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发明名称
光资讯记录媒体用之物镜
摘要
本发明之课题在于提供,可记录或是再生蓝光雷射光碟HD、DVD(DigitalVideoDisk,数位影音光碟)及CD(CompactDisk,光碟)的物镜。本发明之解决手段为提供,基准透镜2a及密接透镜2b被密接而接合,密接透镜2b的材质与基准透镜2a的材质不同,基准透镜的镜面与密接透镜2b的镜面具备非球面形状,并且基准透镜具备聚光功能,而密接透镜具备赋予正的折射力的区域及负的折射力的区域之光资讯记录媒体用之物镜。
申请公布号
TW200414177
申请公布日期
2004.08.01
申请号
TW092135092
申请日期
2003.12.10
申请人
旭硝子股份有限公司
发明人
关根实
分类号
G11B7/135
主分类号
G11B7/135
代理机构
代理人
林志刚
主权项
地址
日本
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