LK7 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.482865 n_e = 1.484604	V_d = 66.33 V_e = 66.17	n_F - n_C = 0.007279 n_F' - n_C' = 0.007322

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.47723 C3 = 0.0128791 C4 = -0.0116738 C5 = -0.00105913 C6 = -0.000617924 C7 = 0.000139262 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.456150
n _1.9701	1.461975
n _1.5296	1.467914
n _1.06	1.473513
n _t	1.474101
n _s	1.476444
n _r	1.479300
n _C	1.480610
n _C'	1.480973
n _0.6328	1.481310
n _D	1.482800
n _d	1.482865
n _e	1.484604
n _F	1.487890
n _F'	1.488295
n _g	1.491736
n _h	1.494896
n _i	1.500244
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8941
P_C,A'	0.3644
P_d,C	0.3097
P_e,C	0.5486
P_g,d	1.2186
P_g,F	0.5284
P_h,g	0.4340
P_i,g	1.1686
P_C',t	0.9438
P_e,C'	0.4988
P_F',e	0.5070
P_i,F'	1.6413

Density: 2.3 g/cm³
Poisson coef.: 0.191
Rigidity: 285.1 Pa*10⁸
Young module: 679.1 Pa*10⁸
Optical stress coef.: 3.52 1/Pa*10¹²
Abrasion: 1.4

Climatic resistance: А
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	40
0 ~ 30	41
20 ~ 120	44
20 ~ 300	48

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	3.8
-60 ~ 20	e	3.6
-60 ~ 20	D	3.4
-60 ~ 20	C	3.4
20 ~ 120	F	5.4
20 ~ 120	e	5.2
20 ~ 120	D	5
20 ~ 120	C	5