KG5 Data Sheet
Sydor Optics offers Optical Wedges , Optical Filters , and Witness Samples made from the SCHOTT KG5 substrate material. If you have questions or need help selecting the ideal material for your application, please contact a Sales Engineer, who will gladly assist you with your needs or discuss additional options that may be available.
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Refractive Indices
Pd
0.921
Reference thickness
d [mm]
2
Spectral values guaranteed
τi (365nm)≥0.8
τi (500nm)≥0.86
τi (600nm)≥0.8
τi (700nm)≤0.43
τi (800nm)≤0.09
τi (900nm)≤0.008
τi (1060nm)≤0.0001
τi (2200nm)≤0.001
Refractive Index n
ni (365.0 nm) = 1.530
nd (587.6 nm) = 1.510
Density
ρ [g/cm3 ]
2.53
Bubble content
Bubble class
3
Chemical Resistance
FR class
0
SR class
3.0
AR class
4.0
Transformation temperature
Tg [°C]
565
Thermal expansion
α-30/+70°C [10-6/K]
5.4
α20/300°C [10-6/K]
6.2
α20/200°C [10-6/K]
Temperature coefficient
TK [nm/°C]
Notes
Ionically colored glass
Shortpass filter
Heat protection filter
Long-term changes in the polished
surface are possible under some
circumstances.
Transmission changes are possible
under the action of intense
ultraviolet radiation.
All data without tolerances are to be
understood to be reference values.
Guaranteed values are only those
values listed in the section
“Spectral values guaranteed”.
Colorimetric evaluation
Illuminant
A (Planck T = 2856 K)
d [mm]
1
2
3
x
0.440
0.434
0.427
y
0.411
0.415
0.418
Y
85
78
72
λd [nm]
504
505
505
Pe
0.02
0.03
0.05
Illuminant
Planck T = 3200 K
d [mm]
1
2
3
x
0.416
0.410
0.404
y
0.402
0.406
0.409
Y
85
78
72
λd [nm]
503
503
503
Pe
0.02
0.03
0.05
Illuminant
D65 (TC = 6504 K)
d [mm]
1
2
3
x
0.308
0.304
0.300
y
0.331
0.332
0.334
Y
85
79
74
λd [nm]
496
496
496
Pe
0.02
0.03
0.04
Internal transmittance τi at reference thickness d = 2 mm
λ [nm]
τi
200
< 10-5
210
< 10-5
220
< 10-5
230
< 10-5
240
< 10-5
250
< 10-5
260
< 10-5
270
< 10-5
280
2.8·10-5
290
1.9·10-3
300
2.2·10-2
310
0.114
320
0.295
330
0.516
340
0.684
350
0.795
360
0.869
370
0.898
380
0.909
390
0.900
400
0.877
410
0.862
420
0.850
430
0.851
440
0.862
450
0.865
460
0.862
470
0.872
480
0.879
490
0.884
λ [nm]
τi
500
0.888
510
0.885
520
0.878
530
0.874
540
0.881
550
0.890
560
0.892
570
0.887
580
0.877
590
0.860
600
0.838
610
0.810
620
0.777
630
0.738
640
0.696
650
0.650
660
0.604
670
0.555
680
0.505
690
0.450
700
0.398
710
0.347
720
0.299
730
0.255
740
0.214
750
0.178
760
0.145
770
0.116
780
9.2·10-2
790
7.2·10-2
λ [nm]
τi
800
5.6·10-2
810
4.2·10-2
820
3.2·10-2
830
2.3·10-2
840
1.6·10-2
850
1.1·10-2
860
7.7·10-3
870
5.3·10-3
880
3.8·10-3
890
2.7·10-3
900
2.0·10-3
910
1.4·10-3
920
1.0·10-3
930
7.3·10-4
940
5.3·10-4
950
3.9·10-4
960
2.9·10-4
970
2.2·10-4
980
1.6·10-4
990
1.3·10-4
1000
9.9·10-5
1010
7.8·10-5
1020
6.2·10-5
1030
4.9·10-5
1040
4.1·10-5
1050
3.5·10-5
1060
3.0·10-5
1070
2.6·10-5
1080
2.3·10-5
1090
2.1·10-5
λ [nm]
τi
1100
1.9·10-5
1110
1.7·10-5
1120
1.5·10-5
1130
1.4·10-5
1140
1.2·10-5
1150
1.1·10-5
1160
1.0·10-5
1170
< 10-5
1180
< 10-5
1190
< 10-5
1200
< 10-5
1250
< 10-5
1300
< 10-5
1350
1.0·10-5
1400
1.5·10-5
1450
2.6·10-5
1500
4.5·10-5
1550
8.5·10-5
1600
1.5·10-4
1650
2.7·10-4
1700
4.4·10-4
1750
5.8·10-4
1800
6.6·10-4
1850
6.9·10-4
1900
6.5·10-4
1950
6.0·10-4
2000
5.6·10-4
2050
5.1·10-4
2100
4.9·10-4
2150
4.9·10-4
λ [nm]
τi
2200
5.4·10-4
2250
6.5·10-4
2300
8.3·10-4
2350
1.1·10-3
2400
1.5·10-3
2450
2.1·10-3
2500
2.9·10-3
2550
4.1·10-3
2600
5.3·10-3
2650
6.6·10-3
2700
7.9·10-3
2750
5.6·10-3
2800
8.9·10-4
2850
2.8·10-4
2900
2.0·10-4
2950
1.9·10-4
3000
1.8·10-4
3050
1.9·10-4
3100
2.1·10-4
3150
2.3·10-4
3200
2.7·10-4
3250
3.1·10-4
3300
3.6·10-4
3350
4.3·10-4
3400
5.6·10-4
3450
7.3·10-4
3500
9.3·10-4
3550
1.2·10-3
3600
1.6·10-3
3650
1.9·10-3
λ [nm]
τi
3700
2.2·10-3
3750
2.0·10-3
3800
1.6·10-3
3850
1.0·10-3
3900
4.6·10-4
3950
1.9·10-4
4000
7.4·10-5
4050
3.6·10-5
4100
1.6·10-5
4150
< 10-5
4200
< 10-5
4250
< 10-5
4300
< 10-5
4350
< 10-5
4400
< 10-5
4450
< 10-5
4500
< 10-5
4550
< 10-5
4600
< 10-5
4650
< 10-5
4700
< 10-5
4750
< 10-5
4800
< 10-5
4850
< 10-5
4900
< 10-5
4950
< 10-5
5000
< 10-5
5050
< 10-5
5100
< 10-5
5150
< 10-5
