FK14 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.579980 n_e = 1.582107	V_d = 65.09 V_e = 64.82	n_F - n_C = 0.008909 n_F' - n_C' = 0.008978

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.5768 C3 = 0.0162184 C4 = -0.0102023 C5 = -0.00124487 C6 = -0.000458184 C7 = 0.000121722 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.553168
n _1.9701	1.558320
n _1.5296	1.563724
n _1.06	1.569216
n _t	1.569836
n _s	1.572400
n _r	1.575699
n _C	1.577256
n _C'	1.577691
n _0.6328	1.578096
n _D	1.579901
n _d	1.579980
n _e	1.582107
n _F	1.586166
n _F'	1.586670
n _g	1.590962
n _h	1.594921
n _i	1.601638
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8328
P_C,A'	0.3511
P_d,C	0.3057
P_e,C	0.5443
P_g,d	1.2325
P_g,F	0.5382
P_h,g	0.4444
P_i,g	1.1982
P_C',t	0.8815
P_e,C'	0.4956
P_F',e	0.5121
P_i,F'	1.6799

Density: 3.39 g/cm³
Poisson coef.: 0.256
Young module: 585 Pa*10⁸
Optical stress coef.: 1.4 1/Pa*10¹²
Abrasion: 0.2

Climatic resistance: д
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	87
0 ~ 30	91
20 ~ 120	97
20 ~ 300	107

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	-4.1
-60 ~ 20	e	-4.4
-60 ~ 20	D	-4.5
-60 ~ 20	C	-4.6
20 ~ 120	F	-3.3
20 ~ 120	e	-3.6
20 ~ 120	D	-3.7
20 ~ 120	C	-3.8