JPH0476609U - - Google Patents
Info
- Publication number
- JPH0476609U JPH0476609U JP11982190U JP11982190U JPH0476609U JP H0476609 U JPH0476609 U JP H0476609U JP 11982190 U JP11982190 U JP 11982190U JP 11982190 U JP11982190 U JP 11982190U JP H0476609 U JPH0476609 U JP H0476609U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- bearing
- cover
- drive device
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Description
第１図乃至第３図は、本考案の実施例を示す図
面であり、第１図は、その概略横断面図であり、
第２図は、概略縦断面図であり、第３図は、軸受
け附近を示す要部断面図である。第４図は、従来
の対物レンズ駆動装置の概略縦断面図であり、第
５図は、概略横断面図である。
１……対物レンズ駆動装置、１０ａ，２０ａ…
…円筒状部分。
1 to 3 are drawings showing an embodiment of the present invention, and FIG. 1 is a schematic cross-sectional view thereof,
FIG. 2 is a schematic longitudinal cross-sectional view, and FIG. 3 is a cross-sectional view of a main part showing the vicinity of the bearing. FIG. 4 is a schematic longitudinal cross-sectional view of a conventional objective lens driving device, and FIG. 5 is a schematic cross-sectional view. 1...Objective lens drive device, 10a, 20a...
...Cylindrical part.
Claims (1)
する対物レンズを有し、該対物レンズをフオーカ
ス方向及びトラツキング方向に駆動する軸摺動型
の対物レンズ駆動装置において、カバー及びベー
ス間に対物レンズを収納するとともに、回転軸及
び軸受けの両端面を覆うように前記カバー及びベ
ースの軸受け対向面を円筒状に形成することによ
り、軸受け及び回転軸に塵が侵入しないようにし
たことを特徴とする対物レンズ駆動装置。 In a shaft-sliding objective lens drive device that has an objective lens that focuses a light beam on a rotating optical disk surface and drives the objective lens in a focusing direction and a tracking direction, the objective lens is disposed between a cover and a base. The bearing-facing surfaces of the cover and base are formed into a cylindrical shape so as to cover both end surfaces of the rotating shaft and the bearing, thereby preventing dust from entering the bearing and the rotating shaft. Objective lens drive device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11982190U JPH0476609U (en) | 1990-11-14 | 1990-11-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11982190U JPH0476609U (en) | 1990-11-14 | 1990-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0476609U true JPH0476609U (en) | 1992-07-03 |
Family
ID=31867756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11982190U Pending JPH0476609U (en) | 1990-11-14 | 1990-11-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0476609U (en) |
-
1990
- 1990-11-14 JP JP11982190U patent/JPH0476609U/ja active Pending
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