SK12 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

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Main parameters
n_d = 1.583130 n_e = 1.585474	V_d = 59.33 V_e = 59.06	n_F - n_C = 0.009826 n_F' - n_C' = 0.009912	Coloring: 0.30 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.4686816 C2 = -0.010094174 C3 = 0.013146927 C4 = 0.00042161799 C5 = -0.000024913233 C6 = 0.0000013187694

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.572090
n _s	1.574864
n _r	1.578446
n _C	1.580145
n _C'	1.580620
n _0.6328	1.581064
n _D	1.583043
n _d	1.583130
n _e	1.585474
n _F	1.589972
n _F'	1.590532
n _g	1.595317
n _h	1.599750
n _i	1.607299
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8196
P_C,A'	0.3466
P_d,C	0.3038
P_e,C	0.5422
P_g,d	1.2401
P_g,F	0.5439
P_h,g	0.4510
P_i,g	1.2193
P_C',t	0.8680
P_e,C'	0.4939
P_F',e	0.5147
P_i,F'	1.7062

transmittance: 10 mm
τ_0.3	0.029
τ_0.31	0.214
τ_0.32	0.487
τ_0.33	0.701
τ_0.34	0.826
τ_0.35	0.901
τ_0.36	0.943
τ_0.37	0.965
τ_0.38	0.974
τ_0.39	0.981
τ_0.4	0.985
τ_0.42	0.988
τ_0.44	0.99
τ_0.46	0.99
τ_0.48	0.994
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	0.982

transmittance: 25 mm
τ_0.31	0.021
τ_0.32	0.166
τ_0.33	0.411
τ_0.34	0.62
τ_0.35	0.771
τ_0.36	0.864
τ_0.37	0.916
τ_0.38	0.937
τ_0.39	0.954
τ_0.4	0.964
τ_0.42	0.971
τ_0.44	0.975
τ_0.46	0.975
τ_0.48	0.985
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	0.957

Poisson coef.: 0.25
Rigidity: 326 Pa*10⁸
Young module: 816 Pa*10⁸
Knoop hardness: 576
Abrasion: 130

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	78