Xiaoting Zhang, Chujia Liu, Yu Qi, Zhihui Cai, Fengtie Wu, Qiren Zhuang. Design of Lens Coupler with Uniform Energy Distribution Based on LED Source and Polymer Optical Fiber Bundle[J]. Acta Optica Sinica, 2018, 38(2): 0208001
- Acta Optica Sinica
- Vol. 38, Issue 2, 0208001 (2018)
Fig. 1. Principle diagram of lens coupler
Fig. 2. Design diagram of paraxial incident plane of lens coupler
Fig. 3. Intensity distribution curves of LED with a primary lens
Fig. 4. Design diagram of paraxial exit surface of lens coupler
Fig. 5. Working principle diagram of free-form total reflection surface
Fig. 6. Ray tracing light path of paraxial incident surface of lens coupler to point light source
Fig. 7. Energy distribution of point light source on the receiving screen after passing through the paraxial incident surface. (a) s=7 mm; (b) s=8 mm; (c) s=9 mm; (d) s=10 mm
Fig. 8. Energy distribution of the 3535 LED light source on the receiving screen after passing through the paraxial incident surface
Fig. 9. (a) Output light energy distribution curve and (b) compensation curve of the 3535 LED light source passing through the paraxial refracting surface
Fig. 10. 3D model of lens coupler
Fig. 11. Output intensity distribution of lens couple. (a) x-y plane; (b) cross section at y=0
Fig. 12. Final light intensity distribution curve
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Table 1. Comparison of main performances between LED-POFB coupler and TIR lens[18]
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