TBF9 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.808468 n_e = 1.812961	V_d = 42.77 V_e = 42.51	n_F - n_C = 0.018901 n_F' - n_C' = 0.019120

Type: Resnik
Spectral range: 0.365 - 2.6 mkm.
C1 = 0.028 C2 = 1.81166 C3 = 0.0363003 C4 = -0.0113279 C5 = -0.00148265 C6 = -0.0000583378 C7 = 0.0000496602 C8 = -0.0000844442 C9 = -0.000293631 C10 = -0.000814034 C11 = 0.00035625

Refraction index
n _2.3254	1.766673
n _1.9701	1.772691
n _1.5296	1.779496
n _1.06	1.787679
n _t	1.788724
n _s	1.793310
n _r	1.799697
n _C	1.802838
n _C'	1.803725
n _0.6328	1.804558
n _D	1.808301
n _d	1.808468
n _e	1.812961
n _F	1.821739
n _F'	1.822846
n _g	1.832401
n _h	1.841403
n _i	1.857122
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7467
P_C,A'	0.3299
P_d,C	0.2978
P_e,C	0.5355
P_g,d	1.2662
P_g,F	0.5640
P_h,g	0.4762
P_i,g	1.3079
P_C',t	0.7936
P_e,C'	0.4886
P_F',e	0.5229
P_i,F'	1.8134

Density: 5.02 g/cm³
Optical stress coef.: 1.8 1/Pa*10¹²
Abrasion: 0.9

Climatic resistance: с
Resistance to acids: IV

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	60
0 ~ 30	63
20 ~ 120	68
20 ~ 300	75