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

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Abstract

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.

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Acknowledgements

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

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Authors and Affiliations

  1. Ordnance Engineering Department, Naval University of Engineering, Wuhan, 430033, Hubei, China

    Dianhong Liu, Xiaohui Zhang, Shang Zhang & Hongwei Han

  2. Dalian Naval Academy, Dalian, 116018, Liaoning, China

    Dianhong Liu

  3. Taiyuan Satellite Launch Center, Taiyuan, 030000, Shanxi, China

    Chen Chen

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  1. Dianhong Liu
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  2. Xiaohui Zhang
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  3. Chen Chen
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  4. Shang Zhang
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  5. Hongwei Han
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Correspondence to Xiaohui Zhang.

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Liu, D., Zhang, X., Chen, C. et al. Fast double free-form LED lens design for tiny rectangular light field with high efficiency. Opt Rev 26, 349–355 (2019). https://doi.org/10.1007/s10043-019-00515-5

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