that the distance from the free end to the center of gravity of the optical system in the optical axis direction and the vertical direction is 172 times the distance from the fixed end to the free end. Optical system drive device in reading line.