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RG850

A longpass filter with low transmission in short wavelengths range and high transmission in long wavelength ranges. They seperate visible from infrared light.

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RG850
Spectral values guaranteed
λs (τi = 0.00001) [nm] 700
λc (τi = 0.5) [nm] 850 ± 9
λp1 (τi = 0.92) [nm] 950
λp2 (τi = 0.97) [nm] 1200
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Download Data sheet RG850
Article Details
SCHOTT
Article
Glass type
L
W
T
Weight
 
Technical Details
Internal Transmittance (Chart)

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

SCHOTT
RG850 - RG850
Thickness
3.0
Reflection factor
0.9087
Internal Transmittance (Table)
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 < 10⁻³
760 < 10⁻³
770 < 10⁻³
780 < 10⁻³
790 < 10⁻³
λ [nm]
800 0.001
810 0.005
820 0.024
830 0.091
840 0.261
850 0.500
860 0.704
870 0.838
880 0.905
890 0.940
900 0.957
910 0.965
920 0.971
930 0.974
940 0.977
950 0.978
960 0.979
970 0.980
980 0.981
990 0.982
1,000 0.983
1,010 0.984
1,020 0.985
1,030 0.986
1,040 0.987
1,050 0.987
1,060 0.988
1,070 0.989
1,080 0.989
1,090 0.990
λ [nm]
1,100 0.990
1,110 0.991
1,120 0.991
1,130 0.992
1,140 0.992
1,150 0.993
1,160 0.993
1,170 0.994
1,180 0.994
1,190 0.994
1,200 0.995
1,250 0.996
1,300 0.997
1,350 0.998
1,400 0.997
1,450 0.998
1,500 1.000
1,550 1.000
1,600 1.000
1,650 0.999
1,700 0.997
1,750 0.995
1,800 0.993
1,850 0.992
1,900 0.991
1,950 0.989
2,000 0.987
2,050 0.987
2,100 0.984
2,150 0.978
λ [nm]
2,200 0.966
2,250 0.957
2,300 0.958
2,350 0.956
2,400 0.947
2,450 0.941
2,500 0.937
2,550 0.934
2,600 0.927
2,650 0.911
2,700 0.865
2,750 0.510
2,800 0.224
2,850 0.169
2,900 0.142
2,950 0.121
3,000 0.104
3,050 0.093
3,100 0.083
3,150 0.077
3,200 0.074
3,250 0.072
3,300 0.068
3,350 0.064
3,400 0.059
3,450 0.054
3,500 0.049
3,550 0.045
3,600 0.045
3,650 0.045
λ [nm]
3,700 0.042
3,750 0.037
3,800 0.035
3,850 0.042
3,900 0.055
3,950 0.072
4,000 0.071
4,050 0.063
4,100 0.057
4,150 0.052
4,200 0.049
4,250 0.052
4,300 0.051
4,350 0.044
4,400 0.033
4,450 0.023
4,500 0.013
4,550 0.007
4,600 0.003
4,650 0.001
4,700 < 10⁻³
4,750 < 10⁻³
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
Optical values
Reflection factor
Pd 0.909
Reference thickness
d [mm] 3
Spectral values guaranteed
λs (τi = 0.00001) [nm] 700
λc (τi = 0.5) [nm] 850 ± 9
λp1 (τi = 0.92) [nm] 950
λp2 (τi = 0.97) [nm] 1200
Refractive Indices n
ns (852.1 nm) = 1.550
nd (587.6 nm) = 1.560
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
Physical values
Density
p [g/cm3] 2.93
Bubble content
Bubble class 3
Transformation temperature
Tg [°C] 554
Temperature coefficient
Tk [nm/°C] 0.24
Chemical Resistance
FR class 5
SR class 53.4
AR class 1.3
Thermal expansion
α-30°C/+70°C [10-6/K] 9.41
α20°C/300°C [10-6/K] 10.41
α20°C/200°C [10-6/K]
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