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© 2003-2013 ACO department

Политика по обработке Персональных данных

 

N-LASF41 - Schott 2000

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

  Main parameters
nd = 1.835010
ne = 1.839613
Vd = 43.12
Ve = 42.88
nF - nC = 0.019360
nF' - nC' = 0.019578
Coloring:
0.41 - 0.32 mkm.

  Coefficients of dispertion formulas
Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.86348331 C2 = 0.413307255 C3 = 1.35784815 C4 = 0.00910368219 C5 = 0.0339247268 C6 = 93.3580595

  Refraction index
n 2.32541.788590
n 1.97011.796083
n 1.52961.804230
n 1.061.813377
n t1.814502
n s1.819358
n r1.825991
n C1.829228
n C'1.830140
n 0.63281.830996
n D1.834839
n d1.835010
n e1.839613
n F1.848588
n F'1.849719
n g1.859487
n h1.868719
n i1.884861
n 0.3341-----
n 0.3126-----
n 0.2967-----
n 0.2804-----
n 0.2483-----
  Relative partial dispertion
PC,t0.7605
PC,A'0.3325
Pd,C0.2986
Pe,C0.5364
Pg,d1.2642
Pg,F0.5629
Ph,g0.4768
Pi,g1.3105
PC',t0.8077
Pe,C'0.4892
PF',e0.5219
Pi,F'1.8151
 transmittance: 10 mm
τ2.50.75
τ2.32540.91
τ1.97010.986
τ1.52960.998
τ1.060.998
τ0.70.999
τ0.660.999
τ0.620.998
τ0.580.998
τ0.546070.998
τ0.50.996
τ0.460.991
τ0.43580.987
τ0.420.983
τ0.40470.977
τ0.40.973
τ0.390.963
τ0.380.94
τ0.370.91
τ0.3650.89
τ0.350.77
τ0.33410.54
τ0.320.2
 transmittance: 25 mm
τ2.50.24
τ2.32540.62
τ1.97010.93
τ1.52960.988
τ1.060.992
τ0.70.993
τ0.660.993
τ0.620.992
τ0.580.991
τ0.546070.99
τ0.50.978
τ0.460.954
τ0.43580.94
τ0.420.92
τ0.40470.89
τ0.40.87
τ0.390.83
τ0.380.75
τ0.370.63
τ0.3650.55
τ0.350.27
τ0.33410.04

  mechanical
Density: 4.93 g/cm3
Poisson coef.: 0.294
Young module: 1240 Pa*108
Knoop hardness: 760
Optical stress coef.: 1.57 1/Pa*1012
Abrasion: 1

  Chemical
Climatic resistance: 1
Staining: 0
Resistance to acids: 4
Resistance to alkalis: 1
Phosphate resistance: 1

 Temperature coefficient of linear expansion
Temp. range, CValue, 1/C*10^-7
-30 ~ 7062
20 ~ 30072

 Temperature coefs. of nabs
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -201.5
20 ~ 402.4
60 ~ 802.9
-40 ~ -20e2.7
20 ~ 40e3.8
60 ~ 80e4.5
-40 ~ -20g3.9
20 ~ 40g5.2
60 ~ 80g6
 Temperature coefs. of nrel
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -204
20 ~ 404
60 ~ 804.2
-40 ~ -20e5.2
20 ~ 40e5.4
60 ~ 80e5.7
-40 ~ -20g6.4
20 ~ 40g6.8
60 ~ 80g7.2