SF2 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.647691 n_e = 1.652218	V_d = 33.87 V_e = 33.63	n_F - n_C = 0.019117 n_F' - n_C' = 0.019393	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6357555 C2 = -0.0088369978 C3 = 0.025530657 C4 = 0.0010085256 C5 = -0.000027211205 C6 = 0.0000061064321

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.628630
n _s	1.632900
n _r	1.639029
n _C	1.642102
n _C'	1.642977
n _0.6328	1.643799
n _D	1.647524
n _d	1.647691
n _e	1.652218
n _F	1.661220
n _F'	1.662370
n _g	1.672469
n _h	1.682300
n _i	1.700259
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7047
P_C,A'	0.3172
P_d,C	0.2923
P_e,C	0.5291
P_g,d	1.2960
P_g,F	0.5884
P_h,g	0.5142
P_i,g	1.4536
P_C',t	0.7504
P_e,C'	0.4833
P_F',e	0.5310
P_i,F'	1.9819

transmittance: 10 mm
τ_0.33	0.042
τ_0.34	0.376
τ_0.35	0.701
τ_0.36	0.86
τ_0.37	0.932
τ_0.38	0.954
τ_0.39	0.975
τ_0.4	0.982
τ_0.42	0.99
τ_0.44	0.991
τ_0.46	0.992
τ_0.48	0.994
τ_0.5	0.994
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.995
τ_1.5	0.988
τ₂	0.94

transmittance: 25 mm
τ_0.34	0.087
τ_0.35	0.411
τ_0.36	0.686
τ_0.37	0.838
τ_0.38	0.89
τ_0.39	0.94
τ_0.4	0.957
τ_0.42	0.975
τ_0.44	0.978
τ_0.46	0.982
τ_0.48	0.985
τ_0.5	0.985
τ_0.55	0.989
τ_0.6	0.989
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.989
τ_1.5	0.971
τ₂	0.857

Poisson coef.: 0.232
Rigidity: 217 Pa*10⁸
Young module: 535 Pa*10⁸
Knoop hardness: 369
Abrasion: 170

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	96