专利名称：OPTICAL FOCUSING SYSTEM发明人：Junqiang GONG申请号：US14621363申请日：20150212
公开号：US20150241663A1公开日：20150827
专利附图：
摘要：An optical focusing system, including a focusing lens group, a fixed lens group,and an imaging surface. The focusing lens group is disposed at a forefront of an objectspace, or a rearmost of an image space, or between lenses of the fixed lens group.
申请人：Union Optech Co., Ltd.
地址：Zhongshan CN
国籍：CN
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