LF10 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.548104 n_e = 1.550942	V_d = 45.87 V_e = 45.58	n_F - n_C = 0.011947 n_F' - n_C' = 0.012086

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.54659 C3 = 0.0226595 C4 = -0.0103501 C5 = -0.000297369 C6 = -0.000274016 C7 = 0.00040334 C8 = -0.000204904 C9 = 0.000134582 C10 = 0.000073676 C11 = -0.000534753

Refraction index
n _2.3254	1.517814
n _1.9701	1.523042
n _1.5296	1.528641
n _1.06	1.534683
n _t	1.535400
n _s	1.538445
n _r	1.542546
n _C	1.544540
n _C'	1.545103
n _0.6328	1.545630
n _D	1.547998
n _d	1.548104
n _e	1.550942
n _F	1.556488
n _F'	1.557189
n _g	1.563282
n _h	1.569119
n _i	1.579308
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7650
P_C,A'	0.3323
P_d,C	0.2982
P_e,C	0.5358
P_g,d	1.2703
P_g,F	0.5685
P_h,g	0.4886
P_i,g	1.3413
P_C',t	0.8120
P_e,C'	0.4887
P_F',e	0.5228
P_i,F'	1.8512

Density: 2.73 g/cm³
Poisson coef.: 0.218
Rigidity: 273.5 Pa*10⁸
Young module: 666.4 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	72
0 ~ 30	74
20 ~ 120	78
20 ~ 300	84

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	1.2
-60 ~ 20	e	0.8
-60 ~ 20	D	0.6
-60 ~ 20	C	0.4
20 ~ 120	F	3.1
20 ~ 120	e	2.6
20 ~ 120	D	2.4
20 ~ 120	C	2.2