发明名称 |
Optische opneeminrichting. |
摘要 |
An optical pickup device which can obtain a stable reproduction signal by increasing the numerical aperture of an objective lens includes an objective lens facing a disc, a light source for radiating light to the disc via the objective lens, a beam splitter provided between the light source and objective lens for directing the light reflected from the disc in a path different from that of the light travelled from the light source, a photodetector for detecting the light reflected from the disc and travelled via the beam splitter, and a diaphragm provided between the beam splitter and light source and having a predetermined numerical aperture. |
申请公布号 |
NL1004964(A1) |
申请公布日期 |
1997.07.14 |
申请号 |
NL19971004964 |
申请日期 |
1997.01.09 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
JANG-HOON YOO;CHUL-WOO LEE;KYUNG-HWA RIM |
分类号 |
G02B13/00;G11B7/00;G11B7/125;G11B7/135;(IPC1-7):G11B7/135 |
主分类号 |
G02B13/00 |
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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