LF1 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.540698 n_e = 1.543419	V_d = 47.22 V_e = 46.94	n_F - n_C = 0.011448 n_F' - n_C' = 0.011574

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.54059 C3 = 0.0218046 C4 = -0.00958254 C5 = -0.000649229 C6 = -0.000617212 C7 = 0.000417828 C8 = 0.000502942 C9 = -0.000258504 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.511879
n _1.9701	1.516793
n _1.5296	1.522103
n _1.06	1.527763
n _t	1.528445
n _s	1.531371
n _r	1.535342
n _C	1.537269
n _C'	1.537812
n _0.6328	1.538320
n _D	1.540597
n _d	1.540698
n _e	1.543419
n _F	1.548718
n _F'	1.549386
n _g	1.555178
n _h	1.560688
n _i	1.570365
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7707
P_C,A'	0.3354
P_d,C	0.2994
P_e,C	0.5371
P_g,d	1.2647
P_g,F	0.5641
P_h,g	0.4812
P_i,g	1.3265
P_C',t	0.8181
P_e,C'	0.4897
P_F',e	0.5212
P_i,F'	1.8323

Density: 2.86 g/cm³
Poisson coef.: 0.216
Young module: 572 Pa*10⁸
Optical stress coef.: 3.1 1/Pa*10¹²
Abrasion: 0.9

Climatic resistance: В
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	80
0 ~ 30	81
20 ~ 120	83
20 ~ 300	89