Near Infra-red Imaging Lens Assembly

申请公布号：US2011069378(A1)

申请号：US20100776820

申请日期：2010.05.10

申请公布日期：2011.03.24

申请人：

LARGAN PRECISION CO., LTD.

发明人：LIN MING CHING;CHANG CHIEN PANG;TANG HSIANG CHI;TSAI TSUNG HAN

分类号：G02B13/14;G02B13/04

主分类号：G02B13/14

摘要：This invention provides an NIR imaging lens assembly comprising a lens element with refractive power made of a visible-light-absorbable material, and a filter or a filter film formed on one lens element with refractive power for filtering out infrared light, wherein the number of lens elements with refractive power in the NIR imaging lens assembly is N, and wherein N≧2. The above lens arrangement allows light in a specific NIR wavelength range to pass through the lens assembly, thereby reducing interferences or influences from light in the other wavelength ranges. As a result, the resolution of the imaging lens assembly is improved, and its total track length is reduced effectively so that the entire lens system can be compact.

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