Image pick-up lens system

专利名称：Image pick-up lens system

发明人：Ji-Yong Zeng,Ying-Bai Yan,Guo-Fan Jin,Zhuo

Wang,Min-Qiang Wang

申请号：US11018711申请日：20041220

公开号：US20060056072A1公开日：20060316

专利附图：

摘要：An image pick-up lens system includes an aperture stop (), a first lens (), and asecond lens () having a concave surface on an object side. The aperture stop, the first lensand the second lens are aligned in that order from the object side to an image side. The

first lens has positive refracting power and has a diffraction grating formed on a convexsurface on the image side. The second lens has positive refracting power. The systemsatisfies the following condition: (1) 1.4

申请人：Ji-Yong Zeng,Ying-Bai Yan,Guo-Fan Jin,Zhuo Wang,Min-Qiang Wang

地址：Beijing CN,Beijing CN,Beijing CN,Beijing CN,Beijing CN

国籍：CN,CN,CN,CN,CN

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