S-TIH 3 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.739998 n_e = 1.746166	V_d = 28.29 V_e = 28.06	n_F - n_C = 0.026152 n_F' - n_C' = 0.026582	Coloring: 0.36 - 0.42 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 1.64797648 C2 = 0.267261917 C3 = 2.19772845 C4 = 0.0121917693 C5 = 0.0597893039 C6 = 192.15834

Refraction index
n _2.3254	-----
n _1.9701	1.696852
n _1.5296	1.704051
n _1.06	1.713304
n _t	1.714553
n _s	1.720182
n _r	1.728334
n _C	1.732452
n _C'	1.733628
n _0.6328	1.734735
n _D	1.739771
n _d	1.739998
n _e	1.746166
n _F	1.758604
n _F'	1.760211
n _g	1.774501
n _h	1.788755
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6844
P_C,A'	0.3100
P_d,C	0.2885
P_e,C	0.5243
P_g,d	1.3193
P_g,F	0.6078
P_h,g	0.5450
P_i,g	-----
P_C',t	0.7293
P_e,C'	0.4794
P_F',e	0.5370
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.16
τ_0.38	0.51
τ_0.39	0.74
τ_0.4	0.85
τ_0.42	0.94
τ_0.44	0.964
τ_0.46	0.975
τ_0.48	0.981
τ_0.5	0.986
τ_0.55	0.994
τ_0.6	0.994
τ_0.65	0.993
τ_0.7	0.995
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.997
τ_1.6	0.996
τ_1.8	0.988
τ₂	0.98
τ_2.2	0.955
τ_2.4	0.933

Poisson coef.: 0.254
Rigidity: 362 Pa*10⁸
Young module: 908 Pa*10⁸
Knoop hardness: 560
Abrasion: 165

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	85
100 ~ 300	100

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	0.6
-20 ~ 0	t	0.9
0 ~ 20	t	0.9
20 ~ 40	t	0.9
40 ~ 60	t	1
60 ~ 80	t	1.2
-40 ~ -20	C'	1.5
-20 ~ 0	C'	1.7
0 ~ 20	C'	1.8
20 ~ 40	C'	1.9
40 ~ 60	C'	2
60 ~ 80	C'	2.2
-40 ~ -20		1.6
-20 ~ 0		1.7
0 ~ 20		1.9
20 ~ 40		2
40 ~ 60		2.1
60 ~ 80		2.2
-40 ~ -20	D	1.9
-20 ~ 0	D	2.1
0 ~ 20	D	2.2
20 ~ 40	D	2.4
40 ~ 60	D	2.5
60 ~ 80	D	2.7
-40 ~ -20	e	2.3
-20 ~ 0	e	2.5
0 ~ 20	e	2.7
20 ~ 40	e	2.8
40 ~ 60	e	3
60 ~ 80	e	3.2
-40 ~ -20	F	3.4
-20 ~ 0	F	3.6
0 ~ 20	F	3.8
20 ~ 40	F	4.1
40 ~ 60	F	4.3
60 ~ 80	F	4.5
-40 ~ -20	g	4.6
-20 ~ 0	g	4.9
0 ~ 20	g	5.2
20 ~ 40	g	5.5
40 ~ 60	g	5.9
60 ~ 80	g	6.2