JPH0431417U - - Google Patents
Info
- Publication number
- JPH0431417U JPH0431417U JP7078790U JP7078790U JPH0431417U JP H0431417 U JPH0431417 U JP H0431417U JP 7078790 U JP7078790 U JP 7078790U JP 7078790 U JP7078790 U JP 7078790U JP H0431417 U JPH0431417 U JP H0431417U
- Authority
- JP
- Japan
- Prior art keywords
- lens holder
- support member
- elastic support
- center
- magnet
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図Ａは一実施例としての光ピツクアツプ装
置の平面図、同図Ｂは変位と力の関係を示す説明
図、第２図は第１図に示す光ピツクアツプ装置の
外観斜視図、第３図ａ，ｂは動作状態を示す説明
図、第４図は従来の光ピツクアツプ装置の説明図
である。
１０……対物レンズ、１１……レンズホルダ、
１２……マグネツト、１３ａ……支持部材、１４
……ヨーク、１５，１６……巻線。
1A is a plan view of an optical pickup device as an example, FIG. 1B is an explanatory diagram showing the relationship between displacement and force, FIG. 2 is an external perspective view of the optical pickup device shown in FIG. 1, and FIG. Figures a and b are explanatory diagrams showing operating states, and Fig. 4 is an explanatory diagram of a conventional optical pickup device. 10...Objective lens, 11...Lens holder,
12...Magnet, 13a...Supporting member, 14
...Yoke, 15, 16...Winding.
Claims (1)
ンズホルダが、固定部から線状に延びる弾性支持
部材により可動状態に支持され、レンズホルダに
対し前記弾性支持部材による支持側と逆の側から
対向する対向部とレンズホルダとの間にて一方に
は補正駆動用の巻線が他方にはマグネツトが設け
られ且つ、このマグネツトによりレンズホルダが
前記対向部の方向へ磁気吸引されている光ピツク
アツプ装置であつて、 前記磁気吸引力をＦ、レンズホルダの中心が対
向部の中心からずれる方向へ変位したときの変位
量をａ、このときにマグネツトの磁気力によりレ
ンズホルダを前記中心からさらに遠ざける方向へ
変位させようとする磁気的斥力をｆ、前記弾性支
持部材の支持長をＬとした場合に、ｆ／ａ＝Ｆ／
Ｌの関係式が少なくとも近似値的に成立するよう
に各値が設定されていることを特徴とする光ピツ
クアツプ装置。[Claims for Utility Model Registration] A lens holder that holds an objective lens facing an optical disk is supported in a movable state by an elastic support member linearly extending from a fixed part, and the side supported by the elastic support member with respect to the lens holder is A correction drive winding is provided on one side and a magnet is provided on the other between the opposing part and the lens holder, which face each other from the opposite side, and this magnet causes the lens holder to be magnetically attracted in the direction of the opposing part. In this optical pickup device, the magnetic attraction force is F, the amount of displacement when the center of the lens holder is displaced from the center of the opposing part is a, and at this time, the magnetic force of the magnet moves the lens holder. If f is the magnetic repulsive force that attempts to displace the elastic support member in a direction further away from the center, and L is the support length of the elastic support member, then f/a=F/
An optical pickup device characterized in that each value is set so that a relational expression of L holds true at least approximately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7078790U JP2529393Y2 (en) | 1990-07-02 | 1990-07-02 | Optical pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7078790U JP2529393Y2 (en) | 1990-07-02 | 1990-07-02 | Optical pickup device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0431417U true JPH0431417U (en) | 1992-03-13 |
| JP2529393Y2 JP2529393Y2 (en) | 1997-03-19 |
Family
ID=31607242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7078790U Expired - Lifetime JP2529393Y2 (en) | 1990-07-02 | 1990-07-02 | Optical pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2529393Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06336850A (en) * | 1992-11-02 | 1994-12-06 | Nippon Amusuko:Kk | Two-tiered parking system |
-
1990
- 1990-07-02 JP JP7078790U patent/JP2529393Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06336850A (en) * | 1992-11-02 | 1994-12-06 | Nippon Amusuko:Kk | Two-tiered parking system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2529393Y2 (en) | 1997-03-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |