S-TIH 4 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.755198 n_e = 1.761670	V_d = 27.51 V_e = 27.29	n_F - n_C = 0.027449 n_F' - n_C' = 0.027910	Coloring: 0.37 - 0.42 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 1.66755531 C2 = 0.294411865 C3 = 2.49422119 C4 = 0.0122052137 C5 = 0.0597775329 C6 = 214.869618

Refraction index
n _2.3254	-----
n _1.9701	1.710540
n _1.5296	1.717839
n _1.06	1.727342
n _t	1.728635
n _s	1.734483
n _r	1.742988
n _C	1.747295
n _C'	1.748525
n _0.6328	1.749684
n _D	1.754961
n _d	1.755198
n _e	1.761670
n _F	1.774744
n _F'	1.776435
n _g	1.791497
n _h	1.806555
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6797
P_C,A'	0.3086
P_d,C	0.2879
P_e,C	0.5237
P_g,d	1.3223
P_g,F	0.6103
P_h,g	0.5485
P_i,g	-----
P_C',t	0.7245
P_e,C'	0.4788
P_F',e	0.5379
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.12
τ_0.38	0.45
τ_0.39	0.7
τ_0.4	0.82
τ_0.42	0.929
τ_0.44	0.962
τ_0.46	0.973
τ_0.48	0.98
τ_0.5	0.986
τ_0.55	0.995
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	0.997
τ_1.4	0.995
τ_1.6	0.994
τ_1.8	0.987
τ₂	0.981
τ_2.2	0.961
τ_2.4	0.942

Poisson coef.: 0.254
Rigidity: 367 Pa*10⁸
Young module: 919 Pa*10⁸
Knoop hardness: 570
Abrasion: 168

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	0.5
-20 ~ 0	t	0.6
0 ~ 20	t	0.6
20 ~ 40	t	0.7
40 ~ 60	t	0.7
60 ~ 80	t	0.7
-40 ~ -20	C'	1.2
-20 ~ 0	C'	1.3
0 ~ 20	C'	1.4
20 ~ 40	C'	1.6
40 ~ 60	C'	1.7
60 ~ 80	C'	1.8
-40 ~ -20		1.2
-20 ~ 0		1.4
0 ~ 20		1.5
20 ~ 40		1.7
40 ~ 60		1.8
60 ~ 80		1.9
-40 ~ -20	D	1.6
-20 ~ 0	D	1.8
0 ~ 20	D	1.9
20 ~ 40	D	2.1
40 ~ 60	D	2.3
60 ~ 80	D	2.4
-40 ~ -20	e	2
-20 ~ 0	e	2.2
0 ~ 20	e	2.4
20 ~ 40	e	2.6
40 ~ 60	e	2.7
60 ~ 80	e	2.9
-40 ~ -20	F	3.1
-20 ~ 0	F	3.3
0 ~ 20	F	3.6
20 ~ 40	F	3.9
40 ~ 60	F	4.1
60 ~ 80	F	4.4
-40 ~ -20	g	4.4
-20 ~ 0	g	4.7
0 ~ 20	g	5.1
20 ~ 40	g	5.4
40 ~ 60	g	5.8
60 ~ 80	g	6.1