BaK2 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.539962 n_e = 1.542119	V_d = 59.68 V_e = 59.41	n_F - n_C = 0.009047 n_F' - n_C' = 0.009124	Coloring: 0.30 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.3362609 C2 = -0.0083060435 C3 = 0.012795944 C4 = 0.000081144143 C5 = 0.000015937406 C6 = -0.00000060181372

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.529789
n _s	1.532333
n _r	1.535641
n _C	1.537209
n _C'	1.537647
n _0.6328	1.538057
n _D	1.539881
n _d	1.539962
n _e	1.542119
n _F	1.546257
n _F'	1.546772
n _g	1.551180
n _h	1.555270
n _i	1.562240
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8200
P_C,A'	0.3477
P_d,C	0.3042
P_e,C	0.5426
P_g,d	1.2398
P_g,F	0.5441
P_h,g	0.4520
P_i,g	1.2224
P_C',t	0.8685
P_e,C'	0.4942
P_F',e	0.5142
P_i,F'	1.7095

transmittance: 10 mm
τ_0.29	0.042
τ_0.3	0.251
τ_0.31	0.447
τ_0.32	0.675
τ_0.33	0.823
τ_0.34	0.901
τ_0.35	0.943
τ_0.36	0.964
τ_0.37	0.974
τ_0.38	0.975
τ_0.39	0.982
τ_0.4	0.985
τ_0.42	0.985
τ_0.44	0.985
τ_0.46	0.988
τ_0.48	0.988
τ_0.5	0.99
τ_0.55	0.994
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.997
τ₂	0.943

transmittance: 25 mm
τ_0.3	0.031
τ_0.31	0.134
τ_0.32	0.375
τ_0.33	0.615
τ_0.34	0.771
τ_0.35	0.864
τ_0.36	0.913
τ_0.37	0.937
τ_0.38	0.94
τ_0.39	0.957
τ_0.4	0.964
τ_0.42	0.964
τ_0.44	0.964
τ_0.46	0.971
τ_0.48	0.971
τ_0.5	0.975
τ_0.55	0.985
τ_0.6	0.989
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.992
τ₂	0.864

Poisson coef.: 0.232
Rigidity: 285 Pa*10⁸
Young module: 703 Pa*10⁸
Knoop hardness: 501
Abrasion: 120

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	92