Optical pickup device using a holographic optical element and an amplifier,申请号US19910762420-传众专利搜索

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发明名称	Optical pickup device using a holographic optical element and an amplifier
摘要
申请公布号	US5272329(A)	申请公布日期	1993.12.21
申请号	US19910762420	申请日期	1991.09.19
申请人	SHARP KABUSHIKI KAISHA	发明人	NAGAHAMA, TOSHIYA;YAMADA, SHIGEHIRO;YOKOGAWA, NARUICHI;SEIKE, YASUSHI;YOSHIFUSA, KOJI
分类号	G01J1/02;G11B7/12;G11B7/13;G11B7/135;(IPC1-7):H01J3/14	主分类号	G01J1/02
代理机构		代理人
主权项
地址

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