SF19 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.666800 n_e = 1.671570	V_d = 33.09 V_e = 32.85	n_F - n_C = 0.020148 n_F' - n_C' = 0.020442	Coloring: 0.34 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6946895 C2 = -0.0094341368 C3 = 0.026509398 C4 = 0.0012938458 C5 = -0.000059141879 C6 = 0.0000083247213

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.646799
n _s	1.651265
n _r	1.657690
n _C	1.660919
n _C'	1.661838
n _0.6328	1.662704
n _D	1.666625
n _d	1.666800
n _e	1.671570
n _F	1.681067
n _F'	1.682281
n _g	1.692950
n _h	1.703349
n _i	1.722410
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7007
P_C,A'	0.3160
P_d,C	0.2919
P_e,C	0.5286
P_g,d	1.2978
P_g,F	0.5897
P_h,g	0.5161
P_i,g	1.4621
P_C',t	0.7464
P_e,C'	0.4830
P_F',e	0.5316
P_i,F'	1.9916

transmittance: 10 mm
τ_0.34	0.129
τ_0.35	0.477
τ_0.36	0.721
τ_0.37	0.848
τ_0.38	0.908
τ_0.39	0.95
τ_0.4	0.972
τ_0.42	0.991
τ_0.44	0.994
τ_0.46	0.998
τ_0.48	0.998
τ_0.5	0.998
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.994
τ_1.5	0.99
τ₂	0.958

transmittance: 25 mm
τ_0.35	0.157
τ_0.36	0.442
τ_0.37	0.662
τ_0.38	0.786
τ_0.39	0.88
τ_0.4	0.933
τ_0.42	0.978
τ_0.44	0.985
τ_0.46	0.996
τ_0.48	0.996
τ_0.5	0.996
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.985
τ_1.5	0.975
τ₂	0.9

Poisson coef.: 0.23
Rigidity: 235 Pa*10⁸
Young module: 579 Pa*10⁸
Knoop hardness: 418
Abrasion: 180

Climatic resistance: 1
Resistance to acids: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	89