SF15 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.698951 n_e = 1.704447	V_d = 30.05 V_e = 29.82	n_F - n_C = 0.023257 n_F' - n_C' = 0.023622	Coloring: 0.37 - 0.41 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.7895665 C2 = -0.010181904 C3 = 0.029925345 C4 = 0.0018309044 C5 = -0.00010955329 C6 = 0.00001421907

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.676260
n _s	1.681257
n _r	1.688529
n _C	1.692210
n _C'	1.693261
n _0.6328	1.694250
n _D	1.698749
n _d	1.698951
n _e	1.704447
n _F	1.715467
n _F'	1.716884
n _g	1.729408
n _h	1.741770
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6858
P_C,A'	0.3114
P_d,C	0.2898
P_e,C	0.5261
P_g,d	1.3095
P_g,F	0.5994
P_h,g	0.5314
P_i,g	-----
P_C',t	0.7309
P_e,C'	0.4809
P_F',e	0.5347
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.054
τ_0.38	0.392
τ_0.39	0.714
τ_0.4	0.95
τ_0.42	0.975
τ_0.44	0.991
τ_0.46	0.995
τ_0.48	0.997
τ_0.5	0.997
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	0.991
τ_1.5	0.977
τ₂	0.94

transmittance: 25 mm
τ_0.38	0.096
τ_0.39	0.43
τ_0.4	0.88
τ_0.42	0.94
τ_0.44	0.978
τ_0.46	0.989
τ_0.48	0.992
τ_0.5	0.992
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	0.978
τ_1.5	0.944
τ₂	0.857

Poisson coef.: 0.232
Rigidity: 243 Pa*10⁸
Young module: 599 Pa*10⁸
Knoop hardness: 390
Abrasion: 190

Climatic resistance: 1
Resistance to acids: 1

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