BK9 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.564682 n_e = 1.567093	V_d = 55.81 V_e = 55.52	n_F - n_C = 0.010117 n_F' - n_C' = 0.010212

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.56328 C3 = 0.0188168 C4 = -0.00925687 C5 = -0.00111742 C6 = -0.000432504 C7 = 0.000167343 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.537720
n _1.9701	1.542467
n _1.5296	1.547525
n _1.06	1.552935
n _t	1.553575
n _s	1.556285
n _r	1.559890
n _C	1.561622
n _C'	1.562108
n _0.6328	1.562562
n _D	1.564592
n _d	1.564682
n _e	1.567093
n _F	1.571740
n _F'	1.572320
n _g	1.577298
n _h	1.581946
n _i	1.589969
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7953
P_C,A'	0.3420
P_d,C	0.3024
P_e,C	0.5407
P_g,d	1.2469
P_g,F	0.5493
P_h,g	0.4593
P_i,g	1.2523
P_C',t	0.8433
P_e,C'	0.4927
P_F',e	0.5166
P_i,F'	1.7443

Density: 3.1 g/cm³
Poisson coef.: 0.243
Young module: 726 Pa*10⁸
Optical stress coef.: 2.95 1/Pa*10¹²
Abrasion: 0.8

Climatic resistance: А
Resistance to acids: II