发明名称 OPTICAL PICKUP DEVICE
摘要 <P>PROBLEM TO BE SOLVED: To realize the miniaturization of a device capable of utilizing a plural ity of kinds of optical recording media. <P>SOLUTION: A laser element 10 for CD (compact disk) and a laser element 12 for DVD (digital video disk) are provided so as to be confronted with each other across and optical path merging means 60. In short, the laser element 10 for CD and the laser element 12 for DVD are provided at positions 180 degrees apart around the optical path merging means 60. Moreover, the distance between the laser element 10 and the laser element 12 is shortened by reflecting the DVD laser beam twice in the means 60 to realize the miniaturization of an optical pickup device 50. <P>COPYRIGHT: (C)2003,JPO
申请公布号 JP2003272219(A) 申请公布日期 2003.09.26
申请号 JP20020069365 申请日期 2002.03.13
申请人 SANYO ELECTRIC CO LTD 发明人 YAMADA ITSUSEI;KANO YASUYUKI
分类号 G11B7/135;G11B7/125 主分类号 G11B7/135
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