LF12 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.540208 n_e = 1.543065	V_d = 44.87 V_e = 44.57	n_F - n_C = 0.012039 n_F' - n_C' = 0.012183

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.53946 C3 = 0.0230776 C4 = -0.0102263 C5 = -0.000172671 C6 = -0.000330891 C7 = 0.000361491 C8 = 0.000290101 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.509936
n _1.9701	1.515082
n _1.5296	1.520700
n _1.06	1.526727
n _t	1.527444
n _s	1.530501
n _r	1.534624
n _C	1.536628
n _C'	1.537193
n _0.6328	1.537723
n _D	1.540103
n _d	1.540208
n _e	1.543065
n _F	1.548667
n _F'	1.549377
n _g	1.555566
n _h	1.561529
n _i	1.572330
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7628
P_C,A'	0.3314
P_d,C	0.2973
P_e,C	0.5346
P_g,d	1.2756
P_g,F	0.5730
P_h,g	0.4953
P_i,g	1.3924
P_C',t	0.8098
P_e,C'	0.4876
P_F',e	0.5243
P_i,F'	1.9064

Density: 2.54 g/cm³
Poisson coef.: 0.234
Young module: 654 Pa*10⁸
Optical stress coef.: 3.1 1/Pa*10¹²

Climatic resistance: А
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	86
0 ~ 30	88
20 ~ 120	91
20 ~ 300	97