F8 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.624948 n_e = 1.629110	V_d = 35.57 V_e = 35.31	n_F - n_C = 0.017568 n_F' - n_C' = 0.017816

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.62847 C3 = 0.0343428 C4 = -0.00903154 C5 = 0.000323144 C6 = -0.000572055 C7 = 0.0000479423 C8 = -0.000284124 C9 = 0.000249458 C10 = 0.000699395 C11 = 0

Refraction index
n _2.3254	1.589395
n _1.9701	1.594236
n _1.5296	1.599625
n _1.06	1.606376
n _t	1.607276
n _s	1.611280
n _r	1.616966
n _C	1.619802
n _C'	1.620608
n _0.6328	1.621366
n _D	1.624795
n _d	1.624948
n _e	1.629110
n _F	1.637371
n _F'	1.638424
n _g	1.647652
n _h	1.656589
n _i	1.672873
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7129
P_C,A'	0.3190
P_d,C	0.2929
P_e,C	0.5297
P_g,d	1.2922
P_g,F	0.5851
P_h,g	0.5087
P_i,g	1.4356
P_C',t	0.7588
P_e,C'	0.4839
P_F',e	0.5301
P_i,F'	1.9608

Density: 3.61 g/cm³
Poisson coef.: 0.231
Young module: 548 Pa*10⁸
Optical stress coef.: 2.7 1/Pa*10¹²
Abrasion: 0.7

Climatic resistance: В
Resistance to acids: III

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	91
0 ~ 30	94
20 ~ 120	99
20 ~ 300	106