STF3 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 2.170207 n_e = 2.186255	V_d = 17.02 V_e = ---	n_F - n_C = 0.068726 n_F' - n_C' = ---

Type: Resnik
Spectral range: 0.48613 - 2.6 mkm.
C1 = 0.028 C2 = 2.13954 C3 = 0.0644167 C4 = -0.0104748 C5 = 0.00339169 C6 = 0.000892396 C7 = -0.000617577 C8 = -0.000724132 C9 = 0.000934343 C10 = 0 C11 = 0

Refraction index
n _2.3254	2.074934
n _1.9701	2.081355
n _1.5296	2.090442
n _1.06	2.106572
n _t	2.109130
n _s	2.121447
n _r	2.140818
n _C	2.151028
n _C'	2.153980
n _0.6328	2.156773
n _D	2.169624
n _d	2.170207
n _e	2.186255
n _F	2.219754
n _F'	-----
n _g	-----
n _h	-----
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6096
P_C,A'	0.2889
P_d,C	0.2790
P_e,C	0.5125
P_g,d	-----
P_g,F	-----
P_h,g	-----
P_i,g	-----
P_C',t	0.6525
P_e,C'	0.4696
P_F',e	-----
P_i,F'	-----

Density: 6.13 g/cm³
Optical stress coef.: -1.4 1/Pa*10¹²
Abrasion: 0.22

Climatic resistance: с
Resistance to acids: III

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	116
0 ~ 30	119
20 ~ 120	123
20 ~ 300	130