JPS6080518U

JPS6080518U - optical head

Info

Publication number: JPS6080518U
Application number: JP17183983U
Authority: JP
Inventors: 義治田中
Original assignee: 萬世工業株式会社
Priority date: 1983-11-04
Filing date: 1983-11-04
Publication date: 1985-06-04

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案の好適な実施例を示すものであり、第１図
は光学ヘッド全体を示す一部断面上面図、第２図は光学
ヘッド全体を示す一部断面正面図、第３図は案内装置の
第１実施例を示す分解斜視図、第４図は同実施例の要部
の拡大断面図、第５図は案内装置の第２実施例の一部を
示す断面図、第６図は同実施例の案内体の一部を示す上
面図、第７−図は光学装置の一例を示す説明図、第８図
は案内装置の第３実施例の案内体の一個を示す斜視図、
第９図は同実施例の要部の拡大断面図を示すものである
。１・・・保持体、３，１０・・・制御駆動装置、１４・
・・案内装置、１５・・・第１案内体、１６・・・基台
、１９・・・第２案内体、２０・・・中間案内体、２１
．２４・・・突起、２３．２６・・・溝、３１・・・光
ビーム、３２・・・光源、３４・・・情報媒体、３５・
・・光スポット、３９・・・情報トラック。The drawings show a preferred embodiment of the present invention; FIG. 1 is a partially sectional top view showing the entire optical head, FIG. 2 is a partially sectional front view showing the entire optical head, and FIG. 3 is a guide. FIG. 4 is an enlarged sectional view of essential parts of the first embodiment of the device, FIG. 5 is a sectional view of a part of the second embodiment of the guide device, and FIG. 6 is an exploded perspective view of the first embodiment of the device. FIG. 7 is an explanatory diagram showing an example of the optical device; FIG. 8 is a perspective view showing one of the guides of the third embodiment of the guide device;
FIG. 9 shows an enlarged sectional view of the main parts of the same embodiment. DESCRIPTION OF SYMBOLS 1... Holding body, 3, 10... Control drive device, 14.
...Guide device, 15...First guide body, 16...Base, 19...Second guide body, 20...Intermediate guide body, 21
．． 24... Protrusion, 23. 26... Groove, 31... Light beam, 32... Light source, 34... Information medium, 35...
...Light spot, 39...Information track.

Claims

[Scope of utility model registration request]

A holder is provided with an optical device for irradiating a light beam from a light source onto an information track on an information medium as a light spot, and control is performed to move the holder in different directions in order to perform tracking control and focus control of the light spot. In an optical head having a drive device, a first guide member fixed to the holder, a second guide member fixed to the base, and an intermediate guide member interposed between the first guide member and the second guide member. The holding body is supported on a base via a guide device,
On each of the contact surfaces of the intermediate guide body, the first guide body, and the second guide body, a protrusion is formed on the - side and a groove for slidingly guiding the protrusion is formed on the other side. An optical head characterized in that the directions are formed to match the different control directions of the holder.