LK4 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.490368 n_e = 1.492166	V_d = 65.11 V_e = 64.94	n_F - n_C = 0.007530 n_F' - n_C' = 0.007578

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.48454 C3 = 0.0133461 C4 = -0.0118059 C5 = -0.00101807 C6 = -0.000504867 C7 = 0.0000627115 C8 = -0.000154926 C9 = 0.0000796293 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.463118
n _1.9701	1.468996
n _1.5296	1.475009
n _1.06	1.480746
n _t	1.481351
n _s	1.483758
n _r	1.486694
n _C	1.488042
n _C'	1.488415
n _0.6328	1.488763
n _D	1.490300
n _d	1.490368
n _e	1.492166
n _F	1.495572
n _F'	1.495993
n _g	1.499569
n _h	1.502859
n _i	1.508465
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8884
P_C,A'	0.3623
P_d,C	0.3088
P_e,C	0.5476
P_g,d	1.2219
P_g,F	0.5307
P_h,g	0.4368
P_i,g	1.1812
P_C',t	0.9380
P_e,C'	0.4980
P_F',e	0.5082
P_i,F'	1.6561

Density: 2.33 g/cm³
Poisson coef.: 0.305
Rigidity: 363.9 Pa*10⁸
Young module: 636 Pa*10⁸
Optical stress coef.: 3.67 1/Pa*10¹²
Abrasion: 0.9

Climatic resistance: A
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	50
0 ~ 30	51
20 ~ 120	52
20 ~ 300	54

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	2.3
-60 ~ 20	e	2.1
-60 ~ 20	D	2
-60 ~ 20	C	1.9
20 ~ 120	F	4
20 ~ 120	e	3.8
20 ~ 120	D	3.7
20 ~ 120	C	3.6