Design of a Long Distance Zoom Lens for Iris Recognition

  • Xiaoyu LvEmail author
  • Wenzhe Liao
  • Kaijun Yi
  • Junxiong Gao
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10996)


This paper presents a zoom lens for iris recognition to solve the problem of narrow working range with fixed size of iris image. The lens with a wide and long working range and high resolution images with the same iris size in different work distance was designed. An 2.6× long distance zoom lens was designed which includes 35~91 mm focal length, work distance from 750 mm to 1910 mm, less than 0.5% distortion, 3.5 working F number, 9.5 mm image diameter, 780 nm~890 nm wavelength of operating spectrum. At 166 lp/mm, the lens can capture iris image over all field of view with MTF > 0.3.


Zoom lens Iris recognition Wide and long working range 


  1. 1.
    Burge, M.J., Bowyer, K.W. (eds.).: Handbook of Iris Recognition. Springer, London (2013).
  2. 2.
    Liao, W., Yi, K., Gao, J., Lv, X., Wang, J.: Design of a wide working range lens for iris recognition. In: You, Z., et al. (eds.) CCBR 2016. LNCS, vol. 9967, pp. 339–348. Springer, Cham (2016). Scholar
  3. 3.
    Yu, D., Tan, H.: Engineering Optics. China Machine Press, China (2006)Google Scholar
  4. 4.
    Cavanagh, Roger (29 May 2003). “Parfrocal Lenses”. Archived from the original on 07 October 2007. Accessed 18 Nov 2007Google Scholar
  5. 5.
    Iris Image Quality Standard, SC 37 N 3331. ISO/IEC 29794-6 Annex A (2009)Google Scholar
  6. 6.
    1/2.7-Inch Digital Image Sensor.
  7. 7.
    Laikin, M.: Lens Design, Forth Edition. China Machine Press, China (2011)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Xiaoyu Lv
    • 1
    Email author
  • Wenzhe Liao
    • 1
  • Kaijun Yi
    • 1
  • Junxiong Gao
    • 1
  1. 1.Wuhan Hongshi Technologies Co., LTDWuhanChina

Personalised recommendations