SF8 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.688928 n_e = 1.694161	V_d = 31.14 V_e = 30.91	n_F - n_C = 0.022116 n_F' - n_C' = 0.022452	Coloring: 0.34 - 0.39 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.7609944 C2 = -0.010310236 C3 = 0.028353165 C4 = 0.001722932 C5 = -0.000095600346 C6 = 0.000011144821

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.667189
n _s	1.672009
n _r	1.678980
n _C	1.682498
n _C'	1.683501
n _0.6328	1.684446
n _D	1.688736
n _d	1.688928
n _e	1.694161
n _F	1.704615
n _F'	1.705954
n _g	1.717749
n _h	1.729290
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6921
P_C,A'	0.3133
P_d,C	0.2907
P_e,C	0.5273
P_g,d	1.3031
P_g,F	0.5938
P_h,g	0.5217
P_i,g	-----
P_C',t	0.7375
P_e,C'	0.4819
P_F',e	0.5332
P_i,F'	-----

transmittance: 10 mm
τ_0.34	0.107
τ_0.35	0.42
τ_0.36	0.666
τ_0.37	0.806
τ_0.38	0.878
τ_0.39	0.926
τ_0.4	0.954
τ_0.42	0.975
τ_0.44	0.982
τ_0.46	0.988
τ_0.48	0.99
τ_0.5	0.991
τ_0.55	0.994
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.992
τ₂	0.964

transmittance: 25 mm
τ_0.35	0.114
τ_0.36	0.363
τ_0.37	0.583
τ_0.38	0.722
τ_0.39	0.826
τ_0.4	0.89
τ_0.42	0.94
τ_0.44	0.957
τ_0.46	0.971
τ_0.48	0.975
τ_0.5	0.978
τ_0.55	0.985
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.982
τ₂	0.913

Poisson coef.: 0.229
Rigidity: 229 Pa*10⁸
Young module: 562 Pa*10⁸
Knoop hardness: 371
Abrasion: 180

Climatic resistance: 1
Resistance to acids: 1

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