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© 2003-2013 ACO department

Политика по обработке Персональных данных

 

N-LAK21 - Schott 2000

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

  Main parameters
nd = 1.640494
ne = 1.643036
Vd = 60.10
Ve = 59.85
nF - nC = 0.010656
nF' - nC' = 0.010742
Coloring:
0.37 - 0.31 mkm.

  Coefficients of dispertion formulas
Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.22718116 C2 = 0.420783743 C3 = 1.01284843 C4 = 0.00602075682 C5 = 0.0196862889 C6 = 88.4370099

  Refraction index
n 2.32541.607764
n 1.97011.614163
n 1.52961.620857
n 1.061.627589
n t1.628340
n s1.631431
n r1.635382
n C1.637241
n C'1.637760
n 0.63281.638245
n D1.640399
n d1.640494
n e1.643036
n F1.647898
n F'1.648503
n g1.653664
n h1.658442
n i1.666573
n 0.3341-----
n 0.3126-----
n 0.2967-----
n 0.2804-----
n 0.2483-----
  Relative partial dispertion
PC,t0.8352
PC,A'0.3508
Pd,C0.3052
Pe,C0.5437
Pg,d1.2358
Pg,F0.5410
Ph,g0.4483
Pi,g1.2113
PC',t0.8839
Pe,C'0.4950
PF',e0.5129
Pi,F'1.6956
 transmittance: 10 mm
τ2.50.54
τ2.32540.75
τ1.97010.95
τ1.52960.988
τ1.060.998
τ0.70.998
τ0.660.997
τ0.620.996
τ0.580.997
τ0.546070.997
τ0.50.996
τ0.460.992
τ0.43580.988
τ0.420.985
τ0.40470.979
τ0.40.976
τ0.390.963
τ0.380.94
τ0.370.91
τ0.3650.88
τ0.350.74
τ0.33410.47
τ0.320.21
 transmittance: 25 mm
τ2.50.21
τ2.32540.49
τ1.97010.87
τ1.52960.97
τ1.060.994
τ0.70.994
τ0.660.993
τ0.620.991
τ0.580.992
τ0.546070.993
τ0.50.99
τ0.460.98
τ0.43580.97
τ0.420.963
τ0.40470.95
τ0.40.94
τ0.390.91
τ0.380.86
τ0.370.78
τ0.3650.72
τ0.350.47
τ0.33410.15
τ0.320.02

  mechanical
Density: 3.74 g/cm3
Poisson coef.: 0.272
Young module: 910 Pa*108
Knoop hardness: 600
Optical stress coef.: 1.74 1/Pa*1012
Abrasion: 5

  Chemical
Climatic resistance: 4
Staining: 2
Resistance to acids: 53.2
Resistance to alkalis: 4.3
Phosphate resistance: 4.3

 Temperature coefficient of linear expansion
Temp. range, CValue, 1/C*10^-7
-30 ~ 7068
20 ~ 30081

 Temperature coefs. of nabs
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -20-1.6
20 ~ 40-0.9
60 ~ 80-0.4
-40 ~ -20e-1.2
20 ~ 40e-0.4
60 ~ 80e0.1
-40 ~ -20g-0.7
20 ~ 40g0.1
60 ~ 80g0.7
 Temperature coefs. of nrel
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -200.6
20 ~ 400.5
60 ~ 800.7
-40 ~ -20e1.1
20 ~ 40e1
60 ~ 80e1.3
-40 ~ -20g1.6
20 ~ 40g1.6
60 ~ 80g1.9