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发明名称
投影镜头
摘要
一种投影镜头,包括一第一透镜群、一第二透镜群与一第三透镜群,第二透镜群是位于第一透镜群与第三透镜群之间,且第一透镜群、第二透镜群与第三透镜群的屈光度依序为负、负、正。此外,第一透镜群包括一非球面透镜,而第二透镜群包括一第一透镜与一第二透镜。第三透镜群包括依序排列的一第三透镜、一第四透镜、一第五透镜、一第六透镜、一第七透镜、一第八透镜、一第九透镜、一第十透镜、一第十一透镜以及一第十二透镜。此投影镜头具有生产成本低的优点。
申请公布号
TWI410671
申请公布日期
2013.10.01
申请号
TW098110536
申请日期
2009.03.30
申请人
扬明光学股份有限公司 新竹市新竹科学工业园区新安路7号
发明人
康尹豪;王国权;苏元宏
分类号
G02B13/18
主分类号
G02B13/18
代理机构
代理人
郭晓文 台北市文山区罗斯福路6段407号4楼
主权项
地址
新竹市新竹科学工业园区新安路7号
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