• Laser & Optoelectronics Progress
  • Vol. 58, Issue 1, 106002 (2021)
Zhao Taifei1、2、*, Ma Zhuang1, and Li Xingshan3
Author Affiliations
  • 1Faculty of Automation and Information Engineering, Xi''an University of Technology, Xi''an, Shaanxi 710048, China
  • 2Shaanxi Civil-Military Integration Key Laboratory of Intelligence Collaborative Networks,Xi''an, Shaanxi 710000, China
  • 3System Research Institute of Hubei''s Space Technology Academe, Wuhan, Hubei 430040, China
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    DOI: 10.3788/LOP202158.0106002 Cite this Article Set citation alerts
    Zhao Taifei, Ma Zhuang, Li Xingshan. Optimal Layout of Light Source Based on LED with Small Divergence Angle[J]. Laser & Optoelectronics Progress, 2021, 58(1): 106002 Copy Citation Text show less
    Model of the indoor plane
    Fig. 1. Model of the indoor plane
    Model of the illuminance analysis
    Fig. 2. Model of the illuminance analysis
    Schematic diagram of traditional square matrix layout LED array distribution
    Fig. 3. Schematic diagram of traditional square matrix layout LED array distribution
    Optimal illuminance distribution of traditional square array layout
    Fig. 4. Optimal illuminance distribution of traditional square array layout
    Radiation diagram of Gaussian-like LED under different divergence angles. (a) 15°; (b) 30°
    Fig. 5. Radiation diagram of Gaussian-like LED under different divergence angles. (a) 15°; (b) 30°
    Schematic diagram of LED emission angle
    Fig. 6. Schematic diagram of LED emission angle
    Schematic diagram of the LED array distribution in a square room
    Fig. 7. Schematic diagram of the LED array distribution in a square room
    Normal coordinate map of the LED center of the No. 1 array in a square room
    Fig. 8. Normal coordinate map of the LED center of the No. 1 array in a square room
    Illuminance distribution of receiving plane in square room
    Fig. 9. Illuminance distribution of receiving plane in square room
    Schematic diagram of the distribution of LED arrays in a rectangular room
    Fig. 10. Schematic diagram of the distribution of LED arrays in a rectangular room
    Normal coordinate map of the LED center of the No. 1 array in a rectangular room
    Fig. 11. Normal coordinate map of the LED center of the No. 1 array in a rectangular room
    Illuminance distribution of receiving plane in rectangular room
    Fig. 12. Illuminance distribution of receiving plane in rectangular room
    Optical power distribution on the receiving plane of the traditional layout
    Fig. 13. Optical power distribution on the receiving plane of the traditional layout
    Optical power distribution on the receiving plane of Gaussian-like LED optimized layout. (a) Square room; (b) rectangular room
    Fig. 14. Optical power distribution on the receiving plane of Gaussian-like LED optimized layout. (a) Square room; (b) rectangular room
    SNR distribution on the receiving plane of the traditional layout
    Fig. 15. SNR distribution on the receiving plane of the traditional layout
    SNR distribution on the receiving plane of Gaussian-like LED optimized layout. (a) Square room; (b) rectangular room
    Fig. 16. SNR distribution on the receiving plane of Gaussian-like LED optimized layout. (a) Square room; (b) rectangular room
    BER distribution on the receiving plane of the traditional layout
    Fig. 17. BER distribution on the receiving plane of the traditional layout
    BER distribution on the receiving plane of Gaussian-like LED optimized layout. (a) Square room; (b) rectangular room
    Fig. 18. BER distribution on the receiving plane of Gaussian-like LED optimized layout. (a) Square room; (b) rectangular room
    ParameterValue
    Single optical power/W0.5
    Half power angle/(°)60
    Center luminous intensity/cd21.5
    Photodiode responsivity/(A·W-1)0.53
    Refractive index of a lens at a PD1.5
    Field of view at receiver/(°)70
    Photosensitive area size of PD/cm21
    Gain of an optical filter1
    Noise bandwidth factor0.562
    Reflectivity of wall0.8
    Background noise current/mA0.62
    Load resistance /kΩ10
    Equivalent noise bandwidth /MHz200
    Table 1. Simulation parameter of traditional layout
    Zhao Taifei, Ma Zhuang, Li Xingshan. Optimal Layout of Light Source Based on LED with Small Divergence Angle[J]. Laser & Optoelectronics Progress, 2021, 58(1): 106002
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