发明名称 |
Semiconductor laser apparatus and optical pickup apparatus |
摘要 |
A semiconductor laser apparatus comprises a semiconductor substrate, a semiconductor laser which is fixed on the semiconductor substrate and a prism having a slanted plane. The prism is placed such that its slanted plane faces a side across from the semiconductor laser. The apparatus also includes an optical detector for monitoring which is formed on the surface of the semiconductor substrate. The surface is covered by the prism. The following are formed on the slanted plane of the prism: a reflection region on which the surface is processed for reflecting a part of an emitted light beam from the semiconductor laser and a transmissive refraction region on which the surface is processed such that the remaining part of the emitted light beam is transmitted and refracted to be guided to a light receiving plane of the optical detector for monitoring.
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申请公布号 |
US6184512(B1) |
申请公布日期 |
2001.02.06 |
申请号 |
US19980082385 |
申请日期 |
1998.05.20 |
申请人 |
SANKYO SEIKI MFG. CO., LTD. |
发明人 |
HIGASHIURA KAZUO;HAYASHI YOSHIO;TAKEDA TADASHI |
分类号 |
G11B7/125;G01J1/04;G01J1/42;G11B7/135;(IPC1-7):G01J1/20 |
主分类号 |
G11B7/125 |
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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