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Acta Optica Sinica, Volume. 40, Issue 8, 0823001(2020)

Spectral Optimization of a Mixed White Light-Emitting Diode (LED) Cluster Comprising a Red/Green/Blue/Cyan/Yellow/Warm White LED

Huijuan Tian1,2、*, Yang Hu1,2, Tao Chen1,2, Jianxin Liu4, Minpeng Cai2,3, and Tao Guan2,3
Author Affiliations
  • 1School of Electronics and Information Engineering, Tiangong University, Tianjin, 300387, China
  • 2Engineering Research Center of Ministry of Education on High Power Solid State Lighting Application System, Tianjin, 300387, China
  • 3Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, School of Electrical Engineering & Automation, Tiangong University, Tianjin, 300387, China;
  • 4Tianjin Chengke Transmission Electromechanical Technology Co., Ltd., Tianjin, 300384, China
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    Figures&Tables (11)
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    References (15)
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    Figures & Tables(11)
    Light source module used in the experiment. (a) R/G/B/C/Y/WW LED lamp bead layout; (b) R/G/B/C/Y/WW LED physical drawing of light source

    Fig. 1. Light source module used in the experiment. (a) R/G/B/C/Y/WW LED lamp bead layout; (b) R/G/B/C/Y/WW LED physical drawing of light source

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    R/G/B/C/Y/WW LED module drive circuit schematic

    Fig. 2. R/G/B/C/Y/WW LED module drive circuit schematic

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    Light source parameters of R/G/B/C/Y/WW LED. (a) Chromaticity coordinate of each LED; (b) relative spectral power distribution of the LED

    Fig. 3. Light source parameters of R/G/B/C/Y/WW LED. (a) Chromaticity coordinate of each LED; (b) relative spectral power distribution of the LED

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    Relationship between duty cycle and luminous flux of R/G/B/C/Y/WW LED. (a) ΦR--DR; (b) ΦG--DG; (c) ΦB--DB; (d) ΦWW--DWW; (e) ΦC--DC; (f) ΦY--DY

    Fig. 4. Relationship between duty cycle and luminous flux of R/G/B/C/Y/WW LED. (a) ΦR--DR; (b) ΦG--DG; (c) ΦB--DB; (d) ΦWW--DWW; (e) ΦC--DC; (f) ΦY--DY

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    Relationship between Ra and r1 at Tc=2700 K and r2=[0.05, 1.00]. (a) r3=0.05; (b) r3=0.10; (c) r3=0.15

    Fig. 5. Relationship between Ra and r1 at Tc=2700 K and r2=[0.05, 1.00]. (a) r3=0.05; (b) r3=0.10; (c) r3=0.15

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    Relationship between Ra and r1 at Tc=4000 K and r2=[0.05, 1.00]. (a) r3=0.15; (b) r3=0.20; (c) r3=0.25

    Fig. 6. Relationship between Ra and r1 at Tc=4000 K and r2=[0.05, 1.00]. (a) r3=0.15; (b) r3=0.20; (c) r3=0.25

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    Relationship between Ra and r1 at Tc=5500 K and r2=[0.05, 1.00]. (a) r3=0.15; (b) r3=0.20; (c) r3=0.25

    Fig. 7. Relationship between Ra and r1 at Tc=5500 K and r2=[0.05, 1.00]. (a) r3=0.15; (b) r3=0.20; (c) r3=0.25

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    Relationship between Ra and r1 at Tc=7000 K and r2=[0.05, 1.00]. (a) r3=0.10; (b) r3=0.15; (c) r3=0.20

    Fig. 8. Relationship between Ra and r1 at Tc=7000 K and r2=[0.05, 1.00]. (a) r3=0.10; (b) r3=0.15; (c) r3=0.20

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    Lighting effect photos of R/G/B/ C/Y/WW LED module. (a) Tc=2700 K; (b) Tc=4000 K; (c) Tc=5500 K; (d) Tc=7000 K

    Fig. 9. Lighting effect photos of R/G/B/ C/Y/WW LED module. (a) Tc=2700 K; (b) Tc=4000 K; (c) Tc=5500 K; (d) Tc=7000 K

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    • Table 1. R/G/B/C/Y/WW lamp bead parameters in the experiment

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      Table 1. R/G/B/C/Y/WW lamp bead parameters in the experiment

      ChannelxyLuminous flux /lmPower /W
      R0.68250.3174561.442.27
      G0.15290.67968542.88
      B0.13840.0566220.952.94
      C0.11950.1128146.32.96
      Y0.57680.4221170.72.11
      WW0.43630.4103584.412.74

    • Table 2. Comparison of the set and measured values at luminous flux Φ=500 lm

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      Table 2. Comparison of the set and measured values at luminous flux Φ=500 lm

      Set Tc/KMeasured Φ /lmRelative error of Φ /%Measured power /WMeasured luminous efficiency /(lm·W-1)Measured Tc/KRelative error of Tc/%Set RaMeasured RaRelative error of Ra/%
      2700499.210.163.33150.0026471.9696.495.21.24
      4000506.711.343.37150.2440701.7597.096.10.93
      5500505.531.113.32152.4054201.4597.396.21.13
      7000505.761.153.45146.8169271.0497.496.41.03
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    Huijuan Tian, Yang Hu, Tao Chen, Jianxin Liu, Minpeng Cai, Tao Guan. Spectral Optimization of a Mixed White Light-Emitting Diode (LED) Cluster Comprising a Red/Green/Blue/Cyan/Yellow/Warm White LED[J]. Acta Optica Sinica, 2020, 40(8): 0823001

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    Paper Information

    Category: Optical Devices

    Received: Oct. 22, 2019

    Accepted: Dec. 31, 2019

    Published Online: Apr. 13, 2020

    The Author Email: Huijuan Tian (tianhjgx@126.com)

    DOI:10.3788/AOS202040.0823001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology