OK2 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.550270 n_e = 1.552066	V_d = 73.10 V_e = 72.74	n_F - n_C = 0.007527 n_F' - n_C' = 0.007589

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.54868 C3 = 0.013801 C4 = -0.0072746 C5 = -0.00107209 C6 = -0.000159006 C7 = 0.000101328 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.529474
n _1.9701	1.533133
n _1.5296	1.537099
n _1.06	1.541346
n _t	1.541843
n _s	1.543930
n _r	1.546670
n _C	1.547976
n _C'	1.548341
n _0.6328	1.548682
n _D	1.550203
n _d	1.550270
n _e	1.552066
n _F	1.555503
n _F'	1.555930
n _g	1.559570
n _h	1.562929
n _i	1.568625
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8147
P_C,A'	0.3475
P_d,C	0.3047
P_e,C	0.5434
P_g,d	1.2354
P_g,F	0.5402
P_h,g	0.4462
P_i,g	1.2028
P_C',t	0.8632
P_e,C'	0.4948
P_F',e	0.5133
P_i,F'	1.6863

Density: 3.82 g/cm³
Optical stress coef.: 0.6 1/Pa*10¹²
Abrasion: 0.23

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	122
0 ~ 30	129
20 ~ 120	130
20 ~ 300	148