STF11 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 2.056237 n_e = 2.071074	V_d = 16.63 V_e = 16.49	n_F - n_C = 0.063513 n_F' - n_C' = 0.064920

Type: Resnik
Spectral range: 0.43583 - 2.6 mkm.
C1 = 0.028 C2 = 2.05183 C3 = 0.0807173 C4 = -0.00767053 C5 = 0.0049971 C6 = -0.0000506383 C7 = 0.00234788 C8 = 0.00116216 C9 = -0.000465919 C10 = -0.00193909 C11 = 0

Refraction index
n _2.3254	1.969756
n _1.9701	1.975274
n _1.5296	1.983332
n _1.06	1.997776
n _t	2.000107
n _s	2.011410
n _r	2.029217
n _C	2.038591
n _C'	2.041303
n _0.6328	2.043870
n _D	2.055700
n _d	2.056237
n _e	2.071074
n _F	2.102104
n _F'	2.106223
n _g	2.143940
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	0.6059
P_C,A'	0.2871
P_d,C	0.2778
P_e,C	0.5114
P_g,d	1.3808
P_g,F	0.6586
P_h,g	-----
P_i,g	-----
P_C',t	0.6486
P_e,C'	0.4687
P_F',e	0.5534
P_i,F'	-----

Density: 6.79 g/cm³
Optical stress coef.: -2.35 1/Pa*10¹²
Abrasion: 0.18

Climatic resistance: у
Resistance to acids: VI

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	100
0 ~ 30	103
20 ~ 120	108
20 ~ 300	117