STK16 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.785947 n_e = 1.790044	V_d = 45.61 V_e = 45.35	n_F - n_C = 0.017231 n_F' - n_C' = 0.017417

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.78693 C3 = 0.0329344 C4 = -0.0135606 C5 = -0.00162391 C6 = -0.000267857 C7 = 0.000126635 C8 = 0.000669771 C9 = -0.0005359 C10 = -0.00114894 C11 = 0.000693135

Refraction index
n _2.3254	1.743230
n _1.9701	1.750227
n _1.5296	1.757995
n _1.06	1.766486
n _t	1.767509
n _s	1.771906
n _r	1.777883
n _C	1.780784
n _C'	1.781601
n _0.6328	1.782366
n _D	1.785795
n _d	1.785947
n _e	1.790044
n _F	1.798016
n _F'	1.799018
n _g	1.807656
n _h	1.815763
n _i	1.829996
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7704
P_C,A'	0.3355
P_d,C	0.2996
P_e,C	0.5374
P_g,d	1.2598
P_g,F	0.5594
P_h,g	0.4705
P_i,g	1.2964
P_C',t	0.8178
P_e,C'	0.4900
P_F',e	0.5207
P_i,F'	1.7977

Density: 4.61 g/cm³
Optical stress coef.: 1.85 1/Pa*10¹²
Abrasion: 1.14

Climatic resistance: у
Resistance to acids: IV

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	58
0 ~ 30	61
20 ~ 120	66
20 ~ 300	75