JPH01151418U - - Google Patents
Info
- Publication number
- JPH01151418U JPH01151418U JP4631288U JP4631288U JPH01151418U JP H01151418 U JPH01151418 U JP H01151418U JP 4631288 U JP4631288 U JP 4631288U JP 4631288 U JP4631288 U JP 4631288U JP H01151418 U JPH01151418 U JP H01151418U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- lens holder
- center
- detection device
- position detection
- 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
- 238000001514 detection method Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims 4
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000005484 gravity Effects 0.000 claims 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図は本考案の一実施例を示す要部斜視図、
第２図は従来の位置を検出する位置検出機構を設
けた概略構成を示す斜視図である。
１…保持ベース、２…対物レンズ保持部、３…
支軸、４…対物レンズ、９…位置検出手段、１５
…位置検出取付け部。
FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention;
FIG. 2 is a perspective view showing a schematic configuration provided with a conventional position detection mechanism for detecting a position. 1... Holding base, 2... Objective lens holding part, 3...
Support shaft, 4...Objective lens, 9...Position detection means, 15
...Position detection mounting part.
Claims (1)
下方向の摺動と、前記支軸の軸周りに回動自在に
支承された対物レンズ保持部と、この対物レンズ
保持部の前記支軸の軸線から離間する位置に光軸
が支軸の軸線にほぼ平行になるように対物レンズ
を配置し、前記対物レンズ保持部を前記支軸を中
心に回動且つ摺動させるための駆動手段を備え、
前記対物レンズ保持部の前記支軸を中心とする回
動変位量を検出する位置検出装置を備えた光ピツ
クアツプにおいて、前記位置検出装置の前記対物
レンズ保持部に取り付ける部材の筐体を、前記対
物レンズ保持部の筐体と一体に成形したことを特
徴とする光ピツクアツプの位置検出装置。 (2) 前記位置検出装置の前記対物レンズ保持部
に取り付ける部材の筐体を一体に成形した前記対
物レンズ保持部が、該対物レンズ保持部の対物レ
ンズの中心と回動の中心を結ぶ中心線上で対向配
置され、前記位置検出装置の筐体の重量を調節し
て前記対物レンズ保持部の回動の中心に重心を得
られるようにした請求項(1)記載の光ピツクアツ
プの位置検出装置。[Claims for Utility Model Registration] (1) An objective lens holder supported vertically on a support shaft vertically set on a holding base and rotatable around the axis of the support shaft; , the objective lens is arranged in a position of the objective lens holder at a position spaced apart from the axis of the spindle so that the optical axis is substantially parallel to the axis of the spindle, and the objective lens holder is rotated about the spindle. Equipped with a driving means for moving and sliding,
In an optical pickup equipped with a position detection device that detects the amount of rotational displacement of the objective lens holder about the support shaft, a housing of a member attached to the objective lens holder of the position detection device is attached to the objective lens holder. A position detection device for an optical pickup, characterized in that it is integrally molded with a housing of a lens holding part. (2) The objective lens holder, in which the housing of the member attached to the objective lens holder of the position detection device is integrally molded, is located on the center line connecting the center of the objective lens of the objective lens holder and the center of rotation. 2. The position detecting device for an optical pickup according to claim 1, wherein the center of gravity is set at the center of rotation of the objective lens holder by adjusting the weight of the casing of the position detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4631288U JPH01151418U (en) | 1988-04-06 | 1988-04-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4631288U JPH01151418U (en) | 1988-04-06 | 1988-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01151418U true JPH01151418U (en) | 1989-10-19 |
Family
ID=31272582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4631288U Pending JPH01151418U (en) | 1988-04-06 | 1988-04-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01151418U (en) |
-
1988
- 1988-04-06 JP JP4631288U patent/JPH01151418U/ja active Pending
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