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BG67

A NIR cutoff filter with high humidity resistance.

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BG67
Spectral values guaranteed
τi (450nm) ≥0.7
τi (500nm) ≥0.8
τi (550nm) ≥0.65
τi (600nm) ≤0.19
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Download Data sheet BG67
Technical Details
Internal Transmittance (Chart)

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

SCHOTT
BG67 - BG67
Thickness
1.0
Reflection factor
0.9134
Internal Transmittance (Table)
λ [nm]
200
210
220
230
240
250
260
270
280
290
300
310 < 10⁻³
320 < 10⁻³
330 < 10⁻³
340 0.013
350 0.091
360 0.220
370 0.336
380 0.423
390 0.488
400 0.539
410 0.583
420 0.623
430 0.659
440 0.693
450 0.724
460 0.752
470 0.776
480 0.797
490 0.813
λ [nm]
500 0.823
510 0.825
520 0.816
530 0.790
540 0.744
550 0.676
560 0.588
570 0.486
580 0.379
590 0.275
600 0.185
610 0.115
620 0.066
630 0.035
640 0.017
650 0.008
660 0.003
670 0.001
680 < 10⁻³
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 0.002
1,300 0.005
1,350 0.013
1,400 0.026
1,450 0.053
1,500 0.092
1,550 0.145
1,600 0.207
1,650 0.277
1,700 0.349
1,750 0.421
1,800 0.490
1,850 0.552
1,900 0.608
1,950 0.658
2,000 0.701
2,050 0.738
2,100 0.770
2,150 0.796
λ [nm]
2,200 0.816
2,250 0.834
2,300 0.849
2,350 0.862
2,400 0.872
2,450 0.880
2,500 0.884
2,550 0.887
2,600 0.887
2,650 0.886
2,700 0.881
2,750 0.865
2,800 0.797
2,850 0.682
2,900 0.582
2,950 0.507
3,000 0.448
3,050 0.396
3,100 0.350
3,150 0.308
3,200 0.272
3,250 0.243
3,300 0.219
3,350 0.202
3,400 0.190
3,450 0.183
3,500 0.180
3,550 0.183
3,600 0.191
3,650 0.204
λ [nm]
3,700 0.222
3,750 0.239
3,800 0.246
3,850 0.232
3,900 0.204
3,950 0.170
4,000 0.127
4,050 0.077
4,100 0.041
4,150 0.021
4,200 0.011
4,250 0.008
4,300 0.007
4,350 0.008
4,400 0.007
4,450 0.006
4,500 0.005
4,550 0.004
4,600 0.004
4,650 0.006
4,700 0.009
4,750 0.015
4,800 0.022
4,850 0.031
4,900 0.041
4,950 0.055
5,000 0.071
5,050 0.086
5,100 0.098
5,150 0.102
Optical values
Reflection factor
Pd 0.913
Reference thickness
d [mm] 1
Spectral values guaranteed
τi (450nm) ≥0.7
τi (500nm) ≥0.8
τi (550nm) ≥0.65
τi (600nm) ≤0.19
Refractive Indices n
nF (486.1 nm) = 1.547
nh (404.7 nm) = 1.556
ng (435.8 nm) = 1.552
ns (852.1 nm) = 1.533
ne (546.1 nm) = 1.543
nd (587.6 nm) = 1.541
Colorimetric evaluation
Illuminant A(Planck T = 2347K)
d [mm] 1 2 3
x 0.285 0.222 0.189
y 0.450 0.456 0.457
Y 41 25 17
λd [nm] 499 498 498
Pe 0.37 0.52 0.59
Illuminant Planck T = 3200 K
d [mm] 1 2 3
x 0.269 0.211 0.182
y 0.429 0.431 0.431
Y 43 27 19
λd [nm] 498 497 497
Pe 0.38 0.52 0.60
Illuminant D65 (TC = 6504 K)
d [mm] 1 2 3
x 0.209 0.176 0.159
y 0.321 0.317 0.318
Y 50 33 24
λd [nm] 491 490 491
Pe 0.38 0.51 0.57
Physical values
Density
p [g/cm3] 2.8547
Bubble content
Bubble class
Transformation temperature
Tg [°C] 390
Temperature coefficient
Tk [nm/°C]
Chemical Resistance
FR class 1.0
SR class 52.3
AR class 3.3
Thermal expansion
α-30°C/+70°C [10-6/K] 11.76
α20°C/300°C [10-6/K] 13.65
α20°C/200°C [10-6/K]
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