LF5 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.575019 n_e = 1.578322	V_d = 41.31 V_e = 41.03	n_F - n_C = 0.013919 n_F' - n_C' = 0.014092

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.57635 C3 = 0.0268739 C4 = -0.00953903 C5 = -0.000333065 C6 = -0.000481841 C7 = 0.000325211 C8 = 0.000198382 C9 = -0.000101965 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.543173
n _1.9701	1.548141
n _1.5296	1.553591
n _1.06	1.559776
n _t	1.560549
n _s	1.563923
n _r	1.568596
n _C	1.570894
n _C'	1.571543
n _0.6328	1.572153
n _D	1.574897
n _d	1.575019
n _e	1.578322
n _F	1.584813
n _F'	1.585635
n _g	1.592802
n _h	1.599680
n _i	1.611971
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7431
P_C,A'	0.3276
P_d,C	0.2964
P_e,C	0.5336
P_g,d	1.2775
P_g,F	0.5739
P_h,g	0.4941
P_i,g	1.3771
P_C',t	0.7898
P_e,C'	0.4870
P_F',e	0.5254
P_i,F'	1.8920

Density: 3.23 g/cm³
Poisson coef.: 0.204
Rigidity: 230.8 Pa*10⁸
Young module: 555.7 Pa*10⁸
Optical stress coef.: 3.26 1/Pa*10¹²
Abrasion: 0.8

Climatic resistance: А
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	68
0 ~ 30	69
20 ~ 120	72
20 ~ 300	75

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	3.1
-60 ~ 20	e	2.5
-60 ~ 20	D	2.3
-60 ~ 20	C	2
20 ~ 120	F	5.1
20 ~ 120	e	4.5
20 ~ 120	D	4.2
20 ~ 120	C	3.8