LF8 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.557515 n_e = 1.560663	V_d = 41.99 V_e = 41.69	n_F - n_C = 0.013276 n_F' - n_C' = 0.013445

Type: Resnik
Spectral range: 0.36501 - 1.8 mkm.
C1 = 0.028 C2 = 1.56346 C3 = 0.0252236 C4 = -0.00446477 C5 = 0.0000753933 C6 = -0.000206558 C7 = 0.000461869 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	1.536633
n _1.06	1.542882
n _t	1.543641
n _s	1.546915
n _r	1.551393
n _C	1.553585
n _C'	1.554204
n _0.6328	1.554784
n _D	1.557399
n _d	1.557515
n _e	1.560663
n _F	1.566861
n _F'	1.567649
n _g	1.574542
n _h	1.581230
n _i	1.593477
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7489
P_C,A'	0.3280
P_d,C	0.2960
P_e,C	0.5331
P_g,d	1.2824
P_g,F	0.5785
P_h,g	0.5037
P_i,g	1.4261
P_C',t	0.7955
P_e,C'	0.4864
P_F',e	0.5262
P_i,F'	1.9453

Density: 2.57 g/cm³
Poisson coef.: 0.239
Young module: 668 Pa*10⁸
Optical stress coef.: 3.1 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	84
0 ~ 30	87
20 ~ 120	90
20 ~ 300	96