JPS62168121U - - Google Patents
Info
- Publication number
- JPS62168121U JPS62168121U JP5651586U JP5651586U JPS62168121U JP S62168121 U JPS62168121 U JP S62168121U JP 5651586 U JP5651586 U JP 5651586U JP 5651586 U JP5651586 U JP 5651586U JP S62168121 U JPS62168121 U JP S62168121U
- Authority
- JP
- Japan
- Prior art keywords
- glass
- optical
- center hole
- glass master
- 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
- 239000011521 glass Substances 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000015654 memory Effects 0.000 claims 1
Landscapes
- Manufacturing Optical Record Carriers (AREA)
Description
第１図は、本考案の光デイスク製造用ガラス原
盤の実施例を示す断面斜視図、第２図は第１図の
平面図、第３図は第２図のＡ―Ａ断面図、第４図
は従来のガラス原盤の縦断面図である。
１…ガラス原盤、２…凸部、３…凹部。
FIG. 1 is a cross-sectional perspective view showing an embodiment of the glass master for manufacturing optical disks of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. The figure is a longitudinal cross-sectional view of a conventional glass master disk. 1...Glass master, 2...Convex portion, 3...Concave portion.
Claims (1)
クのマスタリングに使用するガラス原盤において
中心穴を有し、前記中心穴内面に凹凸を有し、前
記凸部がガラス原盤表面に垂直な同一円筒面上に
あり、前記凹部はガラス表面側からガラス裏面側
へガラス外周方向への傾斜を有することを特徴と
する光デイスク製造用ガラス原盤。 A glass master disk used for mastering optical disks such as compact disks and optical memories has a center hole, the inner surface of the center hole has irregularities, and the convex portions are on the same cylindrical surface perpendicular to the surface of the glass master disk, and 1. A glass master for manufacturing an optical disk, wherein the recess has an inclination in the direction of the outer circumference of the glass from the front side of the glass to the back side of the glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5651586U JPS62168121U (en) | 1986-04-15 | 1986-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5651586U JPS62168121U (en) | 1986-04-15 | 1986-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62168121U true JPS62168121U (en) | 1987-10-24 |
Family
ID=30885388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5651586U Pending JPS62168121U (en) | 1986-04-15 | 1986-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62168121U (en) |
-
1986
- 1986-04-15 JP JP5651586U patent/JPS62168121U/ja active Pending