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NG1

NG1

Neutral filters exhibit almost constant attenuation inside the visible spectrum. They appear grey.

Find more information in the tabs below or on our website.

Use our Interactive Filter Diagram to compare this filter or download our Filter Calculation Tool.

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*product image is exemplary.

Spectral values guaranteed
τi (546nm) <0.0001

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

SCHOTT
NG1 - NG1
Thickness
1.0
Reflection factor
0.9183
λ [nm]
200 < 10⁻³
210 < 10⁻³
220 < 10⁻³
230 < 10⁻³
240 < 10⁻³
250 < 10⁻³
260 < 10⁻³
270 < 10⁻³
280 < 10⁻³
290 < 10⁻³
300 < 10⁻³
310 < 10⁻³
320 < 10⁻³
330 < 10⁻³
340 < 10⁻³
350 < 10⁻³
360 < 10⁻³
370 < 10⁻³
380 < 10⁻³
390 < 10⁻³
400 < 10⁻³
410 < 10⁻³
420 < 10⁻³
430 < 10⁻³
440 < 10⁻³
450 < 10⁻³
460 < 10⁻³
470 < 10⁻³
480 < 10⁻³
490 < 10⁻³
λ [nm]
500 < 10⁻³
510 < 10⁻³
520 < 10⁻³
530 < 10⁻³
540 < 10⁻³
550 < 10⁻³
560 < 10⁻³
570 < 10⁻³
580 < 10⁻³
590 < 10⁻³
600 < 10⁻³
610 < 10⁻³
620 < 10⁻³
630 < 10⁻³
640 < 10⁻³
650 < 10⁻³
660 < 10⁻³
670 < 10⁻³
680 < 10⁻³
690 < 10⁻³
700 < 10⁻³
710 < 10⁻³
720 < 10⁻³
730 < 10⁻³
740 < 10⁻³
750 0.001
760 0.001
770 0.002
780 0.002
790 0.002
λ [nm]
800 0.003
810 0.003
820 0.003
830 0.004
840 0.004
850 0.004
860 0.005
870 0.005
880 0.005
890 0.005
900 0.006
910 0.006
920 0.006
930 0.006
940 0.006
950 0.007
960 0.007
970 0.008
980 0.008
990 0.008
1,000 0.009
1,010 0.009
1,020 0.010
1,030 0.010
1,040 0.011
1,050 0.011
1,060 0.012
1,070 0.012
1,080 0.013
1,090 0.014
λ [nm]
1,100 0.014
1,110 0.016
1,120 0.016
1,130 0.017
1,140 0.018
1,150 0.020
1,160 0.021
1,170 0.022
1,180 0.023
1,190 0.024
1,200 0.026
1,250 0.035
1,300 0.048
1,350 0.062
1,400 0.078
1,450 0.092
1,500 0.103
1,550 0.111
1,600 0.115
1,650 0.114
1,700 0.114
1,750 0.114
1,800 0.116
1,850 0.120
1,900 0.126
1,950 0.135
2,000 0.146
2,050 0.159
2,100 0.172
2,150 0.188
λ [nm]
2,200 0.204
2,250 0.219
2,300 0.238
2,350 0.256
2,400 0.272
2,450 0.285
2,500 0.303
2,550 0.319
2,600 0.331
2,650 0.335
2,700 0.327
2,750 0.170
2,800 0.089
2,850 0.082
2,900 0.092
2,950 0.104
3,000 0.117
3,050 0.131
3,100 0.147
3,150 0.168
3,200 0.186
3,250 0.204
3,300 0.213
3,350 0.204
3,400 0.166
3,450 0.138
3,500 0.094
3,550 0.062
3,600 0.040
3,650 0.033
λ [nm]
3,700 0.036
3,750 0.048
3,800 0.066
3,850 0.077
3,900 0.076
3,950 0.067
4,000 0.056
4,050 0.051
4,100 0.053
4,150 0.056
4,200 0.057
4,250 0.055
4,300 0.048
4,350 0.035
4,400 0.026
4,450 0.019
4,500 0.013
4,550 0.008
4,600 0.005
4,650 0.003
4,700 0.002
4,750 0.001
4,800 < 10⁻³
4,850 < 10⁻³
4,900 < 10⁻³
4,950 < 10⁻³
5,000 < 10⁻³
5,050 < 10⁻³
5,100 < 10⁻³
5,150 < 10⁻³
Reflection factor
Pd 0.918
Reference thickness
d [mm] 1
Spectral values guaranteed
τi (546nm) <0.0001
Refractive Indices n
nd (587.6 nm) = 1.520

Colorimetric evaluation

Illuminant A(Planck T = 2347K)
d [mm] 1 2 3
x
y
Y
λd [nm]
Pe
Illuminant Planck T = 3200 K
d [mm] 1 2 3
x
y
Y
λd [nm]
Pe
Illuminant D65 (TC = 6504 K)
d [mm] 1 2 3
x
y
Y
λd [nm]
Pe
Density
p [g/cm3] 2.47
Bubble content
Bubble class 2
Transformation temperature
Tg [°C] 471
Temperature coefficient
Tk [nm/°C]
Chemical Resistance
FR class 1
SR class 2.2
AR class 1.0
Thermal expansion
α-30°C/+70°C [10-6/K] 6.6
α20°C/300°C [10-6/K] 7.2
α20°C/200°C [10-6/K]