S-TIM25 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.672699 n_e = 1.677650	V_d = 32.09 V_e = 31.84	n_F - n_C = 0.020956 n_F' - n_C' = 0.021278	Coloring: 0.36 - 0.40 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 1.50659233 C2 = 0.204786135 C3 = 1.92036668 C4 = 0.0109501562 C5 = 0.0574980285 C6 = 178.128535

Refraction index
n _2.3254	-----
n _1.9701	1.635831
n _1.5296	1.642578
n _1.06	1.650775
n _t	1.651841
n _s	1.656562
n _r	1.663259
n _C	1.666606
n _C'	1.667559
n _0.6328	1.668455
n _D	1.672517
n _d	1.672699
n _e	1.677650
n _F	1.687563
n _F'	1.688838
n _g	1.700114
n _h	1.711258
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7045
P_C,A'	0.3154
P_d,C	0.2907
P_e,C	0.5269
P_g,d	1.3081
P_g,F	0.5988
P_h,g	0.5317
P_i,g	-----
P_C',t	0.7500
P_e,C'	0.4815
P_F',e	0.5338
P_i,F'	-----

transmittance: 10 mm
τ_0.36	0.01
τ_0.37	0.24
τ_0.38	0.6
τ_0.39	0.8
τ_0.4	0.89
τ_0.42	0.957
τ_0.44	0.974
τ_0.46	0.981
τ_0.48	0.986
τ_0.5	0.989
τ_0.55	0.995
τ_0.6	0.996
τ_0.65	0.995
τ_0.7	0.996
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.995
τ_1.6	0.995
τ_1.8	0.987
τ₂	0.977
τ_2.2	0.944
τ_2.4	0.93

Poisson coef.: 0.236
Rigidity: 340 Pa*10⁸
Young module: 841 Pa*10⁸
Knoop hardness: 570
Abrasion: 140

Climatic resistance: 2
Resistance to acids: 1
Phosphate resistance: 1.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	79
100 ~ 300	95

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.5
-20 ~ 0	t	1.7
0 ~ 20	t	1.7
20 ~ 40	t	1.7
40 ~ 60	t	1.8
60 ~ 80	t	1.9
-40 ~ -20	C'	2.2
-20 ~ 0	C'	2.4
0 ~ 20	C'	2.5
20 ~ 40	C'	2.6
40 ~ 60	C'	2.7
60 ~ 80	C'	2.8
-40 ~ -20		2.3
-20 ~ 0		2.4
0 ~ 20		2.5
20 ~ 40		2.7
40 ~ 60		2.8
60 ~ 80		2.9
-40 ~ -20	D	2.6
-20 ~ 0	D	2.7
0 ~ 20	D	2.8
20 ~ 40	D	2.9
40 ~ 60	D	3.1
60 ~ 80	D	3.3
-40 ~ -20	e	2.9
-20 ~ 0	e	3
0 ~ 20	e	3.2
20 ~ 40	e	3.4
40 ~ 60	e	3.6
60 ~ 80	e	3.7
-40 ~ -20	F	3.7
-20 ~ 0	F	3.9
0 ~ 20	F	4.1
20 ~ 40	F	4.4
40 ~ 60	F	4.6
60 ~ 80	F	4.8
-40 ~ -20	g	4.7
-20 ~ 0	g	5
0 ~ 20	g	5.2
20 ~ 40	g	5.5
40 ~ 60	g	5.8
60 ~ 80	g	6.1