S-TIH18 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.721506 n_e = 1.727330	V_d = 29.23 V_e = 28.99	n_F - n_C = 0.024681 n_F' - n_C' = 0.025081	Coloring: 0.36 - 0.41 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 1.59921608 C2 = 0.259532164 C3 = 2.12454543 C4 = 0.0116469304 C5 = 0.0584824883 C6 = 186.927779

Refraction index
n _2.3254	-----
n _1.9701	1.680024
n _1.5296	1.687149
n _1.06	1.696143
n _t	1.697343
n _s	1.702724
n _r	1.710469
n _C	1.714371
n _C'	1.715483
n _0.6328	1.716531
n _D	1.721293
n _d	1.721506
n _e	1.727330
n _F	1.739052
n _F'	1.740565
n _g	1.753995
n _h	1.767352
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6898
P_C,A'	0.3114
P_d,C	0.2891
P_e,C	0.5250
P_g,d	1.3162
P_g,F	0.6053
P_h,g	0.5411
P_i,g	-----
P_C',t	0.7349
P_e,C'	0.4799
P_F',e	0.5361
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.18
τ_0.38	0.54
τ_0.39	0.77
τ_0.4	0.87
τ_0.42	0.951
τ_0.44	0.971
τ_0.46	0.979
τ_0.48	0.984
τ_0.5	0.988
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.993
τ_0.7	0.995
τ_0.8	0.998
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.996
τ_1.6	0.995
τ_1.8	0.986
τ₂	0.978
τ_2.2	0.948
τ_2.4	0.928

Poisson coef.: 0.248
Rigidity: 357 Pa*10⁸
Young module: 891 Pa*10⁸
Knoop hardness: 560
Abrasion: 154

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	83
100 ~ 300	98

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.1
-20 ~ 0	t	1.2
0 ~ 20	t	1.3
20 ~ 40	t	1.4
40 ~ 60	t	1.5
60 ~ 80	t	1.6
-40 ~ -20	C'	1.8
-20 ~ 0	C'	1.9
0 ~ 20	C'	2
20 ~ 40	C'	2.2
40 ~ 60	C'	2.3
60 ~ 80	C'	2.4
-40 ~ -20		1.8
-20 ~ 0		2
0 ~ 20		2.2
20 ~ 40		2.3
40 ~ 60		2.5
60 ~ 80		2.6
-40 ~ -20	D	2.2
-20 ~ 0	D	2.3
0 ~ 20	D	2.5
20 ~ 40	D	2.7
40 ~ 60	D	2.8
60 ~ 80	D	3
-40 ~ -20	e	2.5
-20 ~ 0	e	2.7
0 ~ 20	e	2.9
20 ~ 40	e	3.1
40 ~ 60	e	3.3
60 ~ 80	e	3.5
-40 ~ -20	F	3.5
-20 ~ 0	F	3.8
0 ~ 20	F	4
20 ~ 40	F	4.3
40 ~ 60	F	4.5
60 ~ 80	F	4.8
-40 ~ -20	g	4.7
-20 ~ 0	g	5
0 ~ 20	g	5.3
20 ~ 40	g	5.7
40 ~ 60	g	6
60 ~ 80	g	6.3