BaSF7 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.701540 n_e = 1.705587	V_d = 41.15 V_e = 40.88	n_F - n_C = 0.017046 n_F' - n_C' = 0.017258	Coloring: 0.34 - 0.40 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8206362 C2 = -0.0097755527 C3 = 0.025187638 C4 = 0.00055949408 C5 = 0.0000056712448 C6 = 0.0000026424639

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.683929
n _s	1.687990
n _r	1.693679
n _C	1.696487
n _C'	1.697282
n _0.6328	1.698029
n _D	1.701390
n _d	1.701540
n _e	1.705587
n _F	1.713534
n _F'	1.714541
n _g	1.723294
n _h	1.731672
n _i	1.746619
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7366
P_C,A'	0.3267
P_d,C	0.2963
P_e,C	0.5337
P_g,d	1.2761
P_g,F	0.5725
P_h,g	0.4914
P_i,g	1.3683
P_C',t	0.7833
P_e,C'	0.4871
P_F',e	0.5252
P_i,F'	1.8818

transmittance: 10 mm
τ_0.34	0.022
τ_0.35	0.251
τ_0.36	0.552
τ_0.37	0.753
τ_0.38	0.85
τ_0.39	0.905
τ_0.4	0.939
τ_0.42	0.968
τ_0.44	0.981
τ_0.46	0.988
τ_0.48	0.99
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	0.997
τ₂	0.982

transmittance: 25 mm
τ_0.35	0.031
τ_0.36	0.226
τ_0.37	0.492
τ_0.38	0.667
τ_0.39	0.78
τ_0.4	0.854
τ_0.42	0.923
τ_0.44	0.954
τ_0.46	0.971
τ_0.48	0.975
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	0.992
τ₂	0.957

Poisson coef.: 0.27
Rigidity: 331 Pa*10⁸
Young module: 840 Pa*10⁸
Knoop hardness: 514
Abrasion: 160

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	76