| 发明名称 |
INRICHTING VOOR HET UITLEZEN VAN EEN REGISTRATIEDRAGER WAAROP INFORMATIE IS AANGEBRACHT IN EEN OPTISCH UITLEESBARE STRUCTUUR. |
| 摘要 |
<p>An apparatus is described for reading a record carrier on which information is stored in an optically readable structure. Between a radiation source and an objective system, a polarization-sensitive beam splitter and a lambda /4 plate are disposed. The optic axis of the lambda /4 plate is perpendicular to the end faces, so that the plate may be thick and may be rotated in its own plane.</p> |
| 申请公布号 |
NL176314(B) |
申请公布日期 |
1984.10.16 |
| 申请号 |
NL19740002170 |
申请日期 |
1974.02.15 |
| 申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN TE EINDHOVEN. |
发明人 |
GIJSBERTUS BOUWHUIS TE BREUGEL;DR. IR. CAREL ARTHUR JAN SIMONS TE EINDHOVEN. |
| 分类号 |
H04N5/85;G02B27/00;G06K7/10;G11B7/08;G11B7/09;G11B7/1356;G11B7/1365;(IPC1-7):11B7/00 |
主分类号 |
H04N5/85 |
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