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
Application number
JP11001985U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP11001985U priority Critical patent/JPS6218831U/ja
Publication of JPS6218831U publication Critical patent/JPS6218831U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Optical Record Carriers (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】 光デイスクの溝ピツチを検査する手段であつて
、 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.
JP11001985U 1985-07-18 1985-07-18 Pending JPS6218831U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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