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© 2003-2013 ACO department

Политика по обработке Персональных данных

 

N-LAF34 - Schott 2000

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

  Main parameters
nd = 1.772500
ne = 1.776208
Vd = 49.62
Ve = 49.37
nF - nC = 0.015568
nF' - nC' = 0.015719
Coloring:
0.39 - 0.33 mkm.

  Coefficients of dispertion formulas
Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.75836958 C2 = 0.313537785 C3 = 1.18925231 C4 = 0.00872810026 C5 = 0.0293020832 C6 = 85.1780644

  Refraction index
n 2.32541.730849
n 1.97011.738239
n 1.52961.746103
n 1.061.754471
n t1.755457
n s1.759619
n r1.765146
n C1.767801
n C'1.768546
n 0.63281.769244
n D1.772361
n d1.772500
n e1.776208
n F1.783369
n F'1.784266
n g1.791961
n h1.799153
n i1.811547
n 0.3341-----
n 0.3126-----
n 0.2967-----
n 0.2804-----
n 0.2483-----
  Relative partial dispertion
PC,t0.7929
PC,A'0.3408
Pd,C0.3017
Pe,C0.5399
Pg,d1.2500
Pg,F0.5518
Ph,g0.4620
Pi,g1.2580
PC',t0.8408
Pe,C'0.4920
PF',e0.5176
Pi,F'1.7523
 transmittance: 10 mm
τ2.50.43
τ2.32540.73
τ1.97010.95
τ1.52960.994
τ1.060.998
τ0.70.997
τ0.660.997
τ0.620.996
τ0.580.996
τ0.546070.997
τ0.50.996
τ0.460.99
τ0.43580.985
τ0.420.979
τ0.40470.968
τ0.40.963
τ0.390.95
τ0.380.91
τ0.370.87
τ0.3650.83
τ0.350.63
τ0.33410.25
 transmittance: 25 mm
τ2.50.12
τ2.32540.46
τ1.97010.87
τ1.52960.984
τ1.060.994
τ0.70.993
τ0.660.992
τ0.620.991
τ0.580.991
τ0.546070.993
τ0.50.989
τ0.460.975
τ0.43580.962
τ0.420.95
τ0.40470.92
τ0.40.91
τ0.390.87
τ0.380.8
τ0.370.7
τ0.3650.63
τ0.350.31
τ0.33410.03

  mechanical
Density: 4.24 g/cm3
Poisson coef.: 0.292
Young module: 1230 Pa*108
Knoop hardness: 770
Optical stress coef.: 1.44 1/Pa*1012
Abrasion: 2

  Chemical
Climatic resistance: 1
Staining: 1
Resistance to acids: 51.3
Resistance to alkalis: 1
Phosphate resistance: 1

 Temperature coefficient of linear expansion
Temp. range, CValue, 1/C*10^-7
-30 ~ 7058
20 ~ 30070

 Temperature coefs. of nabs
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -201.9
20 ~ 402.7
60 ~ 803.2
-40 ~ -20e2.8
20 ~ 40e3.9
60 ~ 80e4.4
-40 ~ -20g3.7
20 ~ 40g4.9
60 ~ 80g5.5
 Temperature coefs. of nrel
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -204.2
20 ~ 404.3
60 ~ 804.4
-40 ~ -20e5.2
20 ~ 40e5.4
60 ~ 80e5.6
-40 ~ -20g6.2
20 ~ 40g6.5
60 ~ 80g6.8