情報ライブラリー

照明技術資料

照明関連の計算法

光束法による照度計算

固有照明率

固有照明率とは器具の配光の形だけを考え、器具効率100%としたときの照明率です。
したがって実際に用いる照明率(U)は、次のようになります。


U = η・Uo

ここに η:器具効率


分類番号
BZ-1Iθ∝cos4θ
BZ-2Iθ∝cos3θ
BZ-3Iθ∝cos2θ
BZ-4Iθ∝cos1.5θ
BZ-5Iθ∝cosθ
BZ-6Iθ∝(1+2cosθ)
BZ-7Iθ∝(2+cosθ)
BZ-8Iθ∝constant
BZ-9Iθ∝(1+sinθ)
BZ-10Iθ∝sinθ

表2.2 BZ分類による固有照明表

分類照明率表
反射率
REFLECTANCE
(%)
室指数
ROOM INDEXES
(Kr)
天井
(ρc)

(ρw)

(ρf)
0.600.801.001.251.502.002.503.004.005.007.0010.00

BZ-1


S=1.0H

7070100.730.810.870.900.940.970.991.011.031.041.051.06
50100.650.740.800.850.890.930.960.981.001.021.031.05
30100.590.690.760.810.850.900.930.960.981.001.021.04
5070100.710.790.850.880.910.950.970.991.001.011.021.03
50100.640.730.790.830.870.920.940.960.981.001.011.03
30100.590.680.750.800.840.890.920.940.970.981.001.02
3070100.690.770.830.860.890.930.950.960.980.991.001.01
50100.630.720.780.820.860.900.930.950.970.980.991.01
30100.590.680.750.790.830.880.910.930.950.970.991.00
0000.540.630.700.750.790.840.870.890.920.930.950.97

BZ-2


S=1.0H

7070100.680.770.830.870.910.950.980.991.021.031.041.05
50100.590.680.760.810.860.910.940.960.991.011.031.04
30100.530.630.710.760.810.870.910.930.970.991.011.03
5070100.660.740.810.850.890.930.950.970.991.001.021.03
50100.580.670.750.790.840.890.920.940.970.991.011.02
30100.520.620.700.750.800.860.900.920.950.970.991.01
3070100.640.720.790.830.870.910.930.950.970.981.001.01
50100.570.660.730.780.830.870.910.930.950.970.991.00
30100.520.620.690.740.790.850.880.910.940.950.980.99
0000.470.560.640.690.750.800.840.870.900.920.940.96

BZ-3


S=1.0H

7070100.620.710.780.830.870.920.950.971.001.021.031.05
50100.520.620.700.750.810.870.910.930.970.991.011.03
30100.450.550.640.690.750.820.870.900.940.971.001.02
5070100.600.690.760.300.850.900.930.950.970.991.011.02
50100.510.610.680.740.790.850.890.910.950.970.991.01
30100.450.550.630.690.740.810.850.880.920.950.981.00
3070100.580.670.730.780.820.870.900.920.950.970.981.00
50100.500.590.670.720.770.830.870.890.930.950.970.99
30100.440.540.620.680.730.800.840.870.910.930.960.98
0000.380.480.560.620.680.750.790.820.860.890.920.94

BZ-4


S=1.0H

7070100.590.680.750.800.850.900.930.960.991.001.021.04
50100.480.580.660.720.770.840.880.910.950.971.001.02
30100.410.510.590.650.710.790.840.870.920.950.981.01
5070100.560.650.720.770.820.870.910.930.960.981.001.01
50100.470.560.640.700.750.820.860.890.930.950.981.00
30100.400.500.580.640.700.780.820.860.900.930.960.99
3070100.540.630.700.750.790.850.880.900.930.950.970.99
50100.460.550.630.680.740.800.840.870.910.930.960.98
30100.400.490.570.630.690.760.810.840.890.910.950.97
0000.340.430.510.570.630.710.760.790.840.870.900.93

BZ-5


S=1.0H

7070100.550.640.710.770.810.870.910.930.970.991.011.03
50100.440.530.610.670.730.800.850.880.930.950.991.01
30100.360.450.530.600.660.740.800.840.890.920.960.99
5070100.530.610.680.730.780.840.880.900.940.960.991.00
50100.420.520.590.650.710.780.830.860.900.930.960.99
30100.350.450.530.590.650.730.780.820.870.900.940.97
3070100.510.590.650.710.750.810.850.880.910.930.960.98
50100.410.500.580.630.690.760.810.840.880.910.940.97
30100.350.440.520.580.640.720.770.800.850.890.920.95
0000.280.370.450.510.570.650.710.750.800.840.880.91

BZ-6


S=1.5H

7070100.520.620.680.740.780.830.870.900.930.950.981.01
50100.400.500.570.630.680.750.790.830.880.910.950.98
30100.320.420.490.550.600.680.730.770.830.860.910.95
5070100.500.590.650.700.740.800.820.860.900.920.950.98
50100.390.490.550.610.660.720.770.800.850.880.920.95
30100.320.410.480.540.590.660.720.750.810.840.890.93
3070100.470.560.620.670.710.760.800.830.870.890.920.95
50100.380.470.540.590.640.700.750.780.830.860.900.93
30100.310.410.470.530.580.650.700.740.790.840.870.91
0000.240.330.400.460.500.580.630.670.730.770.820.86

BZ-7


S=1.5H

7070100.490.580.650.700.740.800.840.870.910.930.960.99
50100.370.460.530.590.630.700.750.790.840.870.920.95
30100.280.370.440.500.550.630.680.720.780.820.880.92
5070100.470.550.610.660.700.760.800.830.870.900.930.96
50100.350.440.510.570.610.680.730.760.810.850.890.93
30100.280.360.430.490.540.610.660.700.760.800.850.90
3070100.440.520.580.630.670.730.760.790.830.860.900.93
50100.340.430.490.550.590.660.700.740.790.820.870.90
30100.270.360.420.480.520.600.650.690.740.780.830.88
0000.200.280.340.400.440.520.570.610.570.720.770.82

BZ-8


S=1.5H

7070100.480.560.620.680.720.780.920.850.890.920.950.98
50100.340.430.500.560.600.670.730.760.820.850.900.94
30100.260.340.410.470.510.590.650.690.750.800.850.90
5070100.450.530.590.640.680.740.760.810.850.880.910.95
50100.330.410.480.540.580.650.700.740.790.820.870.91
30100.250.530.400.450.500.570.630.670.730.780.830.88
3070100.420.500.560.600.640.700.740.770.810.840.880.91
50100.320.400.460.520.560.620.670.710.760.800.850.89
30100.250.320.390.440.490.560.610.650.710.760.810.86
0000.170.240.300.360.400.470.530.570.640.680.750.80

BZ-9


S=1.5H

7070100.450.530.600.650.690.760.800.830.870.900.940.97
50100.310.390.460.520.570.650.700.740.790.830.880.93
30100.220.300.370.430.480.550.610.660.730.770.830.89
5070100.420.500.560.610.650.710.760.790.830.850.900.94
50100.300.380.440.500.550.620.670.710.770.800.860.90
30100.220.290.360.410.460.540.600.640.710.750.810.86
3070100.400.470.530.580.610.670.720.750.790.830.870.90
50100.290.360.420.460.520.590.640.680.740.780.830.87
30100.210.230.350.400.450.520.560.620.690.730.790.84
0000.130.200.260.310.360.430.490.540.610.660.720.78

BZ-10


S=1.5H

7070100.420.500.560.620.660.730.770.810.850.880.920.96
50100.270.350.420.480.530.610.660.710.770.810.860.91
30100.180.250.310.380.430.510.570.620.690.740.810.87
5070100.390.460.520.580.620.680.730.760.810.840.890.92
50100.260.330.400.460.500.580.640.680.740.780.830.88
30100.170.240.300.360.410.490.560.600.670.720.790.84
3070100.360.430.490.540.580.640.690.720.770.800.850.89
50100.250.310.380.440.480.550.610.650.710.750.810.86
30100.170.230.290.350.400.480.540.580.650.700.770.82
0000.080.140.200.250.300.380.440.490.570.620.690.76

表2.3 上方光束のみによる固有照明率

照明率表
反射率
REFLECTANCE
(%)
室指数
ROOM INDEXES
(Kr)
天井
(ρc)

(ρw)

(ρf)
0.600.801.001.251.502.002.503.004.005.007.0010.00
8070300.470.560.630.700.740.810.850.880.920.940.971.00
100.430.510.570.620.650.700.730.760.780.800.820.83
50300.350.440.510.580.640.710.770.810.860.890.940.97
100.330.410.470.530.580.640.680.710.740.770.800.82
30300.280.360.430.500.560.640.700.750.810.850.900.94
100.270.340.410.470.520.590.630.670.710.740.770.80
7070300.400.480.530.590.630.680.720.740.780.800.820.84
100.370.440.480.530.560.600.630.650.670.690.710.72
50300.300.380.440.500.540.610.650.690.730.760.790.82
100.290.360.410.460.500.550.590.610.640.660.690.71
30300.240.310.370.430.480.550.600.640.690.720.760.80
100.230.300.350.410.450.510.550.580.620.640.670.69
5070300.270.320.360.390.420.450.480.490.520.530.540.56
100.250.300.330.360.380.410.430.450.470.480.490.50
50300.210.260.300.340.370.410.440.460.490.510.530.55
100.200.250.280.320.350.380.410.420.450.460.480.49
30300.170.220.260.300.330.380.410.430.470.490.510.53
100.160.210.250.290.310.360.380.400.430.450.470.48
3070300.150.180.200.220.230.250.270.280.290.300.310.31
100.140.170.190.210.220.240.250.260.270.280.290.29
50300.120.150.170.190.210.230.250.260.280.290.300.31
100.120.140.170.190.200.220.240.250.260.270.280.29
30300.100.130.150.170.190.220.240.250.270.280.290.30
100.100.120.150.170.190.210.230.240.250.260.280.29

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