JPH03121525U - - Google Patents
Info
- Publication number
- JPH03121525U JPH03121525U JP2752790U JP2752790U JPH03121525U JP H03121525 U JPH03121525 U JP H03121525U JP 2752790 U JP2752790 U JP 2752790U JP 2752790 U JP2752790 U JP 2752790U JP H03121525 U JPH03121525 U JP H03121525U
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive layer
- detector
- output
- record carrier
- measuring
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Manufacturing Optical Record Carriers (AREA)
Description
第１図は本考案の一実施例を示す概略構成図、
第２図、第３図、第４図は本考案を説明するため
の説明図、第５図は従来例を示す概略構成図であ
る。
１……光デイスク原盤、３，７，８，９，１５
，１６，１７……デイテクタ、４……制御回路部
、５……バルブ、１０……信号処理部。
FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
FIG. 2, FIG. 3, and FIG. 4 are explanatory diagrams for explaining the present invention, and FIG. 5 is a schematic configuration diagram showing a conventional example. 1...Optical disk master, 3, 7, 8, 9, 15
, 16, 17...Detector, 4...Control circuit section, 5...Valve, 10...Signal processing section.
Claims (1)
録担体の感光層を感光しない波長の第１のレーザ
光を照射して０次、１次、２次回折光強度を検出
し、所定の値で現像を停止する現像装置において
、前記感光層の表面に照射する第２のレーザ光源
と、該第２のレーザ光源の前記感光層からの反射
光量を検出する検出器と、該検出器出力より前記
感光層の膜厚を測定する手段と、前記記録担体の
現像状態における回折光強度を測定する信号処理
手段と、該信号処理手段の出力と前記膜厚測定手
段出力とで所定の現像状態を算出し現像を停止さ
せる制御手段とを有することを特徴とする光デイ
スク原盤の現像装置。 The record carrier exposed to the light beam is irradiated with a first laser beam having a wavelength that does not sensitize the photosensitive layer of the record carrier, and the 0th, 1st, and 2nd order diffracted light intensities are detected and the intensities are determined at a predetermined value. A developing device that stops development includes a second laser light source that irradiates the surface of the photosensitive layer, a detector that detects the amount of light reflected from the photosensitive layer of the second laser light source, and a detector that detects the amount of light reflected from the photosensitive layer based on the output of the detector. a means for measuring the film thickness of the photosensitive layer; a signal processing means for measuring the intensity of diffracted light in a developed state of the record carrier; and calculating a predetermined development state from the output of the signal processing means and the output of the film thickness measuring means. 1. A developing device for an optical disc master, comprising: a control means for stopping development.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2752790U JP2511736Y2 (en) | 1990-03-17 | 1990-03-17 | Optical disc master development device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2752790U JP2511736Y2 (en) | 1990-03-17 | 1990-03-17 | Optical disc master development device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03121525U true JPH03121525U (en) | 1991-12-12 |
| JP2511736Y2 JP2511736Y2 (en) | 1996-09-25 |
Family
ID=31530372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2752790U Expired - Lifetime JP2511736Y2 (en) | 1990-03-17 | 1990-03-17 | Optical disc master development device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2511736Y2 (en) |
-
1990
- 1990-03-17 JP JP2752790U patent/JP2511736Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2511736Y2 (en) | 1996-09-25 |
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