F1 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.612945 n_e = 1.616877	V_d = 36.95 V_e = 36.69	n_F - n_C = 0.016587 n_F' - n_C' = 0.016813

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.61595 C3 = 0.0323961 C4 = -0.00953619 C5 = 0.0000457987 C6 = -0.000380195 C7 = 0.000268587 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.577818
n _1.9701	1.582858
n _1.5296	1.588482
n _1.06	1.595220
n _t	1.596092
n _s	1.599942
n _r	1.605371
n _C	1.608068
n _C'	1.608833
n _0.6328	1.609552
n _D	1.612800
n _d	1.612945
n _e	1.616877
n _F	1.624656
n _F'	1.625646
n _g	1.634309
n _h	1.642682
n _i	1.657814
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7219
P_C,A'	0.3217
P_d,C	0.2940
P_e,C	0.5310
P_g,d	1.2879
P_g,F	0.5819
P_h,g	0.5047
P_i,g	1.4169
P_C',t	0.7681
P_e,C'	0.4849
P_F',e	0.5286
P_i,F'	1.9392

Density: 3.57 g/cm³
Poisson coef.: 0.221
Rigidity: 227.5 Pa*10⁸
Young module: 555.7 Pa*10⁸
Optical stress coef.: 2.96 1/Pa*10¹²
Abrasion: 0.5

Climatic resistance: А
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	70
0 ~ 30	72
20 ~ 120	75
20 ~ 300	79

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	3.9
-60 ~ 20	e	3.1
-60 ~ 20	D	2.7
-60 ~ 20	C	2.3
20 ~ 120	F	6.2
20 ~ 120	e	5.2
20 ~ 120	D	4.8
20 ~ 120	C	4.4