Optimization design of two-group night vision zoom lenses

Chuen Lin Tien, Chun Hao Huang, Tsai Wei Lin, Wen Shing Sun, Chern Sheng Lin

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


An optimization design for mechanically compensated two-group zoom lenses for night vision applications is presented. Two optimization algorithms combined with a merit function and the damped least-squares method are proposed and used for optimization of each lens-group. This optical lens design should be good enough to meet the performance requirements for an image intensifier tube. The proposed zoom system consists of a negative and a positive lens-group structure with one aspheric lens and seven glass lenses. The design result of zoom lenses includes spectral range of 600-900 nm, focal length range of 12-35 mm, zoom ratio of 2.9, the maximum full-field angle of 74° and f-number of 1.9-2.3. The total length of the zoom system is less than 200 mm. The design results show that the best performance can be obtained by our proposed approach.

Original languageEnglish
Pages (from-to)809-815
Number of pages7
JournalIndian Journal of Pure and Applied Physics
Issue number12
StatePublished - Dec 2011


  • Night vision
  • Optical lens design
  • Optimization
  • Zoom lenses


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