K15 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.533583 n_e = 1.535874	V_d = 55.47 V_e = 55.18	n_F - n_C = 0.009618 n_F' - n_C' = 0.009709

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.53211 C3 = 0.0178866 C4 = -0.00876127 C5 = -0.00104019 C6 = -0.000219396 C7 = 0.0000603915 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.508021
n _1.9701	1.512447
n _1.5296	1.517244
n _1.06	1.522417
n _t	1.523027
n _s	1.525608
n _r	1.529032
n _C	1.530676
n _C'	1.531137
n _0.6328	1.531569
n _D	1.533497
n _d	1.533583
n _e	1.535874
n _F	1.540295
n _F'	1.540847
n _g	1.545583
n _h	1.549995
n _i	1.557557
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7951
P_C,A'	0.3416
P_d,C	0.3021
P_e,C	0.5404
P_g,d	1.2475
P_g,F	0.5497
P_h,g	0.4586
P_i,g	1.2448
P_C',t	0.8431
P_e,C'	0.4924
P_F',e	0.5169
P_i,F'	1.7372

Density: 2.76 g/cm³
Poisson coef.: 0.24
Young module: 682 Pa*10⁸
Optical stress coef.: 3.5 1/Pa*10¹²
Abrasion: 1

Climatic resistance: Б
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	82
0 ~ 30	86
20 ~ 120	93
20 ~ 300	104