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BG45

BG45
Spectral values guaranteed
τi (514nm) ≥0.93
τi (700nm) ≤0.001
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Technical Details
Internal Transmittance (Chart)

Only values between 1 and 30 with one decimal place are allowed.

SCHOTT
BG45 - BG45
Thickness
1.0
Reflection factor
0.9110
Internal Transmittance (Table)
λ [nm]
200
210
220
230
240
250
260
270
280
290
300 < 10⁻³
310 0.001
320 0.045
330 0.200
340 0.371
350 0.488
360 0.568
370 0.625
380 0.671
390 0.715
400 0.750
410 0.786
420 0.814
430 0.842
440 0.864
450 0.885
460 0.902
470 0.917
480 0.929
490 0.938
λ [nm]
500 0.944
510 0.946
520 0.941
530 0.925
540 0.896
550 0.850
560 0.784
570 0.695
580 0.589
590 0.470
600 0.353
610 0.246
620 0.159
630 0.095
640 0.051
650 0.026
660 0.012
670 0.005
680 0.002
690 < 10⁻³
700 < 10⁻³
710 < 10⁻³
720 < 10⁻³
730 < 10⁻³
740 < 10⁻³
750 < 10⁻³
760 < 10⁻³
770 < 10⁻³
780 < 10⁻³
790 < 10⁻³
λ [nm]
800 < 10⁻³
810 < 10⁻³
820 < 10⁻³
830 < 10⁻³
840 < 10⁻³
850 < 10⁻³
860 < 10⁻³
870 < 10⁻³
880 < 10⁻³
890 < 10⁻³
900 < 10⁻³
910 < 10⁻³
920 < 10⁻³
930 < 10⁻³
940 < 10⁻³
950 < 10⁻³
960 < 10⁻³
970 < 10⁻³
980 < 10⁻³
990 < 10⁻³
1,000 < 10⁻³
1,010 < 10⁻³
1,020 < 10⁻³
1,030 < 10⁻³
1,040 < 10⁻³
1,050 < 10⁻³
1,060 < 10⁻³
1,070 < 10⁻³
1,080 < 10⁻³
1,090 < 10⁻³
λ [nm]
1,100 < 10⁻³
1,110 < 10⁻³
1,120 < 10⁻³
1,130 < 10⁻³
1,140 < 10⁻³
1,150 < 10⁻³
1,160 < 10⁻³
1,170 < 10⁻³
1,180 < 10⁻³
1,190 < 10⁻³
1,200 < 10⁻³
1,250 < 10⁻³
1,300 < 10⁻³
1,350 0.002
1,400 0.006
1,450 0.015
1,500 0.036
1,550 0.068
1,600 0.116
1,650 0.178
1,700 0.250
1,750 0.328
1,800 0.407
1,850 0.483
1,900 0.551
1,950 0.616
2,000 0.670
2,050 0.716
2,100 0.756
2,150 0.785
λ [nm]
2,200 0.802
2,250 0.811
2,300 0.826
2,350 0.842
2,400 0.853
2,450 0.860
2,500 0.853
2,550 0.830
2,600 0.813
2,650 0.800
2,700 0.778
2,750 0.707
2,800 0.395
2,850 0.188
2,900 0.107
2,950 0.070
3,000 0.049
3,050 0.036
3,100 0.028
3,150 0.022
3,200 0.018
3,250 0.016
3,300 0.014
3,350 0.014
3,400 0.014
3,450 0.015
3,500 0.017
3,550 0.020
3,600 0.023
3,650 0.027
λ [nm]
3,700 0.030
3,750 0.029
3,800 0.025
3,850 0.021
3,900 0.015
3,950 0.009
4,000 0.006
4,050 0.004
4,100 0.002
4,150 0.002
4,200 0.001
4,250 0.001
4,300 0.002
4,350 0.003
4,400 0.005
4,450 0.007
4,500 0.009
4,550 0.011
4,600 0.013
4,650 0.016
4,700 0.020
4,750 0.023
4,800 0.026
4,850 0.029
4,900 0.031
4,950 0.031
5,000 0.029
5,050 0.025
5,100 0.018
5,150 0.010
Optical values
Reflection factor
Pd 0.911
Reference thickness
d [mm] 1
Spectral values guaranteed
τi (514nm) ≥0.93
τi (700nm) ≤0.001
Refractive Indices n
nF (486.1 nm) = 1.557
nh (404.7 nm) = 1.569
ng (435.8 nm) = 1.563
ns (852.1 nm) = 1.543
ne (546.1 nm) = 1.552
nd (587.6 nm) = 1.550
Colorimetric evaluation
Illuminant A(Planck T = 2347K)
d [mm] 1 2 3
x 0.319 0.260 0.227
y 0.445 0.453 0.455
Y 55 41 33
λd [nm] 500 499 499
Pe 0.29 0.43 0.51
Illuminant Planck T = 3200 K
d [mm] 1 2 3
x 0.301 0.247 0.216
y 0.426 0.430 0.429
Y 56 43 35
λd [nm] 498 497 497
Pe 0.30 0.43 0.51
Illuminant D65 (TC = 6504 K)
d [mm] 1 2 3
x 0.229 0.197 0.179
y 0.324 0.318 0.315
Y 63 51 43
λd [nm] 491 490 490
Pe 0.31 0.43 0.50
Physical values
Density
p [g/cm3] 2.7634
Bubble content
Bubble class
Transformation temperature
Tg [°C] 384
Temperature coefficient
Tk [nm/°C]
Chemical Resistance
FR class 0
SR class 4.0
AR class 4.3
Thermal expansion
α-30°C/+70°C [10-6/K] 8.12
α20°C/300°C [10-6/K] 10.09
α20°C/200°C [10-6/K]
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