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© 2003-2013 ACO department

Политика по обработке Персональных данных

 

N-LAF2 - Schott 2000

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

  Main parameters
nd = 1.743972
ne = 1.747914
Vd = 44.85
Ve = 44.57
nF - nC = 0.016587
nF' - nC' = 0.016780
Coloring:
0.40 - 0.34 mkm.

  Coefficients of dispertion formulas
Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.80984227 C2 = 0.15729555 C3 = 1.0930037 C4 = 0.0101711622 C5 = 0.0442431765 C6 = 100.687748

  Refraction index
n 2.32541.705817
n 1.97011.711690
n 1.52961.718158
n 1.061.725625
n t1.726562
n s1.730640
n r1.736270
n C1.739029
n C'1.739809
n 0.63281.740540
n D1.743826
n d1.743972
n e1.747914
n F1.755617
n F'1.756589
n g1.765000
n h1.772979
n i1.787028
n 0.3341-----
n 0.3126-----
n 0.2967-----
n 0.2804-----
n 0.2483-----
  Relative partial dispertion
PC,t0.7516
PC,A'0.3305
Pd,C0.2979
Pe,C0.5356
Pg,d1.2676
Pg,F0.5656
Ph,g0.4810
Pi,g1.3279
PC',t0.7985
Pe,C'0.4886
PF',e0.5229
Pi,F'1.8350
 transmittance: 10 mm
τ2.50.69
τ2.32540.86
τ1.97010.971
τ1.52960.996
τ1.060.999
τ0.70.998
τ0.660.997
τ0.620.997
τ0.580.997
τ0.546070.998
τ0.50.993
τ0.460.985
τ0.43580.976
τ0.420.965
τ0.40470.94
τ0.40.93
τ0.390.9
τ0.380.83
τ0.370.71
τ0.3650.63
τ0.350.23
 transmittance: 25 mm
τ2.50.4
τ2.32540.69
τ1.97010.93
τ1.52960.99
τ1.060.997
τ0.70.996
τ0.660.993
τ0.620.992
τ0.580.993
τ0.546070.994
τ0.50.983
τ0.460.962
τ0.43580.94
τ0.420.92
τ0.40470.87
τ0.40.84
τ0.390.76
τ0.380.63
τ0.370.43
τ0.3650.31
τ0.350.03

  mechanical
Density: 4.3 g/cm3
Poisson coef.: 0.288
Young module: 940 Pa*108
Knoop hardness: 530
Optical stress coef.: 1.42 1/Pa*1012
Abrasion: 6

  Chemical
Climatic resistance: 2
Staining: 3
Resistance to acids: 52.2
Resistance to alkalis: 1
Phosphate resistance: 2.2

 Temperature coefficient of linear expansion
Temp. range, CValue, 1/C*10^-7
-30 ~ 7081
20 ~ 30091

 Temperature coefs. of nabs
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -20-2.3
20 ~ 40-1.6
60 ~ 80-1.2
-40 ~ -20e-1.3
20 ~ 40e-0.5
60 ~ 80e0
-40 ~ -20g-0.3
20 ~ 40g0.7
60 ~ 80g1.3
 Temperature coefs. of nrel
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -200
20 ~ 40-0.1
60 ~ 80-0.1
-40 ~ -20e1
20 ~ 40e1
60 ~ 80e1.2
-40 ~ -20g2.1
20 ~ 40g2.3
60 ~ 80g2.5