发明名称 |
Semiconductor laser module, spatial optical transmission system and electronic appliance |
摘要 |
A highly sensitive and inexpensive spatial optical transmission system using an LD (Laser Diode) as a light source and making use of the characteristics of a light receiving element is provided. The system includes a laser chip (1) oscillating a laser beam, and a light receiving element (2) receiving and converting to an electric signal the laser beam emitted from the laser chip (1) and propagated through a space. The laser chip oscillates a laser beam having a wavelength of which absorption coefficient at the light receiving element (2) is in a range of 0.001 to 0.3 mu m<-1>. <IMAGE> |
申请公布号 |
EP1251607(B1) |
申请公布日期 |
2006.05.17 |
申请号 |
EP20020252736 |
申请日期 |
2002.04.18 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
SHIMONAKA, ATSUSHI |
分类号 |
H01S5/022;H01L31/0232;H01L31/105;H01L31/167;H01S5/00;H04B10/11;H04B10/40;H04B10/50;H04B10/60 |
主分类号 |
H01S5/022 |
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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