高精度虹膜识别光学镜头的研制

刘雅丽, 王敏, 黄木旺

刘雅丽, 王敏, 黄木旺. 高精度虹膜识别光学镜头的研制[J]. 应用光学, 2012, 33(3): 575-579.
引用本文: 刘雅丽, 王敏, 黄木旺. 高精度虹膜识别光学镜头的研制[J]. 应用光学, 2012, 33(3): 575-579.
LIU Ya-li, WANG Min, HUANG Mu-wang. Iris identification optical lens with high precision[J]. Journal of Applied Optics, 2012, 33(3): 575-579.
Citation: LIU Ya-li, WANG Min, HUANG Mu-wang. Iris identification optical lens with high precision[J]. Journal of Applied Optics, 2012, 33(3): 575-579.

高精度虹膜识别光学镜头的研制

详细信息
    通讯作者:

    刘雅丽(1986-),女,山西河津人,硕士研究生,主要从事精密光学仪器的研发和设计。

  • 中图分类号: TN942.2

Iris identification optical lens with high precision

  • 摘要: 针对虹膜识别系统中难于获取高分辨率的虹膜图像问题,设计一款高精度虹膜图像采集摄像镜头。镜头焦距14.2 mm, 畸变小于0.15%,像方数值孔径为0.26,像面直径为5.35 mm,工作距离130 mm,物像共轭距为150 mm。光学系统可获得高分辨率图像,在0.7视场光学传递函数MTF在120 lp/mm时大于30%。镜头由4片球面透镜构成,结构简单,适合产业化生产,各项光学指标检测结果达到设计要求。
    Abstract: To obtain high-resolution iris images in the iris recognition system, a high-precision iris image acquisition camera lens is designed, whose focal length is 14.2 mm, distortion is less than 0.15%, image space numerical aperture (NA) is 0.26, image diameter is 5.35 mm, working distance is 130 mm and objectimage conjugate distance is 150 mm. This optical system can acquire high-resolution image with MTF 0.3 at 120 lp/mm over 0.7 field of view. The camera lens is composed of 4 spherical lenses, which is simple and suitable for industrial production. All the optical performances of productions are consistent with the predicted results analyzed by Zemax.
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出版历程
  • 刊出日期:  2012-05-14

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