BaF11 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.666720 n_e = 1.669998	V_d = 48.38 V_e = 48.09	n_F - n_C = 0.013780 n_F' - n_C' = 0.013932	Coloring: 0.34 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.7202013 C2 = -0.010140374 C3 = 0.019532939 C4 = 0.00062156879 C5 = -0.00003170161 C6 = 0.0000033154495

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.652069
n _s	1.655550
n _r	1.660290
n _C	1.662599
n _C'	1.663250
n _0.6328	1.663860
n _D	1.666599
n _d	1.666720
n _e	1.669998
n _F	1.676379
n _F'	1.677182
n _g	1.684118
n _h	1.690680
n _i	1.702229
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7640
P_C,A'	0.3335
P_d,C	0.2990
P_e,C	0.5369
P_g,d	1.2624
P_g,F	0.5615
P_h,g	0.4762
P_i,g	1.3143
P_C',t	0.8113
P_e,C'	0.4896
P_F',e	0.5213
P_i,F'	1.8176

transmittance: 10 mm
τ_0.34	0.05
τ_0.35	0.223
τ_0.36	0.528
τ_0.37	0.759
τ_0.38	0.873
τ_0.39	0.933
τ_0.4	0.963
τ_0.42	0.981
τ_0.44	0.985
τ_0.46	0.99
τ_0.48	0.991
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.978

transmittance: 25 mm
τ_0.35	0.023
τ_0.36	0.203
τ_0.37	0.503
τ_0.38	0.714
τ_0.39	0.842
τ_0.4	0.91
τ_0.42	0.954
τ_0.44	0.964
τ_0.46	0.975
τ_0.48	0.978
τ_0.5	0.989
τ_0.55	0.992
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.944

Poisson coef.: 0.278
Rigidity: 328 Pa*10⁸
Young module: 838 Pa*10⁸
Knoop hardness: 489
Abrasion: 180

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	86