BG55

BG55

A NIR cutoff filter with a high steepness of NIR cutoff.

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*product image is exemplary.

Spectral values guaranteed
τi (405nm) ≥0.76
τi (514nm) ≥0.93
τi (633nm) ≥0.18
τi (694nm) ≤0.016
τi (1060nm) ≤0.0005

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

SCHOTT
BG55 - BG55
Thickness
1.0
Reflection factor
0.9136
λ [nm]
200
210
220
230
240
250
260
270
280
290
300 < 10⁻³
310 0.007
320 0.092
330 0.265
340 0.421
350 0.528
360 0.598
370 0.650
380 0.693
390 0.731
400 0.765
410 0.794
420 0.821
430 0.845
440 0.866
450 0.884
460 0.900
470 0.913
480 0.925
490 0.934
λ [nm]
500 0.940
510 0.942
520 0.940
530 0.930
540 0.911
550 0.879
560 0.833
570 0.770
580 0.693
590 0.603
600 0.506
610 0.408
620 0.317
630 0.235
640 0.168
650 0.115
660 0.072
670 0.045
680 0.027
690 0.016
700 0.009
710 0.005
720 0.003
730 0.002
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 0.001
1,150 0.001
1,160 0.002
1,170 0.002
1,180 0.003
1,190 0.003
1,200 0.004
1,250 0.009
1,300 0.021
1,350 0.040
1,400 0.072
1,450 0.115
1,500 0.171
1,550 0.237
1,600 0.309
1,650 0.384
1,700 0.456
1,750 0.524
1,800 0.584
1,850 0.638
1,900 0.684
1,950 0.724
2,000 0.754
2,050 0.781
2,100 0.803
2,150 0.813
λ [nm]
2,200 0.804
2,250 0.803
2,300 0.812
2,350 0.823
2,400 0.831
2,450 0.827
2,500 0.812
2,550 0.782
2,600 0.753
2,650 0.732
2,700 0.699
2,750 0.588
2,800 0.189
2,850 0.056
2,900 0.026
2,950 0.016
3,000 0.011
3,050 0.008
3,100 0.007
3,150 0.005
3,200 0.005
3,250 0.004
3,300 0.004
3,350 0.004
3,400 0.004
3,450 0.005
3,500 0.006
3,550 0.007
3,600 0.009
3,650 0.011
λ [nm]
3,700 0.012
3,750 0.011
3,800 0.010
3,850 0.008
3,900 0.006
3,950 0.004
4,000 0.003
4,050 0.002
4,100 0.001
4,150 < 10⁻³
4,200 < 10⁻³
4,250 < 10⁻³
4,300 0.001
4,350 0.002
4,400 0.003
4,450 0.004
4,500 0.006
4,550 0.007
4,600 0.008
4,650 0.010
4,700 0.012
4,750 0.014
4,800 0.016
4,850 0.018
4,900 0.019
4,950 0.019
5,000 0.016
5,050 0.012
5,100 0.008
5,150 0.004
Reflection factor
Pd 0.914
Reference thickness
d [mm] 1
Spectral values guaranteed
τi (405nm) ≥0.76
τi (514nm) ≥0.93
τi (633nm) ≥0.18
τi (694nm) ≤0.016
τi (1060nm) ≤0.0005
Refractive Indices n
nF (486.1 nm) = 1.546
nh (404.7 nm) = 1.554
ng (435.8 nm) = 1.550
ns (852.1 nm) = 1.532
ne (546.1 nm) = 1.542
nd (587.6 nm) = 1.540

Colorimetric evaluation

Illuminant A(Planck T = 2347K)
d [mm] 1 2 3
x 0.356 0.302 0.267
y 0.438 0.452 0.460
Y 62 48 39
λd [nm] 501 500 500
Pe 0.21 0.33 0.41
Illuminant Planck T = 3200 K
d [mm] 1 2 3
x 0.336 0.285 0.252
y 0.423 0.432 0.437
Y 63 49 41
λd [nm] 499 498 498
Pe 0.21 0.34 0.42
Illuminant D65 (TC = 6504 K)
d [mm] 1 2 3
x 0.252 0.220 0.201
y 0.329 0.328 0.328
Y 69 57 48
λd [nm] 492 491 491
Pe 0.22 0.34 0.41
Density
p [g/cm3] 2.6522
Bubble content
Bubble class
Transformation temperature
Tg [°C] 453
Temperature coefficient
Tk [nm/°C]
Chemical Resistance
FR class 0
SR class 2.0
AR class 2.0
Thermal expansion
α-30°C/+70°C [10-6/K] 7.22
α20°C/300°C [10-6/K] 9.05
α20°C/200°C [10-6/K]