JPH0434644U - - Google Patents
Info
- Publication number
- JPH0434644U JPH0434644U JP7611790U JP7611790U JPH0434644U JP H0434644 U JPH0434644 U JP H0434644U JP 7611790 U JP7611790 U JP 7611790U JP 7611790 U JP7611790 U JP 7611790U JP H0434644 U JPH0434644 U JP H0434644U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- objective lens
- observation device
- rotation
- disk
- 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 5
- 230000001427 coherent effect Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 1
Landscapes
- Testing Of Optical Devices Or Fibers (AREA)
- Manufacturing Optical Record Carriers (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
本考案の原理図、第３図は光デイスクのピツト列
簡略図、第４図はビデオデイスクの信号例、第５
図は同期信号部の観察像例、第６図は欠陥部の観
察像例である。
１……ビデオデイスク、２……ピツト、３……
レーザ光発生器、４……レーザ光、５……観察装
置、６……回転制御機構、７……ステージ、８…
…モータ制御装置、９，１０……移動機構、１１
……ＴＶ画面、１２……メモリ、１３……入力装
置、１４……ＣＰＵである。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram of the principle of the present invention, FIG. 3 is a simplified diagram of a pit row of an optical disk, FIG. 4 is an example of a video disk signal, and FIG.
The figure shows an example of an observed image of a synchronizing signal part, and FIG. 6 shows an example of an observed image of a defective part. 1...Video disk, 2...Pitsuto, 3...
Laser light generator, 4... Laser light, 5... Observation device, 6... Rotation control mechanism, 7... Stage, 8...
...Motor control device, 9, 10...Movement mechanism, 11
...TV screen, 12...memory, 13...input device, 14...CPU.
Claims (1)
ンズの合焦近傍で配置された被測定デイスク表面
に対し、レーザ光等のコヒーレントな平行光をト
ラツクの接線方向に対し平行でかつ斜方向より照
射する光学系と、対物レンズの光軸に対し垂直方
向で回転中心となし回転軸をｘ，ｙ軸に移動せし
めメモリ装置に入力されたデータの位置を位置出
しする回転制御機構を有しメモリ指定したスポツ
トを順次観察することを特徴とする光デイスクの
欠陥観察装置。 Coherent parallel light such as a laser beam is irradiated obliquely and parallel to the tangential direction of the track onto the surface of the disk to be measured, which is placed near the focus of an objective lens mounted on an observation device such as an optical microscope. It has an optical system with a rotation center perpendicular to the optical axis of the objective lens, and a rotation control mechanism that moves the rotation axis along the x and y axes to locate the data input to the memory device. An optical disk defect observation device characterized in that it sequentially observes spots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7611790U JPH0434644U (en) | 1990-07-19 | 1990-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7611790U JPH0434644U (en) | 1990-07-19 | 1990-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0434644U true JPH0434644U (en) | 1992-03-23 |
Family
ID=31617302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7611790U Pending JPH0434644U (en) | 1990-07-19 | 1990-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0434644U (en) |
-
1990
- 1990-07-19 JP JP7611790U patent/JPH0434644U/ja active Pending
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