OF5 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.662640 n_e = 1.666407	V_d = 41.77 V_e = 41.55	n_F - n_C = 0.015860 n_F' - n_C' = 0.016036

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.65902 C3 = 0.0299166 C4 = -0.0159948 C5 = -0.00058189 C6 = -0.000934291 C7 = 0.0000993756 C8 = -0.000305162 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.618816
n _1.9701	1.627051
n _1.5296	1.635575
n _1.06	1.644385
n _t	1.645400
n _s	1.649643
n _r	1.655219
n _C	1.657893
n _C'	1.658645
n _0.6328	1.659348
n _D	1.662500
n _d	1.662640
n _e	1.666407
n _F	1.673754
n _F'	1.674681
n _g	1.682710
n _h	1.690344
n _i	1.703817
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7876
P_C,A'	0.3370
P_d,C	0.2992
P_e,C	0.5368
P_g,d	1.2653
P_g,F	0.5646
P_h,g	0.4812
P_i,g	1.3307
P_C',t	0.8350
P_e,C'	0.4894
P_F',e	0.5216
P_i,F'	1.8369

Density: 3.6 g/cm³
Poisson coef.: 0.284
Young module: 678 Pa*10⁸
Optical stress coef.: 2.45 1/Pa*10¹²
Abrasion: 0.3

Climatic resistance: а
Resistance to acids: IV

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	46
0 ~ 30	49
20 ~ 120	53
20 ~ 300	60