TK12 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.568882 n_e = 1.571039	V_d = 62.93 V_e = 62.71	n_F - n_C = 0.009039 n_F' - n_C' = 0.009105

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.56406 C3 = 0.0163078 C4 = -0.011994 C5 = -0.00117427 C6 = -0.000472336 C7 = 0.00012183 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.539344
n _1.9701	1.545324
n _1.5296	1.551559
n _1.06	1.557700
n _t	1.558370
n _s	1.561093
n _r	1.564514
n _C	1.566108
n _C'	1.566552
n _0.6328	1.566966
n _D	1.568801
n _d	1.568882
n _e	1.571039
n _F	1.575148
n _F'	1.575658
n _g	1.580001
n _h	1.584012
n _i	1.590836
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8559
P_C,A'	0.3556
P_d,C	0.3068
P_e,C	0.5454
P_g,d	1.2300
P_g,F	0.5368
P_h,g	0.4437
P_i,g	1.1985
P_C',t	0.9050
P_e,C'	0.4963
P_F',e	0.5109
P_i,F'	1.6789

Density: 3.06 g/cm³
Poisson coef.: 0.243
Rigidity: 337 Pa*10⁸
Young module: 837.9 Pa*10⁸
Optical stress coef.: 2.4 1/Pa*10¹²
Abrasion: 0.8

Climatic resistance: А
Resistance to acids: III

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	58
0 ~ 30	61
20 ~ 120	65
20 ~ 300	73

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	1.1
-60 ~ 20	e	0.8
-60 ~ 20	D	0.7
-60 ~ 20	C	0.6
20 ~ 120	F	2.4
20 ~ 120	e	2.2
20 ~ 120	D	2.1
20 ~ 120	C	2