JPH02132314U - - Google Patents
Info
- Publication number
- JPH02132314U JPH02132314U JP4025389U JP4025389U JPH02132314U JP H02132314 U JPH02132314 U JP H02132314U JP 4025389 U JP4025389 U JP 4025389U JP 4025389 U JP4025389 U JP 4025389U JP H02132314 U JPH02132314 U JP H02132314U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- base
- optical axis
- storage body
- optical
- 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 9
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Description
第１図は本考案の一実施例に係るＣＤプレーヤ
の光ピツクアツプの概略を示す分解斜視図、第２
図は第１図の組立状態の斜視図、第３図は第２図
の−線矢視の断面図、第４図はＣＤプレーヤ
の３ビーム方式の光ピツクアツプの光学系を示す
斜視図、第５図は回折格子を示す斜視図、第６図
は回折格子により形成される３つのビームスポツ
トを説明するための図である。
１１……ベース、１４……対物レンズ、１５…
…レンズホルダ、１９，２０……ヨーク、２１…
…マグネツト、２２……丸穴、２３……収納体、
２３ａ……上端部。
FIG. 1 is an exploded perspective view schematically showing an optical pickup of a CD player according to an embodiment of the present invention;
The figure is a perspective view of the assembled state of FIG. 1, FIG. 3 is a sectional view taken along the - line arrow in FIG. FIG. 5 is a perspective view showing the diffraction grating, and FIG. 6 is a diagram for explaining three beam spots formed by the diffraction grating. 11...base, 14...objective lens, 15...
...Lens holder, 19, 20...Yoke, 21...
...Magnet, 22...Round hole, 23...Storage body,
23a... Upper end.
Claims (1)
ング補正方向及びフオーカシング補正方向に補正
駆動させる対物レンズアクチユエータと、光源か
らのレーザー光を３つのビームに分割して前記対
物レンズに送る回折格子などから成る光学系が収
納された収納体と、前記対物レンズアクチユエー
タ及び収納体を前記対物レンズの光軸と前記光学
系の光軸が一致するように保持するベースとを備
え、前記ベースには、前記対物レンズの光軸を中
心とする丸穴が穿設されているとともに、前記収
納体の一方の端部は、前記光学系の光軸を中心と
し且つ前記ベースの丸穴に嵌合される円筒状に形
成されており、その円筒状端部が前記ベースの丸
穴内で回動されて前記回折格子の位置が調整され
た状態で、前記ベースに固定されていることを特
徴とする光デイスクプレーヤの光ピツクアツプ。 An optical system consisting of an objective lens actuator that corrects and drives a lens holder that holds an objective lens in the tracking correction direction and focusing correction direction, and a diffraction grating that splits the laser light from the light source into three beams and sends them to the objective lens. a storage body in which the system is housed; and a base that holds the objective lens actuator and the storage body so that the optical axis of the objective lens and the optical axis of the optical system coincide; A round hole centered on the optical axis of the objective lens is bored, and one end of the storage body has a cylindrical hole centered on the optical axis of the optical system and fitted into the round hole of the base. An optical disc player, characterized in that the cylindrical end portion is fixed to the base with the cylindrical end thereof being rotated within a circular hole of the base to adjust the position of the diffraction grating. light pick-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4025389U JPH02132314U (en) | 1989-04-04 | 1989-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4025389U JPH02132314U (en) | 1989-04-04 | 1989-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02132314U true JPH02132314U (en) | 1990-11-02 |
Family
ID=31549885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4025389U Pending JPH02132314U (en) | 1989-04-04 | 1989-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02132314U (en) |
-
1989
- 1989-04-04 JP JP4025389U patent/JPH02132314U/ja active Pending