Optical Review

, Volume 26, Issue 4, pp 349–355 | Cite as

Fast double free-form LED lens design for tiny rectangular light field with high efficiency

  • Dianhong Liu
  • Xiaohui ZhangEmail author
  • Chen Chen
  • Shang Zhang
  • Hongwei Han
Regular Paper


We present a fast step-by-step method to design double free-form LED lens quickly; tiny rectangular light field with high efficiency can be achieved. Lens construction just need to derive two contour lines according to geometrical optics analysis. Lenses with different design angles are constructed according to the method, tiny rectangular light field from 2.3° × 1.2° to 6° × 10° can be achieved for a 1 mm × 1 mm LED source, optical simulation efficiency is higher than 83%, besides uniformity is higher than 79%. A manufactured lens proves the validity of the method.


Geometric optical design Nonimaging optics Illumination design Light-emitting diodes 



This work was supported by the Navy Scientific Research Foundation of China (no. 417210973).


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Copyright information

© The Optical Society of Japan 2019

Authors and Affiliations

  • Dianhong Liu
    • 1
    • 2
  • Xiaohui Zhang
    • 1
    Email author
  • Chen Chen
    • 3
  • Shang Zhang
    • 1
  • Hongwei Han
    • 1
  1. 1.Ordnance Engineering DepartmentNaval University of EngineeringWuhanChina
  2. 2.Dalian Naval AcademyDalianChina
  3. 3.Taiyuan Satellite Launch CenterTaiyuanChina

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