TF3 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.717419 n_e = 1.723164	V_d = 29.50 V_e = 29.28	n_F - n_C = 0.024311 n_F' - n_C' = 0.024694

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.7265 C3 = 0.0486981 C4 = -0.00916672 C5 = 0.00153354 C6 = -0.000459351 C7 = 0.000683051 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.673447
n _1.9701	1.678572
n _1.5296	1.684557
n _1.06	1.692633
n _t	1.693763
n _s	1.698933
n _r	1.706524
n _C	1.710373
n _C'	1.711471
n _0.6328	1.712506
n _D	1.717208
n _d	1.717419
n _e	1.723164
n _F	1.734685
n _F'	1.736166
n _g	1.749256
n _h	1.762150
n _i	1.786118
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6831
P_C,A'	0.3114
P_d,C	0.2898
P_e,C	0.5261
P_g,d	1.3094
P_g,F	0.5993
P_h,g	0.5303
P_i,g	1.5162
P_C',t	0.7283
P_e,C'	0.4809
P_F',e	0.5347
P_i,F'	2.0546

Density: 4.46 g/cm³
Poisson coef.: 0.221
Rigidity: 225.5 Pa*10⁸
Young module: 550.8 Pa*10⁸
Optical stress coef.: 1.84 1/Pa*10¹²
Abrasion: 0.5

Climatic resistance: А
Resistance to acids: III

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	77
0 ~ 30	79
20 ~ 120	83
20 ~ 300	90

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	6.2
-60 ~ 20	e	4.9
-60 ~ 20	D	4.2
-60 ~ 20	C	3.6
20 ~ 120	F	8.8
20 ~ 120	e	7.2
20 ~ 120	D	6.4
20 ~ 120	C	5.7