JPH0216419U - - Google Patents
Info
- Publication number
- JPH0216419U JPH0216419U JP9373688U JP9373688U JPH0216419U JP H0216419 U JPH0216419 U JP H0216419U JP 9373688 U JP9373688 U JP 9373688U JP 9373688 U JP9373688 U JP 9373688U JP H0216419 U JPH0216419 U JP H0216419U
- Authority
- JP
- Japan
- Prior art keywords
- lens holder
- press
- support member
- pair
- elastic support
- 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 description 6
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案による光ピツクアツプの補正駆
動装置の一実施例を示す平面図、第２図はその
―線断面図、第３図は第１図の弾性支持部材の
圧入部がレンズホルダの凹部に圧入された状態を
拡大して示す平面図、第４図は従来の光ピツクア
ツプの補正駆動装置を示す平面図、第５図は第４
図の弾性支持部材の圧入部がレンズホルダの凹部
に圧入された状態を拡大して示す平面図、第６図
はレンズホルダが支持されている振動系の振動特
性を示す線図である。
１……対物レンズ、２……レンズホルダ、２ａ
……凹部、２ｂ……支持面、３……弾性支持部材
、３ａ……圧入部、３ｂ……弾性変形部、３ｅ…
…加圧面、３ｇ……突条、７……トラツキングコ
イル、８……マグネツト。
FIG. 1 is a plan view showing an embodiment of the optical pickup correction drive device according to the present invention, FIG. 2 is a cross-sectional view taken along the line ``--'', and FIG. FIG. 4 is an enlarged plan view showing a state in which it is press-fitted into a recess, FIG. 4 is a plan view showing a conventional correction drive device for an optical pickup, and FIG.
FIG. 6 is an enlarged plan view showing a state in which the press-fitted portion of the elastic support member is press-fitted into the recessed portion of the lens holder, and FIG. 6 is a diagram showing the vibration characteristics of the vibration system in which the lens holder is supported. 1...Objective lens, 2...Lens holder, 2a
... recess, 2b ... support surface, 3 ... elastic support member, 3a ... press-fitting section, 3b ... elastic deformation section, 3e ...
...Pressure surface, 3g...Protrusion, 7...Tracking coil, 8...Magnet.
Claims (1)
いるレンズホルダが弾性支持部材によつて支持さ
れており、この弾性支持部材に形成された断面積
の小さい変形部を支点として対物レンズの光軸と
交叉する方向へレンズホルダが揺動自在に支持さ
れているとともに、レンズホルダを揺動方向へ動
作させる磁気駆動機構が設けられている光ピツク
アツプの補正駆動装置において、前記弾性支持部
材にはレンズホルダの凹部内に嵌着圧入される圧
入部が形成されており、この圧入部は、断面積の
小さい前記弾性変形部から等角度にて広がる一対
の加圧面を有し、またレンズホルダに形成されて
いる凹部内面には、前記圧入部の一対の加圧面が
当るように等角度にて広がる一対の支持面が形成
されており且つ、弾性支持部材の圧入部の外面と
レンズホルダの凹部内面の少なくとも一方には圧
入時の収縮によつて前記一対の加圧面を各々に対
向する支持面に均等に加圧するための突部が形成
されていることを特徴とする光ピツクアツプの補
正駆動装置。 A lens holder on which an objective lens facing an optical disk is mounted is supported by an elastic support member, and a deformed part with a small cross-sectional area formed in this elastic support member is used as a fulcrum to cross the optical axis of the objective lens. In a correction drive device for an optical pickup in which a lens holder is swingably supported in a direction in which the lens holder is pivoted, and a magnetic drive mechanism is provided to move the lens holder in the swing direction, the elastic support member has a lens holder attached to the lens holder. A press-fitting part is formed to be press-fitted into the recess, and the press-fitting part has a pair of pressing surfaces that spread out at equal angles from the elastic deformation part having a small cross-sectional area, and is formed on the lens holder. A pair of support surfaces are formed on the inner surface of the recess, which spread at equal angles so that the pair of pressurizing surfaces of the press-fitting section touch, and at least the outer surface of the press-fitting section of the elastic support member and the inner surface of the recess of the lens holder are formed. A correction drive device for an optical pickup, characterized in that one of the protrusions is formed on one of the protrusions to uniformly press the pair of pressurizing surfaces against the supporting surfaces facing each other by contraction during press-fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9373688U JPH0216419U (en) | 1988-07-15 | 1988-07-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9373688U JPH0216419U (en) | 1988-07-15 | 1988-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0216419U true JPH0216419U (en) | 1990-02-01 |
Family
ID=31318211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9373688U Pending JPH0216419U (en) | 1988-07-15 | 1988-07-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0216419U (en) |
-
1988
- 1988-07-15 JP JP9373688U patent/JPH0216419U/ja active Pending
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