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RG645

RG645

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

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
λsi = 0.00001) [nm] 560
λci = 0.5) [nm] 645 ± 6
λp1i = 0.92) [nm] 720
Glass type
Article L
W
T
Weight

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

SCHOTT
RG645 - RG645
Thickness
3.0
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 0.004
630 0.061
640 0.311
650 0.645
660 0.845
670 0.927
680 0.959
690 0.971
700 0.976
710 0.978
720 0.978
730 0.978
740 0.977
750 0.977
760 0.975
770 0.974
780 0.973
790 0.972
λ [nm]
800 0.971
810 0.970
820 0.969
830 0.968
840 0.967
850 0.966
860 0.966
870 0.965
880 0.965
890 0.964
900 0.964
910 0.964
920 0.963
930 0.963
940 0.962
950 0.962
960 0.962
970 0.961
980 0.961
990 0.961
1,000 0.961
1,010 0.960
1,020 0.960
1,030 0.960
1,040 0.960
1,050 0.960
1,060 0.960
1,070 0.960
1,080 0.960
1,090 0.960
λ [nm]
1,100 0.960
1,110 0.961
1,120 0.961
1,130 0.961
1,140 0.961
1,150 0.961
1,160 0.962
1,170 0.962
1,180 0.962
1,190 0.962
1,200 0.963
1,250 0.964
1,300 0.966
1,350 0.968
1,400 0.969
1,450 0.973
1,500 0.977
1,550 0.979
1,600 0.981
1,650 0.982
1,700 0.981
1,750 0.980
1,800 0.979
1,850 0.977
1,900 0.976
1,950 0.975
2,000 0.974
2,050 0.973
2,100 0.971
2,150 0.968
λ [nm]
2,200 0.955
2,250 0.952
2,300 0.955
2,350 0.956
2,400 0.953
2,450 0.947
2,500 0.941
2,550 0.945
2,600 0.945
2,650 0.934
2,700 0.889
2,750 0.544
2,800 0.392
2,850 0.374
2,900 0.379
2,950 0.378
3,000 0.367
3,050 0.346
3,100 0.318
3,150 0.291
3,200 0.269
3,250 0.248
3,300 0.231
3,350 0.218
3,400 0.208
3,450 0.204
3,500 0.205
3,550 0.211
3,600 0.221
3,650 0.230
λ [nm]
3,700 0.240
3,750 0.250
3,800 0.262
3,850 0.271
3,900 0.279
3,950 0.283
4,000 0.279
4,050 0.266
4,100 0.244
4,150 0.215
4,200 0.184
4,250 0.153
4,300 0.120
4,350 0.085
4,400 0.051
4,450 0.025
4,500 0.012
4,550 0.005
4,600 0.002
4,650 < 10⁻³
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
Reflection factor
Pd 0.918
Reference thickness
d [mm] 3
Spectral values guaranteed
λsi = 0.00001) [nm] 560
λci = 0.5) [nm] 645 ± 6
λp1i = 0.92) [nm] 720
Refractive Indices n
ns (852.1 nm) = 1.520
nd (587.6 nm) = 1.520

Colorimetric evaluation

Illuminant A(Planck T = 2347K)
d [mm] 1 2 3
x 0.672 0.722 0.726
y 0.303 0.277 0.274
Y 9 5 4
λd [nm] 640 647 651
Pe 0.83 0.99 1.00
Illuminant Planck T = 3200 K
d [mm] 1 2 3
x 0.662 0.722 0.726
y 0.304 0.277 0.274
Y 8 4 3
λd [nm] 640 646 651
Pe 0.81 0.99 1.00
Illuminant D65 (TC = 6504 K)
d [mm] 1 2 3
x 0.584 0.717 0.726
y 0.298 0.278 0.274
Y 5 2 2
λd [nm] 638 645 650
Pe 0.67 0.98 1.00
Density
p [g/cm3] 2.65
Bubble content
Bubble class 3
Transformation temperature
Tg [°C] 519
Temperature coefficient
Tk [nm/°C] 0.16
Chemical Resistance
FR class 0
SR class 1.0
AR class 1.0
Thermal expansion
α-30°C/+70°C [10-6/K] 8
α20°C/300°C [10-6/K] 9.2
α20°C/200°C [10-6/K]