JPS6218831U - - Google Patents
Info
- Publication number
- JPS6218831U JPS6218831U JP11001985U JP11001985U JPS6218831U JP S6218831 U JPS6218831 U JP S6218831U JP 11001985 U JP11001985 U JP 11001985U JP 11001985 U JP11001985 U JP 11001985U JP S6218831 U JPS6218831 U JP S6218831U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- groove
- light source
- pitch
- measuring device
- 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 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Manufacturing Optical Record Carriers (AREA)
Description
第１図は本考案に係るピツチ測定機の一例を説
明した正面図、第２図は入射角度と回折角度との
関係を説明した図、第３図は特定条件下における
溝ピツチと回折角度との関係を説明した図である
。
５…ターンテーブル、８…光源、Ｓ…センサ、
Ｍ２…モータ、Ｌ１…一次回折光。
Fig. 1 is a front view illustrating an example of the pitch measuring device according to the present invention, Fig. 2 is a diagram illustrating the relationship between the incident angle and the diffraction angle, and Fig. 3 is a diagram illustrating the relationship between the groove pitch and the diffraction angle under specific conditions. FIG. 5... Turntable, 8... Light source, S... Sensor,
M2...Motor, L1 ...First-order diffracted light.
Claims (1)
、 光デイスクを支持して回転させる手段と、 上記支持された光デイスクの溝部にレーザ光が
照射される様に設定された光源と、 上記溝部から放出される一次回折光の光路上に
配置された光センサを有することを特徴とする光
デイスク用ピツチ測定機。[Scope of Claim for Utility Model Registration] A means for inspecting the groove pitch of an optical disk, comprising a means for supporting and rotating the optical disk, and a setting so that a laser beam is irradiated onto the groove of the supported optical disk. What is claimed is: 1. A pitch measuring device for an optical disk, comprising: a light source having a light source; and a light sensor disposed on an optical path of first-order diffracted light emitted from the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11001985U JPS6218831U (en) | 1985-07-18 | 1985-07-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11001985U JPS6218831U (en) | 1985-07-18 | 1985-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6218831U true JPS6218831U (en) | 1987-02-04 |
Family
ID=30988650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11001985U Pending JPS6218831U (en) | 1985-07-18 | 1985-07-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6218831U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02247840A (en) * | 1989-03-20 | 1990-10-03 | Nec Corp | Optical disk substrate |
| JPH03198225A (en) * | 1989-12-26 | 1991-08-29 | Sanyo Electric Co Ltd | Optical reproducing device |
-
1985
- 1985-07-18 JP JP11001985U patent/JPS6218831U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02247840A (en) * | 1989-03-20 | 1990-10-03 | Nec Corp | Optical disk substrate |
| JPH03198225A (en) * | 1989-12-26 | 1991-08-29 | Sanyo Electric Co Ltd | Optical reproducing device |
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