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BSL22 - O'Hara

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

  Main parameters
nd = 1.518205
ne = 1.520107
Vd = 65.03
Ve = 64.86
nF - nC = 0.007967
nF' - nC' = 0.008017
Coloring:
0.29 - 0.34 mkm.

  Coefficients of dispertion formulas
Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2739528 C2 = -0.0091160058 C3 = 0.01226882 C4 = -0.00031677862 C5 = 0.000060075221 C6 = -0.0000028098187

  Refraction index
n 2.3254-----
n 1.9701-----
n 1.5296-----
n 1.06-----
n t1.508729
n s1.511216
n r1.514314
n C1.515742
n C'1.516138
n 0.63281.516506
n D1.518134
n d1.518205
n e1.520107
n F1.523710
n F'1.524156
n g1.527952
n h1.531452
n i1.537354
n 0.3341-----
n 0.3126-----
n 0.2967-----
n 0.2804-----
n 0.2483-----
  Relative partial dispertion
PC,t0.8801
PC,A'0.3626
Pd,C0.3091
Pe,C0.5477
Pg,d1.2232
Pg,F0.5324
Ph,g0.4392
Pi,g1.1801
PC',t0.9297
Pe,C'0.4981
PF',e0.5081
Pi,F'1.6565
 transmittance: 10 mm
τ0.350.941
τ0.360.968
τ0.370.979
τ0.380.98
τ0.390.99
τ0.40.994
τ0.420.994
τ0.440.994
τ0.460.995
τ0.480.996
τ0.50.996
τ0.550.997
τ0.60.996
τ0.650.996
τ0.70.997
τ0.80.998
τ0.90.997

  mechanical
Poisson coef.: 0.205
Rigidity: 345 Pa*108
Young module: 830 Pa*108
Knoop hardness: 570
Abrasion: 98

  Chemical
Climatic resistance: 1
Resistance to acids: 1
Phosphate resistance: 1

 Temperature coefficient of linear expansion
Temp. range, CValue, 1/C*10^-7
-30 ~ 7071
100 ~ 30082

 Temperature coefs. of nrel
Temp. range,
C
Wave length,
mkm.
Value,
1/C*10-6
-40 ~ -20C'2.4
-20 ~ 0C'2.5
0 ~ 20C'2.6
20 ~ 40C'2.7
40 ~ 60C'2.8
60 ~ 80C'2.9
-40 ~ -20D2.5
-20 ~ 0D2.6
0 ~ 20D2.7
20 ~ 40D2.9
40 ~ 60D3
60 ~ 80D3.1
-40 ~ -20e2.6
-20 ~ 0e2.7
0 ~ 20e2.8
20 ~ 40e3
40 ~ 60e3.1
60 ~ 80e3.3
-40 ~ -20F2.9
-20 ~ 0F3
0 ~ 20F3.1
20 ~ 40F3.2
40 ~ 60F3.4
60 ~ 80F3.5
-40 ~ -20g3.1
-20 ~ 0g3.2
0 ~ 20g3.3
20 ~ 40g3.5
40 ~ 60g3.7
60 ~ 80g3.9