发明名称 |
SUPPORTO DI REGISTRAZIONE CON STRUTTURA D INFORMAZIONE ATTA A RIFLETTERE LE RADIAZIONI E LEGGIBILE OTTICAMENTE PARTICOLARMENTE PER SEGNALI TELEVISIVI |
摘要 |
A record carrier is described having an optically readable radiation-reflecting information structure, which comprises trackwise arranged information areas which, in the track direction and transverse to the track direction, are spaced from each other by intermediate areas. It is demonstrated that if the angle of inclination between the walls of the first areas and the normal to the record carrier has one value between 30 DEG and 65 DEG for a satisfactorily reproducible record carrier, the geometrical distance between the plane of the information areas and the plane of the intermediate areas should have one value between (165/N) nanometers and (270/N) nanometers, N being the refractive index of a transparent medium which is disposed between the first and the second plane. |
申请公布号 |
IT7968787(D0) |
申请公布日期 |
1979.09.07 |
申请号 |
IT19790068787 |
申请日期 |
1979.09.07 |
申请人 |
N.V.PHILIPS GLOEILAMPENFABRIEKEN |
发明人 |
DIL JAN GERARD;JACOBS BERNARDUS ANTONIUS JOHANNUS |
分类号 |
G11B7/007;G11B7/12;G11B7/24;(IPC1-7):G11B/ |
主分类号 |
G11B7/007 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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