JPS648215U - - Google Patents
Info
- Publication number
- JPS648215U JPS648215U JP10071487U JP10071487U JPS648215U JP S648215 U JPS648215 U JP S648215U JP 10071487 U JP10071487 U JP 10071487U JP 10071487 U JP10071487 U JP 10071487U JP S648215 U JPS648215 U JP S648215U
- Authority
- JP
- Japan
- Prior art keywords
- diffraction grating
- elastic protrusion
- rigid body
- grating holder
- optical head
- 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 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Head (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図は本考案の第１実施例の回折格子ホルダ
断面を示すもので第３図の―線断面図、第２
図は同回折格子ホルダの斜視図、第３図は光ヘツ
ドの回折格子ホルダ近傍の光軸方向の断面図、第
４図は第２実施例を示す回折格子ホルダの斜視図
、第５図は同平面図、第６図は第３実施例を示す
もので回折格子ホルダ近傍の断面図、第７図は同
平面図、第８図は一般的な光ヘツドの概略構成図
、第９図は従来の回折格子調整機構を示す図、第
１０図は第９図のＸ―Ｘ線断面図である。
１……光ヘツドベース、３……回折格子、２０
，３０，４０……回折格子ホルダ、２０ａ，３０
ａ……嵌合部、２０ｃ，４０ｃ……剛体部、２０
ｄ，３０ｃ，４０ｂ……第１弾性突出部、２１…
…第１調整ネジ、２２……第２調整ネジ、３０ｄ
……第２弾性突出部。
Fig. 1 shows a cross section of the diffraction grating holder of the first embodiment of the present invention.
The figure is a perspective view of the same diffraction grating holder, Figure 3 is a sectional view in the optical axis direction near the diffraction grating holder of the optical head, Figure 4 is a perspective view of the diffraction grating holder showing the second embodiment, and Figure 5 is a perspective view of the diffraction grating holder. The same plan view, FIG. 6 shows the third embodiment and is a sectional view of the vicinity of the diffraction grating holder, FIG. 7 is the same plan view, FIG. A diagram showing a conventional diffraction grating adjustment mechanism, FIG. 10 is a sectional view taken along the line X--X in FIG. 9. 1... Optical head base, 3... Diffraction grating, 20
, 30, 40... Diffraction grating holder, 20a, 30
a... Fitting part, 20c, 40c... Rigid body part, 20
d, 30c, 40b...first elastic protrusion, 21...
...First adjustment screw, 22...Second adjustment screw, 30d
...Second elastic protrusion.
Claims (1)
ルダを正逆に回転させることができる２つの箇所
の少なくとも一方に、回折格子ホルダを回転させ
る方向に弾性変形可能な第１弾性突出部を一体に
形成し、他方には、剛体部、または、回折格子ホ
ルダを回転させる方向に弾性変形可能な第２弾性
突出部を一体に形成し、光ヘツドベース側には、
前記第１弾性突出部を正回転方向に押すことので
きる第１調整ネジ、および、前記剛体部または第
２弾性突出部を逆回転方向に押すことのできる第
２調整ネジをそれぞれ螺合させたことを特徴とす
る光ヘツドの回折格子調整機構。 (2) 上記回折格子ホルダは、光ヘツドベースの
円筒穴部に回転可能に嵌合する嵌合部と、この嵌
合部と一体で、フランジ形状の一部を切り欠いて
形成した、割り形ばね状の第１弾性突出部、およ
び、他方の剛体部とを持ち、前記第１弾性突出部
および剛体部を上記２つの調整ネジで互いに逆回
転方向に押すようにしたことを特徴とする実用新
案登録請求の範囲第１項記載の光ヘツドの回折格
子調整機構。[Claims for Utility Model Registration] (1) Elastic deformation in the direction in which the diffraction grating holder is rotated at at least one of the two locations on the side of the diffraction grating holder where the diffraction grating holder can be rotated in forward and reverse directions. A second elastic protrusion that can be elastically deformed in the direction of rotating the rigid body part or the diffraction grating holder is integrally formed on the other side. ,
A first adjustment screw that can push the first elastic protrusion in the forward rotation direction and a second adjustment screw that can push the rigid body part or the second elastic protrusion in the reverse rotation direction are screwed together. A diffraction grating adjustment mechanism for an optical head, characterized by the following. (2) The above-mentioned diffraction grating holder includes a fitting part that rotatably fits into the cylindrical hole of the optical head base, and a split spring integrally formed with the fitting part by cutting out a part of the flange shape. A utility model characterized in that the first elastic protrusion and the other rigid body have a shape, and the first elastic protrusion and the rigid body are pushed in mutually opposite rotational directions by the two adjustment screws. A diffraction grating adjustment mechanism for an optical head according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10071487U JPS648215U (en) | 1987-06-30 | 1987-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10071487U JPS648215U (en) | 1987-06-30 | 1987-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS648215U true JPS648215U (en) | 1989-01-18 |
Family
ID=31329038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10071487U Pending JPS648215U (en) | 1987-06-30 | 1987-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS648215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08306061A (en) * | 1995-05-10 | 1996-11-22 | Sankyo Seiki Mfg Co Ltd | Fixing structure of diffraction grating of optical pickup |
-
1987
- 1987-06-30 JP JP10071487U patent/JPS648215U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08306061A (en) * | 1995-05-10 | 1996-11-22 | Sankyo Seiki Mfg Co Ltd | Fixing structure of diffraction grating of optical pickup |
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