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发明名称
透镜系及使用透镜系之投影机
摘要
本发明提供一种将来自DMD等之光阀改变光之反射方向所形成之图像放大投射至萤幕等之高性能且透镜口径小的透镜系,特征为系由从放大侧依序是全体大致构成远焦光学系之第1透镜群及全体具正折射力之第2透镜群所构成,前述第2透镜群是由自放大侧依序配置全体具负折射力之第2a透镜群及全体具正折射力之第2b透镜群所构成,且因应目的,在前述第2透镜群之缩小侧附加建构有于DMD等光阀附近配置1片正透镜而构成之第3透镜群。
申请公布号
TW200844629
申请公布日期
2008.11.16
申请号
TW096147146
申请日期
2007.12.11
申请人
尾计算机股份有限公司
发明人
川上悦郎;手岛康幸
分类号
G03B21/14(2006.01);G02B13/18(2006.01);G02B15/20(2006.01)
主分类号
G03B21/14(2006.01)
代理机构
代理人
何金涂;丁国隆
主权项
地址
日本
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