发明授权
- 专利标题： Semiconductor laser apparatus for optical head
- 专利标题（中）： 光头用半导体激光装置
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申请号： US041140申请日： 1987-04-22
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公开(公告)号： US4772784A公开(公告)日： 1988-09-20
- 发明人: You Yoshitoshi , Yoshiyuki Matsumoto
- 申请人： You Yoshitoshi , Yoshiyuki Matsumoto
- 申请人地址： JPX Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-92410 19860423
- 主分类号： G02B1/10
- IPC分类号： G02B1/10 ; G11B7/09 ; G11B7/135 ; H01L31/12 ; H01S5/022 ; H01S5/026 ; G11B7/12
摘要：
A semiconductor laser apparatus having a semiconductor laser diode for radiating a laser beam, a photodetector formed on a semiconductor substrate, a prism having a first plane for introducing the laser beam to a reflecting substance and introducing the beam reflected by the reflecting substance to the photodetector and a second plane facing to the photodetector, and a coating layer formed on the boundary between the semiconductor substrate and the prism, having a refractive index such that the laser beam incident from the first plane other than the laser beam reflected by the reflecting substance is inhibited from reaching the photodetector.
公开/授权文献
- USD377563S Fishing rod support 公开/授权日：1997-01-28