发明名称 |
Head assembly for optical disc |
摘要 |
An optical head assembly for recording information on an optical disc or for taking out information already recorded, the optical head assembly including a semiconductor substrate and a dielectric light conducting layer formed on the substrate, the light conducting layer being internally formed with optical elements for converging laser beam from a laser beam source onto the optical disc and directing the reflected beam from the optical disc surface toward a photo detector. Output signal from the photo detector is used for reading information and also for allowing the optical head assembly to trace a track on the optical disc.
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申请公布号 |
US4718052(A) |
申请公布日期 |
1988.01.05 |
申请号 |
US19850781993 |
申请日期 |
1985.09.30 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
KONDO, MITSUSHIGE;SHIKAMA, SHINSUKE;KONO, KEIZO;FUJITA, TERUO |
分类号 |
G11B7/08;G11B7/09;(IPC1-7):G11B7/095 |
主分类号 |
G11B7/08 |
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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