BaSF8 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.723421 n_e = 1.727940	V_d = 37.97 V_e = 37.71	n_F - n_C = 0.019050 n_F' - n_C' = 0.019302	Coloring: 0.34 - 0.41 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8897009 C2 = -0.012081838 C3 = 0.025663767 C4 = 0.0014303905 C5 = -0.00009480902 C6 = 0.0000087572103

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.703969
n _s	1.708440
n _r	1.714701
n _C	1.717807
n _C'	1.718688
n _0.6328	1.719516
n _D	1.723254
n _d	1.723421
n _e	1.727940
n _F	1.736858
n _F'	1.737990
n _g	1.747869
n _h	1.757380
n _i	1.774539
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7263
P_C,A'	0.3227
P_d,C	0.2946
P_e,C	0.5319
P_g,d	1.2833
P_g,F	0.5780
P_h,g	0.4992
P_i,g	1.3999
P_C',t	0.7726
P_e,C'	0.4856
P_F',e	0.5275
P_i,F'	1.9185

transmittance: 10 mm
τ_0.34	0.021
τ_0.35	0.158
τ_0.36	0.43
τ_0.37	0.631
τ_0.38	0.762
τ_0.39	0.846
τ_0.4	0.897
τ_0.42	0.95
τ_0.44	0.974
τ_0.46	0.982
τ_0.48	0.988
τ_0.5	0.994
τ_0.55	0.995
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.995
τ_1.5	0.985
τ₂	0.967

transmittance: 25 mm
τ_0.36	0.121
τ_0.37	0.317
τ_0.38	0.507
τ_0.39	0.659
τ_0.4	0.762
τ_0.42	0.88
τ_0.44	0.937
τ_0.46	0.957
τ_0.48	0.971
τ_0.5	0.985
τ_0.55	0.989
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.989
τ_1.5	0.964
τ₂	0.92

Poisson coef.: 0.274
Rigidity: 322 Pa*10⁸
Young module: 820 Pa*10⁸
Knoop hardness: 537
Abrasion: 170

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	74