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    KG2

    Virtually colorless shortpass filter with high transmission in the visible and high absorption in the IR ranges (heat protection filter).

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    KG2
    Spectral values guaranteed
    τi (365nm) ≥0.93
    τi (500nm) ≥0.94
    τi (600nm) ≥0.92
    τi (700nm) ≤0.83
    τi (800nm) ≤0.55
    τi (900nm) ≤0.28
    τi (1060nm) ≤0.12
    τi (2200nm) ≤0.2
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    SCHOTT Article
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      Download Data sheet KG2
      Article Details
       
      Technical Details
      Internal Transmittance (Chart)

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

      Lambda [nm]
      200
      300
      400
      500
      600
      700
      800
      900
      1000
      1100
      1200
      1E-5
      1E-4
      1E-3
      0.01
      0.05
      0.1
      0.2
      0.3
      0.4
      0.5
      0.6
      0.7
      0.8
      0.9
      0.95
      0.96
      0.97
      0.98
      0.99
      SCHOTT
      KG2 - KG2
      Thickness
      2.0
      Reflection factor
      0.9200
      Internal Transmittance (Table)
      λ [nm]
      200 < 10⁻³
      210 < 10⁻³
      220 < 10⁻³
      230 < 10⁻³
      240 < 10⁻³
      250 < 10⁻³
      260 0.001
      270 0.020
      280 0.088
      290 0.245
      300 0.444
      310 0.637
      320 0.769
      330 0.852
      340 0.902
      350 0.931
      360 0.949
      370 0.959
      380 0.965
      390 0.961
      400 0.955
      410 0.948
      420 0.942
      430 0.939
      440 0.938
      450 0.939
      460 0.942
      470 0.946
      480 0.951
      490 0.954
      λ [nm]
      500 0.957
      510 0.956
      520 0.954
      530 0.952
      540 0.953
      550 0.955
      560 0.954
      570 0.952
      580 0.949
      590 0.944
      600 0.938
      610 0.931
      620 0.923
      630 0.913
      640 0.902
      650 0.889
      660 0.875
      670 0.859
      680 0.841
      690 0.820
      700 0.798
      710 0.774
      720 0.750
      730 0.725
      740 0.699
      750 0.671
      760 0.643
      770 0.613
      780 0.584
      790 0.553
      λ [nm]
      800 0.524
      810 0.494
      820 0.464
      830 0.434
      840 0.408
      850 0.382
      860 0.356
      870 0.330
      880 0.305
      890 0.284
      900 0.265
      910 0.246
      920 0.228
      930 0.213
      940 0.200
      950 0.185
      960 0.173
      970 0.161
      980 0.151
      990 0.142
      1,000 0.133
      1,010 0.126
      1,020 0.119
      1,030 0.113
      1,040 0.109
      1,050 0.105
      1,060 0.101
      1,070 0.097
      1,080 0.095
      1,090 0.093
      λ [nm]
      1,100 0.091
      1,110 0.090
      1,120 0.088
      1,130 0.087
      1,140 0.086
      1,150 0.085
      1,160 0.084
      1,170 0.083
      1,180 0.082
      1,190 0.081
      1,200 0.080
      1,250 0.079
      1,300 0.081
      1,350 0.085
      1,400 0.093
      1,450 0.103
      1,500 0.116
      1,550 0.131
      1,600 0.147
      1,650 0.165
      1,700 0.183
      1,750 0.195
      1,800 0.201
      1,850 0.201
      1,900 0.197
      1,950 0.190
      2,000 0.183
      2,050 0.178
      2,100 0.172
      2,150 0.168
      λ [nm]
      2,200 0.165
      2,250 0.167
      2,300 0.176
      2,350 0.189
      2,400 0.200
      2,450 0.211
      2,500 0.223
      2,550 0.231
      2,600 0.237
      2,650 0.240
      2,700 0.233
      2,750 0.149
      2,800 0.023
      2,850 0.007
      2,900 0.005
      2,950 0.004
      3,000 0.003
      3,050 0.003
      3,100 0.003
      3,150 0.003
      3,200 0.003
      3,250 0.003
      3,300 0.004
      3,350 0.004
      3,400 0.004
      3,450 0.005
      3,500 0.005
      3,550 0.006
      3,600 0.007
      3,650 0.008
      λ [nm]
      3,700 0.007
      3,750 0.005
      3,800 0.003
      3,850 0.002
      3,900 < 10⁻³
      3,950 < 10⁻³
      4,000 < 10⁻³
      4,050 < 10⁻³
      4,100 < 10⁻³
      4,150 < 10⁻³
      4,200 < 10⁻³
      4,250 < 10⁻³
      4,300 < 10⁻³
      4,350 < 10⁻³
      4,400 < 10⁻³
      4,450 < 10⁻³
      4,500 < 10⁻³
      4,550 < 10⁻³
      4,600 < 10⁻³
      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
      Optical values
      Reflection factor
      Pd 0.920
      Reference thickness
      d [mm] 2
      Spectral values guaranteed
      τi (365nm) ≥0.93
      τi (500nm) ≥0.94
      τi (600nm) ≥0.92
      τi (700nm) ≤0.83
      τi (800nm) ≤0.55
      τi (900nm) ≤0.28
      τi (1060nm) ≤0.12
      τi (2200nm) ≤0.2
      Refractive Indices n
      nd (587.6 nm) = 1.510
      Colorimetric evaluation
      Illuminant A(Planck T = 2347K)
      d [mm] 1 2 3
      x 0.446 0.444 0.442
      y 0.409 0.410 0.411
      Y 89 87 84
      λd [nm] 506 507 507
      Pe 0.00 0.01 0.01
      Illuminant Planck T = 3200 K
      d [mm] 1 2 3
      x 0.422 0.420 0.419
      y 0.400 0.401 0.402
      Y 89 87 84
      λd [nm] 505 505 506
      Pe 0.00 0.01 0.01
      Illuminant D65 (TC = 6504 K)
      d [mm] 1 2 3
      x 0.312 0.311 0.310
      y 0.330 0.331 0.331
      Y 90 87 85
      λd [nm] 501 501 501
      Pe 0.00 0.01 0.01
      Physical values
      Density
      p [g/cm3] 2.52
      Bubble content
      Bubble class 3
      Transformation temperature
      Tg [°C] 605
      Temperature coefficient
      Tk [nm/°C]
      Chemical Resistance
      FR class 0
      SR class 2.0
      AR class 3.0
      Thermal expansion
      α-30°C/+70°C [10-6/K] 5.4
      α20°C/300°C [10-6/K] 6.3
      α20°C/200°C [10-6/K]
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