K19 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.518775 n_e = 1.520781	V_d = 61.67 V_e = 61.42	n_F - n_C = 0.008411 n_F' - n_C' = 0.008478

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.51507 C3 = 0.0152968 C4 = -0.0102017 C5 = -0.00102389 C6 = -0.000270269 C7 = 0.0000651444 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.492692
n _1.9701	1.497756
n _1.5296	1.503122
n _1.06	1.508537
n _t	1.509138
n _s	1.511602
n _r	1.514735
n _C	1.516206
n _C'	1.516616
n _0.6328	1.516998
n _D	1.518700
n _d	1.518775
n _e	1.520781
n _F	1.524617
n _F'	1.525094
n _g	1.529164
n _h	1.532931
n _i	1.539338
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8401
P_C,A'	0.3517
P_d,C	0.3054
P_e,C	0.5439
P_g,d	1.2351
P_g,F	0.5406
P_h,g	0.4478
P_i,g	1.2095
P_C',t	0.8889
P_e,C'	0.4952
P_F',e	0.5127
P_i,F'	1.6934

Density: 2.62 g/cm³
Poisson coef.: 0.219
Rigidity: 289.4 Pa*10⁸
Young module: 705.6 Pa*10⁸
Optical stress coef.: 2.96 1/Pa*10¹²
Abrasion: 0.9

Climatic resistance: А
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	74
0 ~ 30	76
20 ~ 120	80
20 ~ 300	87

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	0.9
-60 ~ 20	e	0.6
-60 ~ 20	D	0.5
-60 ~ 20	C	0.3
20 ~ 120	F	1.9
20 ~ 120	e	1.6
20 ~ 120	D	1.5
20 ~ 120	C	1.3