OF1 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.529496 n_e = 1.531928	V_d = 51.81 V_e = 51.56	n_F - n_C = 0.010219 n_F' - n_C' = 0.010314

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.52625 C3 = 0.0189423 C4 = -0.0117417 C5 = -0.000914036 C6 = -0.00107517 C7 = -0.000130375 C8 = 0.000151484 C9 = -0.000156585 C10 = 0.000280574 C11 = 0.000370569

Refraction index
n _2.3254	1.498919
n _1.9701	1.504977
n _1.5296	1.511167
n _1.06	1.517329
n _t	1.518027
n _s	1.520918
n _r	1.524643
n _C	1.526404
n _C'	1.526896
n _0.6328	1.527355
n _D	1.529406
n _d	1.529496
n _e	1.531928
n _F	1.536623
n _F'	1.537211
n _g	1.542254
n _h	1.546955
n _i	1.555156
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8196
P_C,A'	0.3459
P_d,C	0.3026
P_e,C	0.5405
P_g,d	1.2483
P_g,F	0.5509
P_h,g	0.4600
P_i,g	1.2625
P_C',t	0.8678
P_e,C'	0.4924
P_F',e	0.5169
P_i,F'	1.7560

Density: 2.56 g/cm³
Poisson coef.: 0.225
Rigidity: 216.4 Pa*10⁸
Young module: 530.2 Pa*10⁸
Optical stress coef.: 3.98 1/Pa*10¹²
Abrasion: 0.9

Climatic resistance: А
Resistance to acids: IV

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	59
0 ~ 30	60
20 ~ 120	62
20 ~ 300	66

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	1.9
-60 ~ 20	e	1.6
-60 ~ 20	D	1.4
-60 ~ 20	C	1.3
20 ~ 120	F	3.8
20 ~ 120	e	3.4
20 ~ 120	D	3.2
20 ~ 120	C	3.1