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© 2003-2013 ACO department

Политика по обработке Персональных данных

 

N-BALF4 - Schott 2000

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

  Main parameters
nd = 1.579559
ne = 1.582121
Vd = 53.86
Ve = 53.58
nF - nC = 0.010759
nF' - nC' = 0.010863
Coloring:
0.37 - 0.33 mkm.

  Coefficients of dispertion formulas
Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.31004128 C2 = 0.142038259 C3 = 0.964929351 C4 = 0.0079659645 C5 = 0.0330672072 C6 = 109.19732

  Refraction index
n 2.32541.550681
n 1.97011.555774
n 1.52961.561237
n 1.061.567070
n t1.567755
n s1.570646
n r1.574474
n C1.576311
n C'1.576826
n 0.63281.577308
n D1.579463
n d1.579559
n e1.582121
n F1.587070
n F'1.587690
n g1.593009
n h1.597986
n i1.606578
n 0.3341-----
n 0.3126-----
n 0.2967-----
n 0.2804-----
n 0.2483-----
  Relative partial dispertion
PC,t0.7952
PC,A'0.3412
Pd,C0.3018
Pe,C0.5400
Pg,d1.2501
Pg,F0.5519
Ph,g0.4625
Pi,g1.2611
PC',t0.8431
Pe,C'0.4921
PF',e0.5175
Pi,F'1.7555
 transmittance: 10 mm
τ2.50.8
τ2.32540.89
τ1.97010.967
τ1.52960.994
τ1.060.997
τ0.70.999
τ0.660.998
τ0.620.998
τ0.580.998
τ0.546070.998
τ0.50.997
τ0.460.994
τ0.43580.993
τ0.420.992
τ0.40470.988
τ0.40.985
τ0.390.976
τ0.380.959
τ0.370.92
τ0.3650.89
τ0.350.68
 transmittance: 25 mm
τ2.50.58
τ2.32540.74
τ1.97010.92
τ1.52960.984
τ1.060.993
τ0.70.997
τ0.660.995
τ0.620.995
τ0.580.996
τ0.546070.995
τ0.50.993
τ0.460.986
τ0.43580.983
τ0.420.981
τ0.40470.97
τ0.40.964
τ0.390.94
τ0.380.9
τ0.370.82
τ0.3650.75
τ0.350.38

  mechanical
Density: 3.11 g/cm3
Poisson coef.: 0.245
Young module: 770 Pa*108
Knoop hardness: 540
Optical stress coef.: 3.01 1/Pa*1012
Abrasion: 2

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

 Temperature coefficient of linear expansion
Temp. range, CValue, 1/C*10^-7
-30 ~ 7065
20 ~ 30074

 Temperature coefs. of nabs
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -202
20 ~ 402.9
60 ~ 803.4
-40 ~ -20e2.7
20 ~ 40e3.7
60 ~ 80e4.3
-40 ~ -20g3.4
20 ~ 40g4.6
60 ~ 80g5.3
 Temperature coefs. of nrel
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -204.1
20 ~ 404.2
60 ~ 804.4
-40 ~ -20e4.9
20 ~ 40e5.1
60 ~ 80e5.4
-40 ~ -20g5.6
20 ~ 40g6
60 ~ 80g6.4