TK23 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.589187 n_e = 1.591481	V_d = 61.28 V_e = 61.04	n_F - n_C = 0.009614 n_F' - n_C' = 0.009689

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.58535 C3 = 0.0175062 C4 = -0.0117063 C5 = -0.00129647 C6 = -0.000781774 C7 = 0.000130504 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.559378
n _1.9701	1.565352
n _1.5296	1.571478
n _1.06	1.577543
n _t	1.578219
n _s	1.581001
n _r	1.584568
n _C	1.586248
n _C'	1.586717
n _0.6328	1.587155
n _D	1.589101
n _d	1.589187
n _e	1.591481
n _F	1.595862
n _F'	1.596407
n _g	1.601045
n _h	1.605330
n _i	1.612613
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8351
P_C,A'	0.3512
P_d,C	0.3056
P_e,C	0.5442
P_g,d	1.2334
P_g,F	0.5390
P_h,g	0.4456
P_i,g	1.2032
P_C',t	0.8839
P_e,C'	0.4954
P_F',e	0.5123
P_i,F'	1.6857

Density: 3.24 g/cm³
Poisson coef.: 0.261
Rigidity: 327.5 Pa*10⁸
Young module: 826.1 Pa*10⁸
Optical stress coef.: 2.29 1/Pa*10¹²
Abrasion: 0.9

Climatic resistance: А
Resistance to acids: III

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	52
0 ~ 30	55
20 ~ 120	59
20 ~ 300	66

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	2
-60 ~ 20	e	1.7
-60 ~ 20	D	1.5
-60 ~ 20	C	1.4
20 ~ 120	F	3.5
20 ~ 120	e	3.2
20 ~ 120	D	3.1
20 ~ 120	C	3