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© 2003-2013 ACO department

Политика по обработке Персональных данных
 

N-FK5 - Schott 2000

 Diagram n (λ)    n calculation    Diagram τ (λ)    τ calculation    Analogue search

  Main parameters
nd = 1.487490
ne = 1.489143 		Vd = 70.40
Ve = 70.22 		nF - nC = 0.006924
nF' - nC' = 0.006965 		Coloring:
0.30 - 0.25 mkm.

  Coefficients of dispertion formulas
Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 0.844309338 C2 = 0.344147824 C3 = 0.910790213 C4 = 0.00475111955 C5 = 0.0149814849 C6 = 97.8600293

  Refraction index
n 2.32541.461808
n 1.97011.467382
n 1.52961.473120
n 1.061.478551
n t1.479119
n s1.481371
n r1.484098
n C1.485345
n C'1.485690
n 0.63281.486011
n D1.487427
n d1.487490
n e1.489143
n F1.492269
n F'1.492655
n g1.495932
n h1.498938
n i1.504006
n 0.3341-----
n 0.3126-----
n 0.2967-----
n 0.2804-----
n 0.2483-----
  Relative partial dispertion
PC,t0.8991
PC,A'0.3650
Pd,C0.3097
Pe,C0.5485
Pg,d1.2192
Pg,F0.5289
Ph,g0.4342
Pi,g1.1661
PC',t0.9489
Pe,C'0.4987
PF',e0.5072
Pi,F'1.6393
 transmittance: 10 mm
τ2.50.66
τ2.32540.82
τ1.97010.967
τ1.52960.984
τ1.060.998
τ0.70.998
τ0.660.998
τ0.620.998
τ0.580.998
τ0.546070.998
τ0.50.998
τ0.460.998
τ0.43580.998
τ0.420.998
τ0.40470.997
τ0.40.997
τ0.390.997
τ0.380.997
τ0.370.996
τ0.3650.996
τ0.350.996
τ0.33410.99
τ0.320.976
τ0.310.95
τ0.30.89
τ0.290.73
τ0.280.48
τ0.270.23
 transmittance: 25 mm
τ2.50.35
τ2.32540.6
τ1.97010.92
τ1.52960.96
τ1.060.994
τ0.70.996
τ0.660.994
τ0.620.994
τ0.580.995
τ0.546070.995
τ0.50.995
τ0.460.994
τ0.43580.994
τ0.420.994
τ0.40470.993
τ0.40.993
τ0.390.993
τ0.380.992
τ0.370.991
τ0.3650.99
τ0.350.989
τ0.33410.976
τ0.320.94
τ0.310.88
τ0.30.74
τ0.290.46
τ0.280.16
τ0.270.03

  mechanical
Density: 2.45 g/cm3
Poisson coef.: 0.232
Young module: 620 Pa*108
Knoop hardness: 520
Optical stress coef.: 2.91 1/Pa*1012
Abrasion: 3

  Chemical
Climatic resistance: 2
Staining: 1
Resistance to acids: 4
Resistance to alkalis: 2
Phosphate resistance: 2.3

 Temperature coefficient of linear expansion
Temp. range, CValue, 1/C*10^-7
-30 ~ 7092
20 ~ 300100

 Temperature coefs. of nabs
Temp. range,
C		Wave length,
mkm.		Value,
1/C*10-6
-40 ~ -20-3.5
20 ~ 40-2.6
60 ~ 80-2.2
-40 ~ -20e-3.2
20 ~ 40e-2.3
60 ~ 80e-1.8
-40 ~ -20g-2.9
20 ~ 40g-2
60 ~ 80g-1.4
 Temperature coefs. of nrel
Temp. range,
C		Wave length,
mkm.		Value,
1/C*10-6
-40 ~ -20-1.5
20 ~ 40-1.4
60 ~ 80-1.2
-40 ~ -20e-1.2
20 ~ 40e-1
60 ~ 80e-0.7
-40 ~ -20g-0.9
20 ~ 40g-0.6
60 ~ 80g-0.3