JPH01133223U - - Google Patents
Info
- Publication number
- JPH01133223U JPH01133223U JP2246588U JP2246588U JPH01133223U JP H01133223 U JPH01133223 U JP H01133223U JP 2246588 U JP2246588 U JP 2246588U JP 2246588 U JP2246588 U JP 2246588U JP H01133223 U JPH01133223 U JP H01133223U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- movable body
- fixed body
- movable
- drive mechanism
- 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 4
- 230000003287 optical effect Effects 0.000 claims 2
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の対物レンズ駆動装置の一実施
例を示す斜視図、第２図はその検出手段部分の平
面図、第３図はその光源の側面図であり、第４図
は従来の対物レンズ駆動装置の斜視図である。
１１……可動体、１２……対物レンズ、１３…
…固定体、１４……支持機構、２１……駆動機構
、３１……検出手段、３２……光源、３３……光
検出器。
Fig. 1 is a perspective view showing an embodiment of the objective lens driving device of the present invention, Fig. 2 is a plan view of its detection means, Fig. 3 is a side view of its light source, and Fig. 4 is a conventional one. It is a perspective view of an objective lens drive device. 11...Movable body, 12...Objective lens, 13...
... Fixed body, 14 ... Support mechanism, 21 ... Drive mechanism, 31 ... Detection means, 32 ... Light source, 33 ... Photodetector.
Claims (1)
持機構を介して対物レンズの光軸に沿つたフオー
カシング方向及び対物レンズの光軸と直角のトラ
ツキング方向に移動可能に支持した固定体と、こ
の固定体と可動体の間に設けられ可動体をフオー
カシング方向及びトラツキング方向に移動させる
駆動機構と、固定体をトラツキング方向に移動す
る際に固定体に対する可動体のトラツキング方向
の位置を検出して駆動機構を制御する検出手段を
備えた対物レンズ駆動装置において、 検出手段は、可動体に光源を配設するとともに
、この光源に対する複数の光検出器を固定体にト
ラツキング方向に並設して成ることを特徴とする
対物レンズ駆動装置。[Claims for Utility Model Registration] A movable body provided with an objective lens, and this movable body movable via a support mechanism in the focusing direction along the optical axis of the objective lens and in the tracking direction perpendicular to the optical axis of the objective lens. a fixed body supported by the fixed body, a drive mechanism provided between the fixed body and the movable body to move the movable body in the focusing direction and the tracking direction, and a drive mechanism that moves the movable body with respect to the fixed body when moving the fixed body in the tracking direction. In an objective lens drive device equipped with a detection means that detects a position in a direction and controls a drive mechanism, the detection means includes a light source disposed on a movable body and a plurality of photodetectors for this light source that are tracked on a fixed body. An objective lens driving device characterized in that the objective lens driving device is arranged in parallel in the direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2246588U JPH01133223U (en) | 1988-02-23 | 1988-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2246588U JPH01133223U (en) | 1988-02-23 | 1988-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01133223U true JPH01133223U (en) | 1989-09-11 |
Family
ID=31240613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2246588U Pending JPH01133223U (en) | 1988-02-23 | 1988-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01133223U (en) |
-
1988
- 1988-02-23 JP JP2246588U patent/JPH01133223U/ja active Pending