S-TIL 2 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.540719 n_e = 1.543439	V_d = 47.22 V_e = 46.94	n_F - n_C = 0.011449 n_F' - n_C' = 0.011577	Coloring: 0.34 - 0.37 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.23401499 C2 = 0.0959796833 C3 = 1.20503991 C4 = 0.00869507801 C5 = 0.0465611429 C6 = 137.953301

Refraction index
n _2.3254	-----
n _1.9701	1.516260
n _1.5296	1.521761
n _1.06	1.527701
n _t	1.528405
n _s	1.531388
n _r	1.535372
n _C	1.537296
n _C'	1.537837
n _0.6328	1.538345
n _D	1.540618
n _d	1.540719
n _e	1.543439
n _F	1.548745
n _F'	1.549415
n _g	1.555215
n _h	1.560737
n _i	1.570523
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7765
P_C,A'	0.3352
P_d,C	0.2989
P_e,C	0.5365
P_g,d	1.2660
P_g,F	0.5650
P_h,g	0.4822
P_i,g	1.3370
P_C',t	0.8238
P_e,C'	0.4892
P_F',e	0.5218
P_i,F'	1.8436

transmittance: 10 mm
τ_0.34	0.04
τ_0.35	0.32
τ_0.36	0.66
τ_0.37	0.84
τ_0.38	0.925
τ_0.39	0.962
τ_0.4	0.979
τ_0.42	0.99
τ_0.44	0.994
τ_0.46	0.995
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.997
τ_1.2	0.997
τ_1.4	0.997
τ_1.6	0.995
τ_1.8	0.987
τ₂	0.97
τ_2.2	0.942
τ_2.4	0.917

Poisson coef.: 0.22
Rigidity: 286 Pa*10⁸
Young module: 699 Pa*10⁸
Knoop hardness: 500
Abrasion: 121

Climatic resistance: 2
Resistance to acids: 1
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	82
100 ~ 300	98

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.3
-20 ~ 0	t	1.3
0 ~ 20	t	1.4
20 ~ 40	t	1.5
40 ~ 60	t	1.5
60 ~ 80	t	1.5
-40 ~ -20	C'	1.7
-20 ~ 0	C'	1.7
0 ~ 20	C'	1.8
20 ~ 40	C'	1.9
40 ~ 60	C'	1.9
60 ~ 80	C'	2
-40 ~ -20		1.7
-20 ~ 0		1.8
0 ~ 20		1.8
20 ~ 40		1.9
40 ~ 60		1.9
60 ~ 80		2
-40 ~ -20	D	1.9
-20 ~ 0	D	1.9
0 ~ 20	D	2
20 ~ 40	D	2.1
40 ~ 60	D	2.1
60 ~ 80	D	2.2
-40 ~ -20	e	2
-20 ~ 0	e	2.1
0 ~ 20	e	2.2
20 ~ 40	e	2.3
40 ~ 60	e	2.3
60 ~ 80	e	2.4
-40 ~ -20	F	2.5
-20 ~ 0	F	2.6
0 ~ 20	F	2.6
20 ~ 40	F	2.7
40 ~ 60	F	2.8
60 ~ 80	F	2.9
-40 ~ -20	g	2.9
-20 ~ 0	g	3
0 ~ 20	g	3.1
20 ~ 40	g	3.3
40 ~ 60	g	3.4
60 ~ 80	g	3.5