• Journal of Applied Optics
  • Vol. 43, Issue 4, 701 (2022)
Yu'nan SUN, Feng CAO, Juncheng ZHAO, Ruixing LIU..., Le WANG, Jing GAO and Ke YANG|Show fewer author(s)
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    DOI: 10.5768/JAO202243.0403002 Cite this Article
    Yu'nan SUN, Feng CAO, Juncheng ZHAO, Ruixing LIU, Le WANG, Jing GAO, Ke YANG. Study on measurement technology of ultra-low brightness[J]. Journal of Applied Optics, 2022, 43(4): 701 Copy Citation Text show less
    Schematic of imaging brightness meter
    Fig. 1. Schematic of imaging brightness meter
    Composition and working principle of ultra-low brightness meter
    Fig. 2. Composition and working principle of ultra-low brightness meter
    Schematic of nonlinear correction
    Fig. 3. Schematic of nonlinear correction
    Schematic of refrigeration chamber sealing scheme
    Fig. 4. Schematic of refrigeration chamber sealing scheme
    Schematic of TEC heat dissipation scheme
    Fig. 5. Schematic of TEC heat dissipation scheme
    Schematic of measuring luminance source by ultra-low brightness meter
    Fig. 6. Schematic of measuring luminance source by ultra-low brightness meter
    时间/min温度/℃电流/A备注
    022.610
    12.89.9
    2−69.8
    3−11.89.7
    4−15.69.6
    5−18.49.5
    6−20.39.45′50″时达到-20 ℃
    7−21.99.3
    8−19.859.28′50″时达到平衡
    920.029.1温度稳定
    10−20.059温度稳定
    Table 1. Experimental data of temperature control principle of PMT refrigeration scheme
    测量次数亮度/×10−6 cd/m2亮度平均值/×10−6 cd/m2相对实验标准偏差/%
    13.7273.6842.65
    23.812
    33.745
    43.539
    53.763
    63.604
    73.756
    83.641
    93.535
    103.718
    Table 2. Brightness experimental results of ultra-low brightness meter
    测量不确定度分量ui测量不确定度来源测量不确定度/%评定方法
    u1透镜焦距引入的不确定度0.05B
    u2成像面上的照度引入的不确定度2.0B
    u3光学系统的透过率引入的不确定度1.0B
    u4透镜与发光面的距离引入的不确定度0.1B
    u5孔径直径引入的不确定度0.5B
    u6测量重复性引入的不确定度0.9A
    Table 3. List of ultra-low brightness photometer measurement uncertainties
    Yu'nan SUN, Feng CAO, Juncheng ZHAO, Ruixing LIU, Le WANG, Jing GAO, Ke YANG. Study on measurement technology of ultra-low brightness[J]. Journal of Applied Optics, 2022, 43(4): 701
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