JPS63113216U - - Google Patents
Info
- Publication number
- JPS63113216U JPS63113216U JP213587U JP213587U JPS63113216U JP S63113216 U JPS63113216 U JP S63113216U JP 213587 U JP213587 U JP 213587U JP 213587 U JP213587 U JP 213587U JP S63113216 U JPS63113216 U JP S63113216U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- driving device
- coil
- balancer
- magnetic field
- 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 3
- 230000005484 gravity Effects 0.000 claims 1
- 230000003993 interaction Effects 0.000 claims 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案一実施例としての対物レンズ駆
動装置の概略構成を示す斜視図、第２図は同じく
その平面図、第３図は同じくその断面図、第４図
は従来の対物レンズ駆動装置の一構成例を示す斜
視図、第５図は同じくその断面図、である。
１……対物レンズ、３……レンズホルダ、５，
６……トラツキングバネ、１０……中間部材、１
１，１２，１３，１４……フオーカスバネ、１８
……台座、２５……フオーカス調整用コイル、２
７，２８……トラツキング調整用コイル、３０…
…磁気部材。
Fig. 1 is a perspective view showing a schematic configuration of an objective lens driving device as an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view thereof, and Fig. 4 is a conventional objective lens driving device. FIG. 5 is a perspective view showing an example of the configuration of the device, and FIG. 5 is a sectional view thereof. 1...Objective lens, 3...Lens holder, 5,
6... Tracking spring, 10... Intermediate member, 1
1, 12, 13, 14...Focus spring, 18
...Pedestal, 25...Focus adjustment coil, 2
7, 28...Tracking adjustment coil, 30...
...Magnetic member.
Claims (1)
物レンズを、少なくとも該対物レンズの光軸に平
行なフオーカス方向に駆動する対物レンズ駆動装
置であつて、 前記対物レンズを保持するレンズホルダの一部
に、少なくともフオーカス調整用コイルを連設し
、該コイルを貫通する磁界を形成する磁性体を設
けると共に、 該磁界と前記コイルに流れる電流との相互作用
による前記フオーカス方向への力の作用部位を略
重心とするよう所定重量のバランサを前記レンズ
ホルダに連結してなる対物レンズ駆動装置。 ２ バランサとレンズホルダとの連結は、対物レ
ンズの光軸と直交するトラツキング方向へ可撓な
板バネによつてなされた実用新案登録請求の範囲
第１項記載の対物レンズ駆動装置。[Claims for Utility Model Registration] 1. An objective lens driving device that drives an objective lens that converges a light spot on an optical disk in at least a focus direction parallel to the optical axis of the objective lens, the objective lens being held by the objective lens. At least a focus adjustment coil is arranged in series in a part of the lens holder, and a magnetic body is provided to form a magnetic field that passes through the coil, and the magnetic field is adjusted in the focus direction by interaction with the current flowing through the coil. An objective lens driving device comprising a balancer having a predetermined weight connected to the lens holder so that the center of gravity is approximately at the point where the force is applied. 2. The objective lens driving device according to claim 1, wherein the balancer and the lens holder are connected by a flexible plate spring in a tracking direction perpendicular to the optical axis of the objective lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP213587U JPS63113216U (en) | 1987-01-09 | 1987-01-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP213587U JPS63113216U (en) | 1987-01-09 | 1987-01-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63113216U true JPS63113216U (en) | 1988-07-21 |
Family
ID=30780688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP213587U Pending JPS63113216U (en) | 1987-01-09 | 1987-01-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63113216U (en) |
-
1987
- 1987-01-09 JP JP213587U patent/JPS63113216U/ja active Pending