JPS5978529U

JPS5978529U - Objective lens drive device

Info

Publication number: JPS5978529U
Application number: JP17479782U
Authority: JP
Inventors: 正木　快郎
Original assignee: フオスタ−電機株式会社
Priority date: 1982-11-18
Filing date: 1982-11-18
Publication date: 1984-05-28

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図は本考案に係る対物レンズ駆動装置の一実施例を
示す平面図、第２図は第１図の実施例の平面図、第３図
は第１図のＡＡ断面図、第４因は本考案装置に用いるス
プリングの一例を示す説明図である。１・・・対物レンズ、２・・・レンズホルダー、３，４
・・・スプリング、５・・・スライダー、６・・・第１
の可動コイル、？、　　１７．　１Ｂ、　　２３．　２
４・・・マグネット、８，９．　１９．２５・・・ヨー
ク、１０・・・光学系、１１．１２・・・第２の可動コ
イル、１３．１４・・・軸受、１５．　１６・・・シャ
フト、２０・・・上板、２１・・・下板、２２・・・中
板、２６．２７・・・クッション。チ″′２４／”　（”　＝　ｒ　／かニー　　　１９　　　Ｉ９０　　” 尾４凹」＼９゜FIG. 1 is a plan view showing an embodiment of the objective lens driving device according to the present invention, FIG. 2 is a plan view of the embodiment of FIG. FIG. 2 is an explanatory diagram showing an example of a spring used in the device of the present invention. 1... Objective lens, 2... Lens holder, 3, 4
...Spring, 5...Slider, 6...1st
moving coil,? , 17. 1B, 23. 2
4...Magnet, 8,9. 19.25... Yoke, 10... Optical system, 11.12... Second moving coil, 13.14... Bearing, 15. 16... Shaft, 20... Upper plate, 21... Lower plate, 22... Middle plate, 26.27... Cushion. Chi″′24/” (”=r/knee 19 I90 “tail 4 concave”＼9゜

Claims

[Scope of utility model registration request]

a first moving coil disposed coaxially and integrally with a lens holder of the objective lens; a first magnetic circuit for placing the first moving coil in a magnetic gap; a slider supporting the lens holder via a spring so as to be able to move in parallel in the direction;
a second moving coil attached to the slider so as to intersect the moving coil at a substantially right angle; and a second moving coil for placing the second moving coil in a linear magnetic gap.
and an optical system that is integrally attached to the slider and transmits and receives light between the objective lens, and focusing is performed by controlling the current supplied to the first movable coil. . An objective lens driving device, characterized in that tracking and radial feeding are performed by controlling a current supplied to the second movable coil.