SF14 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.761817 n_e = 1.768591	V_d = 26.51 V_e = 26.30	n_F - n_C = 0.028727 n_F' - n_C' = 0.029220	Coloring: 0.38 - 0.43 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.9839044 C2 = -0.012366504 C3 = 0.035131078 C4 = 0.0032071667 C5 = -0.00026153414 C6 = 0.000029127433

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.734410
n _s	1.740348
n _r	1.749099
n _C	1.753570
n _C'	1.754851
n _0.6328	1.756059
n _D	1.761569
n _d	1.761817
n _e	1.768591
n _F	1.782297
n _F'	1.784071
n _g	1.799889
n _h	1.815760
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6669
P_C,A'	0.3054
P_d,C	0.2870
P_e,C	0.5228
P_g,d	1.3252
P_g,F	0.6123
P_h,g	0.5524
P_i,g	-----
P_C',t	0.7115
P_e,C'	0.4782
P_F',e	0.5388
P_i,F'	-----

transmittance: 10 mm
τ_0.38	0.063
τ_0.39	0.299
τ_0.4	0.546
τ_0.42	0.808
τ_0.44	0.907
τ_0.46	0.948
τ_0.48	0.968
τ_0.5	0.975
τ_0.55	0.985
τ_0.6	0.985
τ_0.65	0.988
τ_0.7	0.992
τ_0.8	0.997
τ_1.06	0.982
τ_1.5	0.974
τ₂	0.954

transmittance: 25 mm
τ_0.39	0.049
τ_0.4	0.22
τ_0.42	0.588
τ_0.44	0.783
τ_0.46	0.877
τ_0.48	0.923
τ_0.5	0.94
τ_0.55	0.964
τ_0.6	0.964
τ_0.65	0.971
τ_0.7	0.982
τ_0.8	0.992
τ_1.06	0.957
τ_1.5	0.937
τ₂	0.89

Poisson coef.: 0.238
Rigidity: 254 Pa*10⁸
Young module: 629 Pa*10⁸
Knoop hardness: 397
Abrasion: 200

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	82