JPS6340814U - - Google Patents
Info
- Publication number
- JPS6340814U JPS6340814U JP13500186U JP13500186U JPS6340814U JP S6340814 U JPS6340814 U JP S6340814U JP 13500186 U JP13500186 U JP 13500186U JP 13500186 U JP13500186 U JP 13500186U JP S6340814 U JPS6340814 U JP S6340814U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- support shaft
- axis
- lens holder
- coil
- 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
- 230000003287 optical effect Effects 0.000 claims 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図Ａはこの考案にかかる対物レンズ駆動装
置の上面図、同図ＢはそのＨ―Ｈ断面図、同図Ｃ
は、可動部の斜視図、第２図Ａは従来の対物レン
ズ駆動装置の上面図、同図ＢはそのＧ―Ｇ断面図
、同図Ｃは可動部の斜視図である。
１……対物レンズ、２……対物レンズ保持体、
３……フオーカスコイル、４……トラツキングコ
イル、６……支持軸、７……ヨーク、８……磁石
、９……バランサ。
Figure 1A is a top view of the objective lens drive device according to this invention, Figure 1B is a sectional view taken along line HH, Figure 1C is
2 is a perspective view of a movable part, FIG. 2A is a top view of a conventional objective lens drive device, FIG. 2B is a sectional view taken along line GG, and FIG. 2C is a perspective view of the movable part. 1...Objective lens, 2...Objective lens holder,
3... Focus coil, 4... Tracking coil, 6... Support shaft, 7... Yoke, 8... Magnet, 9... Balancer.
Claims (1)
自在にかつその支持軸の軸線方向に摺動自在に支
持される対物レンズ保持体と、対物レンズ保持体
の前記支持軸の軸線から離間する位置に光軸がそ
の支持軸の軸線にほぼ平行になるように保持され
る対物レンズとを備える対物レンズ駆動装置にお
いて、前記対物レンズ保持体の周部に巻回された
フオーカスコイル又は、フオーカスコイルとトラ
ツキングコイルを電磁気学的に駆動する磁気回路
の磁気間隙中に前記対物レンズ保持体が介在しな
いようにしたことを特徴とする対物レンズ駆動装
置。 an objective lens holder rotatably supported by a support shaft around the axis of the support shaft and slidably in the axial direction of the support shaft; and an objective lens holder at a position spaced apart from the axis of the support shaft. In an objective lens drive device comprising an objective lens held so that the optical axis is substantially parallel to the axis of the support shaft, a focus coil or a focus coil wound around the circumference of the objective lens holder. An objective lens driving device characterized in that the objective lens holder is not interposed in a magnetic gap between a magnetic circuit that electromagnetically drives a tracking coil and a tracking coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13500186U JPS6340814U (en) | 1986-09-03 | 1986-09-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13500186U JPS6340814U (en) | 1986-09-03 | 1986-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6340814U true JPS6340814U (en) | 1988-03-17 |
Family
ID=31036768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13500186U Pending JPS6340814U (en) | 1986-09-03 | 1986-09-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6340814U (en) |
-
1986
- 1986-09-03 JP JP13500186U patent/JPS6340814U/ja active Pending