Journal of Applied Optics, Volume. 43, Issue 4, 701(2022)
Study on measurement technology of ultra-low brightness
Figures & Tables(9)
Fig. 2. Composition and working principle of ultra-low brightness meter
Fig. 6. Schematic of measuring luminance source by ultra-low brightness meter
Table 1. Experimental data of temperature control principle of PMT refrigeration scheme
View tableView in ArticleTable 1. Experimental data of temperature control principle of PMT refrigeration scheme
时间/min 温度/℃ 电流/A 备注 0 22.6 10 − 1 2.8 9.9 − 2 −6 9.8 − 3 −11.8 9.7 − 4 −15.6 9.6 − 5 −18.4 9.5 − 6 −20.3 9.4 5′50″时达到-20 ℃ 7 −21.9 9.3 − 8 −19.85 9.2 8′50″时达到平衡 9 20.02 9.1 温度稳定 10 −20.05 9 温度稳定
Table 2. Brightness experimental results of ultra-low brightness meter
View tableView in ArticleTable 2. Brightness experimental results of ultra-low brightness meter
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/% 1 3.727 3.684 2.65 2 3.812 3 3.745 4 3.539 5 3.763 6 3.604 7 3.756 8 3.641 9 3.535 10 3.718
Table 3. List of ultra-low brightness photometer measurement uncertainties
View tableView in ArticleTable 3. List of ultra-low brightness photometer measurement uncertainties
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 0.05 B u2 成像面上的照度引入的不确定度 2.0 B u3 光学系统的透过率引入的不确定度 1.0 B u4 透镜与发光面的距离引入的不确定度 0.1 B u5 孔径直径引入的不确定度 0.5 B u6 测量重复性引入的不确定度 0.9 A
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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
Paper Information
Category: OPTICAL METROLOGY AND MEASUREMENT
Received: May. 20, 2022
Accepted: --
Published Online: Aug. 10, 2022
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