KF1 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.515380 n_e = 1.517631	V_d = 54.49 V_e = 54.22	n_F - n_C = 0.009457 n_F' - n_C' = 0.009545

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.51248 C3 = 0.0175178 C4 = -0.0102946 C5 = -0.000808481 C6 = -0.000408843 C7 = 0.000142307 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.487931
n _1.9701	1.493117
n _1.5296	1.498588
n _1.06	1.504191
n _t	1.504828
n _s	1.507468
n _r	1.510891
n _C	1.512517
n _C'	1.512972
n _0.6328	1.513398
n _D	1.515296
n _d	1.515380
n _e	1.517631
n _F	1.521975
n _F'	1.522518
n _g	1.527192
n _h	1.531579
n _i	1.539216
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8130
P_C,A'	0.3447
P_d,C	0.3026
P_e,C	0.5407
P_g,d	1.2489
P_g,F	0.5516
P_h,g	0.4639
P_i,g	1.2714
P_C',t	0.8612
P_e,C'	0.4926
P_F',e	0.5167
P_i,F'	1.7655

Density: 2.69 g/cm³
Poisson coef.: 0.213
Young module: 645 Pa*10⁸
Optical stress coef.: 3.15 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	63
0 ~ 30	64
20 ~ 120	66
20 ~ 300	69